Core/Protect-WindowsSecurity.psm1
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#Requires -Version 7.4 #Requires -PSEdition Core # Applies the style to the Protect-WindowsSecurity when running as script straight from the GitHub, as well as all of the cmdlets of the Harden Windows Security module $PSStyle.Progress.UseOSCIndicator = $true Function Protect-WindowsSecurity { [CmdletBinding(DefaultParameterSetName = 'Online Mode')] [OutputType([System.String])] param ( [parameter(Mandatory = $false, ParameterSetName = 'Online Mode')] [parameter(Mandatory = $false, ParameterSetName = 'Offline Mode')] [ArgumentCompleter({ # Get the current command and the already bound parameters param($CommandName, $ParameterName, $WordToComplete, $CommandAst, $FakeBoundParameters) # Find all string constants in the AST $Existing = $CommandAst.FindAll( # The predicate scriptblock to define the criteria for filtering the AST nodes { $args[0] -is [System.Management.Automation.Language.StringConstantExpressionAst] }, # The recurse flag, whether to search nested scriptblocks or not. $false ).Value [Categoriex]::new().GetValidValues() | ForEach-Object -Process { # Check if the item is already selected if ($_ -notin $Existing) { # Return the item $_ } } })] [ValidateScript({ if ($_ -notin [Categoriex]::new().GetValidValues()) { throw "Invalid Category Name: $_" } # Return true if everything is okay $true })] [System.String[]]$Categories, [parameter(Mandatory = $false, ParameterSetName = 'Online Mode')] [parameter(Mandatory = $false, ParameterSetName = 'Offline Mode')] [System.Management.Automation.SwitchParameter]$Log, [parameter(Mandatory = $false, ParameterSetName = 'Offline Mode')] [System.Management.Automation.SwitchParameter]$Offline ) # This offers granular control over sub-category automation, handles the parameter validation and correlation between selected categories and the subcategory switch parameter, doesn't populate the argument completer on the console with unrelated parameters DynamicParam { # Create a new dynamic parameter dictionary $ParamDictionary = [System.Management.Automation.RuntimeDefinedParameterDictionary]::new() # A script block to create and add dynamic parameters to the dictionary for the sub-categories [System.Management.Automation.ScriptBlock]$DynParamCreatorSubCategories = { param([System.String]$Name) # Create a parameter attribute to add the ParameterSet for 'Online Mode' $ParamAttrib1 = [System.Management.Automation.ParameterAttribute]@{ Mandatory = $false ParameterSetName = 'Online Mode' } # Create a parameter attribute to add the ParameterSet for 'Offline Mode' $ParamAttrib2 = [System.Management.Automation.ParameterAttribute]@{ Mandatory = $false ParameterSetName = 'Offline Mode' } # Add the dynamic parameter to the param dictionary $ParamDictionary.Add($Name, [System.Management.Automation.RuntimeDefinedParameter]::new( # Define parameter name $Name, # Define parameter type [System.Management.Automation.SwitchParameter], # Add both attributes to the parameter [System.Management.Automation.ParameterAttribute[]]@($ParamAttrib1, $ParamAttrib2) )) } if ('MicrosoftSecurityBaselines' -in $PSBoundParameters['Categories']) { # Create a dynamic parameter for -SecBaselines_NoOverrides Invoke-Command -ScriptBlock $DynParamCreatorSubCategories -ArgumentList 'SecBaselines_NoOverrides' } if ('MicrosoftDefender' -in $PSBoundParameters['Categories']) { # Create a dynamic parameter for -MSFTDefender_SAC Invoke-Command -ScriptBlock $DynParamCreatorSubCategories -ArgumentList 'MSFTDefender_SAC' # Create a dynamic parameter for -MSFTDefender_NoDiagData Invoke-Command -ScriptBlock $DynParamCreatorSubCategories -ArgumentList 'MSFTDefender_NoDiagData' # Create a dynamic parameter for -MSFTDefender_NoScheduledTask Invoke-Command -ScriptBlock $DynParamCreatorSubCategories -ArgumentList 'MSFTDefender_NoScheduledTask' # Create a dynamic parameter for -MSFTDefender_BetaChannels Invoke-Command -ScriptBlock $DynParamCreatorSubCategories -ArgumentList 'MSFTDefender_BetaChannels' } if ('LockScreen' -in $PSBoundParameters['Categories']) { # Create a dynamic parameter for -LockScreen_NoLastSignedIn Invoke-Command -ScriptBlock $DynParamCreatorSubCategories -ArgumentList 'LockScreen_NoLastSignedIn' # Create a dynamic parameter for -LockScreen_CtrlAltDel Invoke-Command -ScriptBlock $DynParamCreatorSubCategories -ArgumentList 'LockScreen_CtrlAltDel' } if ('UserAccountControl' -in $PSBoundParameters['Categories']) { # Create a dynamic parameter for -UAC_NoFastSwitching Invoke-Command -ScriptBlock $DynParamCreatorSubCategories -ArgumentList 'UAC_NoFastSwitching' # Create a dynamic parameter for -UAC_OnlyElevateSigned Invoke-Command -ScriptBlock $DynParamCreatorSubCategories -ArgumentList 'UAC_OnlyElevateSigned' } if ('CountryIPBlocking' -in $PSBoundParameters['Categories']) { # Create a dynamic parameter for -CountryIPBlocking_OFAC Invoke-Command -ScriptBlock $DynParamCreatorSubCategories -ArgumentList 'CountryIPBlocking_OFAC' } # Creating dynamic parameters for the offline mode files if ($PSBoundParameters.Offline.IsPresent) { # Opens File picker GUI so that user can select an .zip file [System.Management.Automation.ScriptBlock]$ArgumentCompleterZipFilePathsPicker = { # Load the System.Windows.Forms assembly Add-Type -AssemblyName 'System.Windows.Forms' # Create a new OpenFileDialog object [System.Windows.Forms.OpenFileDialog]$Dialog = New-Object -TypeName 'System.Windows.Forms.OpenFileDialog' # Set the filter to show only zip files $Dialog.Filter = 'Zip files (*.zip)|*.zip' # Show the dialog and get the result [System.String]$Result = $Dialog.ShowDialog() # If the user clicked OK, return the selected file path if ($Result -eq 'OK') { return "`'$($Dialog.FileName)`'" } } #Region-Dyn-Param-For-PathToLGPO # Create a parameter attribute collection $PathToLGPO_AttributesCollection = New-Object -TypeName System.Collections.ObjectModel.Collection[System.Attribute] # Create a mandatory attribute and add it to the collection [System.Management.Automation.ParameterAttribute]$PathToLGPO_MandatoryAttrib = New-Object -TypeName System.Management.Automation.ParameterAttribute $PathToLGPO_MandatoryAttrib.Mandatory = $true $PathToLGPO_AttributesCollection.Add($PathToLGPO_MandatoryAttrib) [System.Management.Automation.ParameterAttribute]$PathToLGPO_ParamSetAttribute = New-Object -TypeName System.Management.Automation.ParameterAttribute $PathToLGPO_ParamSetAttribute.ParameterSetName = 'Offline Mode' $PathToLGPO_AttributesCollection.Add($PathToLGPO_ParamSetAttribute) # Create a validate script attribute and add it to the collection [System.Management.Automation.ValidateScriptAttribute]$PathToLGPO_ValidateScriptAttrib = New-Object -TypeName System.Management.Automation.ValidateScriptAttribute( { try { # Load the System.IO.Compression assembly [System.Reflection.Assembly]::LoadWithPartialName('System.IO.Compression.FileSystem') | Out-Null # Open the zip file in read mode [System.IO.Compression.ZipArchive]$ZipArchive = [IO.Compression.ZipFile]::OpenRead("$_") # Make sure the selected zip has the required file if (-NOT ($ZipArchive.Entries | Where-Object -FilterScript { $_.FullName -like 'LGPO_*/LGPO.exe' })) { Throw 'The selected Zip file does not contain the LGPO.exe which is required for the Protect-WindowsSecurity function to work properly' } } finally { # Close the handle whether the zip file is valid or not $ZipArchive.Dispose() } # Return true if everything is okay $true }) # Add the validate script attribute to the collection $PathToLGPO_AttributesCollection.Add($PathToLGPO_ValidateScriptAttrib) # Create an argument completer attribute and add it to the collection [System.Management.Automation.ArgumentCompleterAttribute]$PathToLGPO_ArgumentCompleterAttrib = New-Object -TypeName System.Management.Automation.ArgumentCompleterAttribute($ArgumentCompleterZipFilePathsPicker) $PathToLGPO_AttributesCollection.Add($PathToLGPO_ArgumentCompleterAttrib) # Create a dynamic parameter object with the attributes already assigned: Name, Type, and Attributes Collection [System.Management.Automation.RuntimeDefinedParameter]$PathToLGPO = New-Object -TypeName System.Management.Automation.RuntimeDefinedParameter('PathToLGPO', [System.IO.FileInfo], $PathToLGPO_AttributesCollection) # Add the dynamic parameter object to the dictionary $ParamDictionary.Add('PathToLGPO', $PathToLGPO) #Endregion-Dyn-Param-For-PathToLGPO #Region-Dyn-Param-For-PathToMSFT365AppsSecurityBaselines # Create a parameter attribute collection $PathToMSFT365AppsSecurityBaselines_AttributesCollection = New-Object -TypeName System.Collections.ObjectModel.Collection[System.Attribute] # Create a mandatory attribute and add it to the collection [System.Management.Automation.ParameterAttribute]$PathToMSFT365AppsSecurityBaselines_MandatoryAttrib = New-Object -TypeName System.Management.Automation.ParameterAttribute $PathToMSFT365AppsSecurityBaselines_MandatoryAttrib.Mandatory = $true $PathToMSFT365AppsSecurityBaselines_AttributesCollection.Add($PathToMSFT365AppsSecurityBaselines_MandatoryAttrib) [System.Management.Automation.ParameterAttribute]$PathToMSFT365AppsSecurityBaselinesParamSetAttribute = New-Object -TypeName System.Management.Automation.ParameterAttribute $PathToMSFT365AppsSecurityBaselinesParamSetAttribute.ParameterSetName = 'Offline Mode' $PathToMSFT365AppsSecurityBaselines_AttributesCollection.Add($PathToMSFT365AppsSecurityBaselinesParamSetAttribute) # Create a validate script attribute and add it to the collection [System.Management.Automation.ValidateScriptAttribute]$PathToMSFT365AppsSecurityBaselines_ValidateScriptAttrib = New-Object -TypeName System.Management.Automation.ValidateScriptAttribute( { try { # Load the System.IO.Compression assembly [System.Reflection.Assembly]::LoadWithPartialName('System.IO.Compression.FileSystem') | Out-Null # Open the zip file in read mode [System.IO.Compression.ZipArchive]$ZipArchive = [IO.Compression.ZipFile]::OpenRead("$_") # Make sure the selected zip has the required file if (-NOT ($ZipArchive.Entries | Where-Object -FilterScript { $_.FullName -like 'Microsoft 365 Apps for Enterprise*/Scripts/Baseline-LocalInstall.ps1' })) { Throw 'The selected Zip file does not contain the Microsoft 365 Apps for Enterprise Security Baselines Baseline-LocalInstall.ps1 which is required for the Protect-WindowsSecurity function to work properly' } } finally { # Close the handle whether the zip file is valid or not $ZipArchive.Dispose() } # Return true if everything is okay $true }) # Add the validate script attribute to the collection $PathToMSFT365AppsSecurityBaselines_AttributesCollection.Add($PathToMSFT365AppsSecurityBaselines_ValidateScriptAttrib) # Create an argument completer attribute and add it to the collection [System.Management.Automation.ArgumentCompleterAttribute]$PathToMSFT365AppsSecurityBaselines_ArgumentCompleterAttrib = New-Object -TypeName System.Management.Automation.ArgumentCompleterAttribute($ArgumentCompleterZipFilePathsPicker) $PathToMSFT365AppsSecurityBaselines_AttributesCollection.Add($PathToMSFT365AppsSecurityBaselines_ArgumentCompleterAttrib) # Create a dynamic parameter object with the attributes already assigned: Name, Type, and Attributes Collection [System.Management.Automation.RuntimeDefinedParameter]$PathToMSFT365AppsSecurityBaselines = New-Object -TypeName System.Management.Automation.RuntimeDefinedParameter('PathToMSFT365AppsSecurityBaselines', [System.IO.FileInfo], $PathToMSFT365AppsSecurityBaselines_AttributesCollection) # Add the dynamic parameter object to the dictionary $ParamDictionary.Add('PathToMSFT365AppsSecurityBaselines', $PathToMSFT365AppsSecurityBaselines) #Endregion-Dyn-Param-For-PathToMSFT365AppsSecurityBaselines #Region-Dyn-Param-For-PathToMSFTSecurityBaselines # Create a parameter attribute collection $PathToMSFTSecurityBaselines_AttributesCollection = New-Object -TypeName System.Collections.ObjectModel.Collection[System.Attribute] # Create a mandatory attribute and add it to the collection [System.Management.Automation.ParameterAttribute]$PathToMSFTSecurityBaselines_MandatoryAttrib = New-Object -TypeName System.Management.Automation.ParameterAttribute $PathToMSFTSecurityBaselines_MandatoryAttrib.Mandatory = $true $PathToMSFTSecurityBaselines_AttributesCollection.Add($PathToMSFTSecurityBaselines_MandatoryAttrib) [System.Management.Automation.ParameterAttribute]$PathToMSFTSecurityBaselines_ParamSetAttribute = New-Object -TypeName System.Management.Automation.ParameterAttribute $PathToMSFTSecurityBaselines_ParamSetAttribute.ParameterSetName = 'Offline Mode' $PathToMSFTSecurityBaselines_AttributesCollection.Add($PathToMSFTSecurityBaselines_ParamSetAttribute) # Create a validate script attribute and add it to the collection [System.Management.Automation.ValidateScriptAttribute]$PathToMSFTSecurityBaselines_ValidateScriptAttrib = New-Object -TypeName System.Management.Automation.ValidateScriptAttribute( { try { # Load the System.IO.Compression assembly [System.Reflection.Assembly]::LoadWithPartialName('System.IO.Compression.FileSystem') | Out-Null # Open the zip file in read mode [System.IO.Compression.ZipArchive]$ZipArchive = [IO.Compression.ZipFile]::OpenRead("$_") # Make sure the selected zip has the required file if (-NOT ($ZipArchive.Entries | Where-Object -FilterScript { $_.FullName -like 'Windows*Security Baseline/Scripts/Baseline-LocalInstall.ps1' })) { Throw 'The selected Zip file does not contain the Microsoft Security Baselines Baseline-LocalInstall.ps1 which is required for the Protect-WindowsSecurity function to work properly' } } finally { # Close the handle whether the zip file is valid or not $ZipArchive.Dispose() } # Return true if everything is okay $true }) # Add the validate script attribute to the collection $PathToMSFTSecurityBaselines_AttributesCollection.Add($PathToMSFTSecurityBaselines_ValidateScriptAttrib) # Create an argument completer attribute and add it to the collection [System.Management.Automation.ArgumentCompleterAttribute]$PathToMSFTSecurityBaselines_ArgumentCompleterAttrib = New-Object -TypeName System.Management.Automation.ArgumentCompleterAttribute($ArgumentCompleterZipFilePathsPicker) $PathToMSFTSecurityBaselines_AttributesCollection.Add($PathToMSFTSecurityBaselines_ArgumentCompleterAttrib) # Create a dynamic parameter object with the attributes already assigned: Name, Type, and Attributes Collection [System.Management.Automation.RuntimeDefinedParameter]$PathToMSFTSecurityBaselines = New-Object -TypeName System.Management.Automation.RuntimeDefinedParameter('PathToMSFTSecurityBaselines', [System.IO.FileInfo], $PathToMSFTSecurityBaselines_AttributesCollection) # Add the dynamic parameter object to the dictionary $ParamDictionary.Add('PathToMSFTSecurityBaselines', $PathToMSFTSecurityBaselines) #Endregion-Dyn-Param-For-PathToMSFTSecurityBaselines } # Creating dynamic parameters for the LogPath if ($PSBoundParameters.Log.IsPresent) { # Create a parameter attribute to add the ParameterSet for 'Online Mode' $LogPath_ParamAttrib1 = [System.Management.Automation.ParameterAttribute]@{ Mandatory = $false ParameterSetName = 'Online Mode' } # Create a parameter attribute to add the ParameterSet for 'Offline Mode' $LogPath_ParamAttrib2 = [System.Management.Automation.ParameterAttribute]@{ Mandatory = $false ParameterSetName = 'Offline Mode' } # Add the dynamic parameter to the param dictionary $ParamDictionary.Add('LogPath', [System.Management.Automation.RuntimeDefinedParameter]::new( # Define parameter name 'LogPath', # Define parameter type [System.IO.FileInfo], # Add both attributes to the parameter [System.Management.Automation.ParameterAttribute[]]@($LogPath_ParamAttrib1, $LogPath_ParamAttrib2) )) } return $ParamDictionary } begin { # This class provides a list of valid values for the Categories parameter of the Protect-WindowsSecurity function Class Categoriex : System.Management.Automation.IValidateSetValuesGenerator { [System.String[]] GetValidValues() { $Categoriex = @( 'WindowsBootManagerRevocations', 'MicrosoftSecurityBaselines', 'Microsoft365AppsSecurityBaselines', 'MicrosoftDefender', 'AttackSurfaceReductionRules', 'BitLockerSettings', 'TLSSecurity', 'LockScreen', 'UserAccountControl', 'WindowsFirewall', 'OptionalWindowsFeatures', 'WindowsNetworking', 'MiscellaneousConfigurations', 'WindowsUpdateConfigurations', 'EdgeBrowserConfigurations', 'CertificateCheckingCommands', 'CountryIPBlocking', 'DownloadsDefenseMeasures', 'NonAdminCommands' ) return [System.String[]]$Categoriex } } # Since Dynamic parameters are only available in the parameter dictionary, we have to access them using $PSBoundParameters or assign them manually to another variable in the function's scope New-Variable -Name 'SecBaselines_NoOverrides' -Value $($PSBoundParameters['SecBaselines_NoOverrides']) -Force New-Variable -Name 'MSFTDefender_SAC' -Value $($PSBoundParameters['MSFTDefender_SAC']) -Force New-Variable -Name 'MSFTDefender_NoDiagData' -Value $($PSBoundParameters['MSFTDefender_NoDiagData']) -Force New-Variable -Name 'MSFTDefender_NoScheduledTask' -Value $($PSBoundParameters['MSFTDefender_NoScheduledTask']) -Force New-Variable -Name 'MSFTDefender_BetaChannels' -Value $($PSBoundParameters['MSFTDefender_BetaChannels']) -Force New-Variable -Name 'LockScreen_CtrlAltDel' -Value $($PSBoundParameters['LockScreen_CtrlAltDel']) -Force New-Variable -Name 'LockScreen_NoLastSignedIn' -Value $($PSBoundParameters['LockScreen_NoLastSignedIn']) -Force New-Variable -Name 'UAC_NoFastSwitching' -Value $($PSBoundParameters['UAC_NoFastSwitching']) -Force New-Variable -Name 'UAC_OnlyElevateSigned' -Value $($PSBoundParameters['UAC_OnlyElevateSigned']) -Force New-Variable -Name 'CountryIPBlocking_OFAC' -Value $($PSBoundParameters['CountryIPBlocking_OFAC']) -Force New-Variable -Name 'PathToLGPO' -Value $($PSBoundParameters['PathToLGPO']) -Force New-Variable -Name 'PathToMSFT365AppsSecurityBaselines' -Value $($PSBoundParameters['PathToMSFT365AppsSecurityBaselines']) -Force New-Variable -Name 'PathToMSFTSecurityBaselines' -Value $($PSBoundParameters['PathToMSFTSecurityBaselines']) -Force # Set the default value for LogPath to the current working directory if not specified New-Variable -Name 'LogPath' -Value $($PSBoundParameters['LogPath'] ?? (Join-Path -Path $(Get-Location).Path -ChildPath "Log-Protect-WindowsSecurity-$(Get-Date -Format 'yyyy-MM-dd HH-mm-ss').txt")) -Force # Detecting if Verbose switch is used $PSBoundParameters.Verbose.IsPresent ? ([System.Boolean]$Verbose = $true) : ([System.Boolean]$Verbose = $false) | Out-Null $ErrorActionPreference = 'Stop' $PSDefaultParameterValues = @{ 'Invoke-WebRequest:HttpVersion' = '3.0' 'Invoke-WebRequest:SslProtocol' = 'Tls12,Tls13' 'Invoke-RestMethod:HttpVersion' = '3.0' 'Invoke-RestMethod:SslProtocol' = 'Tls12,Tls13' 'Invoke-WebRequest:ProgressAction' = 'SilentlyContinue' 'Invoke-RestMethod:ProgressAction' = 'SilentlyContinue' 'Get-BitLockerVolume:ErrorAction' = 'SilentlyContinue' 'Get-CimInstance:Verbose' = $false 'Import-Module:Verbose' = $false 'Copy-Item:Force' = $true 'Copy-Item:ProgressAction' = 'SilentlyContinue' 'Test-Path:ErrorAction' = 'SilentlyContinue' } } process { # Determining whether to use the files inside the module or download them from the GitHub repository [System.Boolean]$IsLocally = $false # Test for $null or '' or all-whitespace or any stringified value being '' if (-NOT [System.String]::IsNullOrWhitespace($PSCommandPath)) { try { # Get the name of the file that called the function [System.String]$PSCommandPathToProcess = Split-Path -Path $PSCommandPath -Leaf } catch {} if ($PSCommandPathToProcess -eq 'Protect-WindowsSecurity.psm1') { Write-Verbose -Message 'Running Protect-WindowsSecurity function as part of the Harden-Windows-Security module' Write-Verbose -Message 'Importing the required sub-modules' Import-Module -FullyQualifiedName "$HardeningModulePath\Shared\Update-self.psm1" -Force -Verbose:$false # Set the flag to true to indicate that the module is running locally $IsLocally = $true if (!$Offline) { Write-Verbose -Message 'Checking for updates...' Update-Self -InvocationStatement $MyInvocation.Statement } else { Write-Verbose -Message 'Skipping update check since the -Offline switch was used' } } } else { Write-Verbose -Message '$PSCommandPath was not found, Protect-WindowsSecurity function was most likely called from the GitHub repository' } # Start the transcript if the -Log switch is used if ($Log) { Start-Transcript -IncludeInvocationHeader -Path $LogPath # Create a new stopwatch object to measure the execution time Write-Verbose -Message 'Starting the stopwatch...' [System.Diagnostics.Stopwatch]$StopWatch = [Diagnostics.Stopwatch]::StartNew() } # Determine whether the current session is running as Administrator or not [System.Security.Principal.WindowsIdentity]$Identity = [Security.Principal.WindowsIdentity]::GetCurrent() [System.Security.Principal.WindowsPrincipal]$Principal = New-Object -TypeName 'Security.Principal.WindowsPrincipal' -ArgumentList $Identity [System.Boolean]$IsAdmin = $Principal.IsInRole([Security.Principal.WindowsBuiltinRole]::Administrator) ? $True : $false # Get the execution policy for the current process [System.String]$CurrentExecutionPolicy = Get-ExecutionPolicy -Scope 'Process' # Change the execution policy temporarily only for the current PowerShell session Set-ExecutionPolicy -ExecutionPolicy 'Unrestricted' -Scope 'Process' -Force # Get the current title of the PowerShell [System.String]$CurrentPowerShellTitle = $Host.UI.RawUI.WindowTitle # Change the title of the Windows Terminal for PowerShell tab $Host.UI.RawUI.WindowTitle = '❤️🔥Harden Windows Security❤️🔥' # Minimum OS build number required for the hardening measures [System.Decimal]$Requiredbuild = '22621.3155' # Fetching Temp Directory [System.String]$CurrentUserTempDirectoryPath = [System.IO.Path]::GetTempPath() # The total number of the main categories for the parent/main progress bar to render [System.Int32]$TotalMainSteps = 19 # Defining a boolean variable to determine whether optional diagnostic data should be enabled for Smart App Control or not [System.Boolean]$ShouldEnableOptionalDiagnosticData = $false #region Helper-Functions function Select-Option { <# .synopsis Function to show a prompt to the user to select an option from a list of options .INPUTS System.String System.Management.Automation.SwitchParameter .OUTPUTS System.String .PARAMETER Message Contains the main prompt message .PARAMETER ExtraMessage Contains any extra notes for sub-categories #> [CmdletBinding()] param( [parameter(Mandatory = $True)][System.String]$Message, [parameter(Mandatory = $True)][System.String[]]$Options, [parameter(Mandatory = $false)][System.Management.Automation.SwitchParameter]$SubCategory, [parameter(Mandatory = $false)][System.String]$ExtraMessage ) $Selected = $null while ($null -eq $Selected) { # Use this style if showing main categories only if (!$SubCategory) { Write-ColorfulText -C Fuchsia -I $Message } # Use this style if showing sub-categories only that need additional confirmation else { # Show sub-category's main prompt Write-ColorfulText -C Orange -I $Message # Show sub-category's notes/extra message if any if ($ExtraMessage) { Write-ColorfulText -C PinkBoldBlink -I $ExtraMessage } } for ($I = 0; $I -lt $Options.Length; $I++) { Write-ColorfulText -C MintGreen -I "$($I+1): $($Options[$I])" } # Make sure user only inputs a positive integer [System.Int64]$SelectedIndex = 0 $IsValid = [System.Int64]::TryParse((Read-Host -Prompt 'Select an option'), [ref]$SelectedIndex) if ($IsValid) { if ($SelectedIndex -gt 0 -and $SelectedIndex -le $Options.Length) { $Selected = $Options[$SelectedIndex - 1] } else { Write-Warning -Message 'Invalid Option.' } } else { Write-Warning -Message 'Invalid input. Please only enter a positive number.' } } # Add verbose output, helpful when reviewing the log file Write-Verbose -Message "Selected: $Selected" return [System.String]$Selected } function Edit-Registry { <# .SYNOPSIS Function to modify registry .INPUTS System.String .OUTPUTS System.Void #> [CmdletBinding()] param ([System.String]$Path, [System.String]$Key, [System.String]$Value, [System.String]$Type, [System.String]$Action) If (-NOT (Test-Path -Path $Path)) { New-Item -Path $Path -Force | Out-Null } if ($Action -eq 'AddOrModify') { New-ItemProperty -Path $Path -Name $Key -Value $Value -PropertyType $Type -Force | Out-Null } elseif ($Action -eq 'Delete') { Remove-ItemProperty -Path $Path -Name $Key -Force -ErrorAction SilentlyContinue | Out-Null } } function Compare-SecureString { <# .SYNOPSIS Safely compares two SecureString objects without decrypting them. Outputs $true if they are equal, or $false otherwise. .LINK https://stackoverflow.com/questions/48809012/compare-two-credentials-in-powershell .INPUTS System.Security.SecureString .OUTPUTS System.Boolean .PARAMETER SecureString1 First secure string .PARAMETER SecureString2 Second secure string to compare with the first secure string #> [CmdletBinding()] param( [System.Security.SecureString]$SecureString1, [System.Security.SecureString]$SecureString2 ) try { $Bstr1 = [Runtime.InteropServices.Marshal]::SecureStringToBSTR($SecureString1) $Bstr2 = [Runtime.InteropServices.Marshal]::SecureStringToBSTR($SecureString2) $Length1 = [Runtime.InteropServices.Marshal]::ReadInt32($Bstr1, -4) $Length2 = [Runtime.InteropServices.Marshal]::ReadInt32($Bstr2, -4) if ( $Length1 -ne $Length2 ) { return $false } for ( $I = 0; $I -lt $Length1; ++$I ) { $B1 = [Runtime.InteropServices.Marshal]::ReadByte($Bstr1, $I) $B2 = [Runtime.InteropServices.Marshal]::ReadByte($Bstr2, $I) if ( $B1 -ne $B2 ) { return $false } } return $true } finally { if ( $Bstr1 -ne [IntPtr]::Zero ) { [Runtime.InteropServices.Marshal]::ZeroFreeBSTR($Bstr1) } if ( $Bstr2 -ne [IntPtr]::Zero ) { [Runtime.InteropServices.Marshal]::ZeroFreeBSTR($Bstr2) } } } Function Write-ColorfulText { <# .SYNOPSIS Function to write colorful text to the console .INPUTS System.String System.Management.Automation.SwitchParameter .OUTPUTS System.String .PARAMETER Color The color to use to display the text, uses PSStyle .PARAMETER InputText The text to display in the selected color #> [CmdletBinding()] param ( [Parameter(Mandatory = $True)] [Alias('C')] [ValidateSet('Fuchsia', 'Orange', 'NeonGreen', 'MintGreen', 'PinkBoldBlink', 'PinkBold', 'Rainbow' , 'Gold', 'TeaGreenNoNewLine', 'LavenderNoNewLine', 'PinkNoNewLine', 'VioletNoNewLine', 'Violet', 'Pink', 'Lavender')] [System.String]$Color, [parameter(Mandatory = $True)] [Alias('I')] [System.String]$InputText ) switch ($Color) { 'Fuchsia' { Write-Host -Object "$($PSStyle.Foreground.FromRGB(236,68,155))$InputText$($PSStyle.Reset)"; break } 'Orange' { Write-Host -Object "$($PSStyle.Foreground.FromRGB(255,165,0))$InputText$($PSStyle.Reset)"; break } 'NeonGreen' { Write-Host -Object "$($PSStyle.Foreground.FromRGB(153,244,67))$InputText$($PSStyle.Reset)"; break } 'MintGreen' { Write-Host -Object "$($PSStyle.Foreground.FromRGB(152,255,152))$InputText$($PSStyle.Reset)"; break } 'PinkBoldBlink' { Write-Host -Object "$($PSStyle.Foreground.FromRgb(255,192,203))$($PSStyle.Bold)$($PSStyle.Blink)$InputText$($PSStyle.Reset)"; break } 'PinkBold' { Write-Host -Object "$($PSStyle.Foreground.FromRgb(255,192,203))$($PSStyle.Bold)$($PSStyle.Reverse)$InputText$($PSStyle.Reset)"; break } 'Gold' { Write-Host -Object "$($PSStyle.Foreground.FromRgb(255,215,0))$InputText$($PSStyle.Reset)"; break } 'VioletNoNewLine' { Write-Host -Object "$($PSStyle.Foreground.FromRGB(153,0,255))$InputText$($PSStyle.Reset)" -NoNewline; break } 'PinkNoNewLine' { Write-Host -Object "$($PSStyle.Foreground.FromRGB(255,0,230))$InputText$($PSStyle.Reset)" -NoNewline; break } 'Violet' { Write-Host -Object "$($PSStyle.Foreground.FromRGB(153,0,255))$InputText$($PSStyle.Reset)"; break } 'Pink' { Write-Host -Object "$($PSStyle.Foreground.FromRGB(255,0,230))$InputText$($PSStyle.Reset)"; break } 'LavenderNoNewLine' { Write-Host -Object "$($PSStyle.Foreground.FromRgb(255,179,255))$InputText$($PSStyle.Reset)" -NoNewline; break } 'Lavender' { Write-Host -Object "$($PSStyle.Foreground.FromRgb(255,179,255))$InputText$($PSStyle.Reset)"; break } 'TeaGreenNoNewLine' { Write-Host -Object "$($PSStyle.Foreground.FromRgb(133, 222, 119))$InputText$($PSStyle.Reset)" -NoNewline; break } 'Rainbow' { [System.Drawing.Color[]]$RainbowColors = @( [System.Drawing.Color]::Pink, [System.Drawing.Color]::HotPink, [System.Drawing.Color]::SkyBlue, [System.Drawing.Color]::HotPink, [System.Drawing.Color]::SkyBlue, [System.Drawing.Color]::LightSkyBlue, [System.Drawing.Color]::LightGreen, [System.Drawing.Color]::Coral, [System.Drawing.Color]::Plum, [System.Drawing.Color]::Gold ) [System.String]$Output = '' for ($I = 0; $I -lt $InputText.Length; $I++) { $CurrentColor = $RainbowColors[$I % $RainbowColors.Length] $Output += "$($PSStyle.Foreground.FromRGB($CurrentColor.R, $CurrentColor.G, $CurrentColor.B))$($PSStyle.Blink)$($InputText[$I])$($PSStyle.BlinkOff)$($PSStyle.Reset)" } Write-Output -InputObject $Output break } Default { Throw 'Unspecified Color' } } } function Get-AvailableRemovableDrives { <# .SYNOPSIS Function to get a removable drive to be used by BitLocker category .INPUTS None. You cannot pipe objects to this function .OUTPUTS System.String #> # An empty array of objects that holds the final removable drives list [System.Object[]]$AvailableRemovableDrives = @() Get-Volume | Where-Object -FilterScript { $_.DriveLetter -and $_.DriveType -eq 'Removable' } | ForEach-Object -Process { # Prepare to create an extremely random file name [System.String]$Path = "$($_.DriveLetter + ':')\$(New-Guid).$(Get-Random -Maximum 400)" try { # Create a test file on the drive to make sure it's not write-protected New-Item -Path $Path -ItemType File -Value 'test' -Force | Out-Null # If the drive wasn't write-protected then delete the test file Remove-Item -Path $Path -Force # Add the drive to the list only if it's writable $AvailableRemovableDrives += $_ } catch { # Drive is write protected, do nothing } } # If there is any Writable removable drives, sort and prepare them and then add them to the array if ($AvailableRemovableDrives) { $AvailableRemovableDrives = $AvailableRemovableDrives | Sort-Object -Property DriveLetter | Select-Object -Property DriveLetter, FileSystemType, DriveType, @{Name = 'Size'; Expression = { '{0:N2}' -f ($_.Size / 1GB) + ' GB' } } } if (!$AvailableRemovableDrives) { do { switch (Select-Option -Options 'Check for removable flash drives again', 'Skip encryptions altogether', 'Exit' -Message "`nNo removable writable flash drives found. Please insert a USB flash drive. If it's already attached to the system, try ejecting it and inserting it back in.") { 'Check for removable flash drives again' { # An empty array of objects that holds the final removable drives list [System.Object[]]$AvailableRemovableDrives = @() Get-Volume | Where-Object -FilterScript { $_.DriveLetter -and $_.DriveType -eq 'Removable' } | ForEach-Object -Process { # Prepare to create an extremely random file name [System.String]$ExtremelyRandomPath = "$($_.DriveLetter + ':')\$(New-Guid).$(Get-Random -Maximum 400)" try { # Create a test file on the drive to make sure it's not write-protected New-Item -Path $ExtremelyRandomPath -ItemType File -Value 'test' -Force | Out-Null # If the drive wasn't write-protected then delete the test file Remove-Item -Path $ExtremelyRandomPath -Force # Add the drive to the list only if it's writable $AvailableRemovableDrives += $_ } catch { # Drive is write protected, do nothing } } # If there is any Writable removable drives, sort and prepare them and then add them to the array if ($AvailableRemovableDrives) { $AvailableRemovableDrives = $AvailableRemovableDrives | Sort-Object -Property DriveLetter | Select-Object -Property DriveLetter, FileSystemType, DriveType, @{Name = 'Size'; Expression = { '{0:N2}' -f ($_.Size / 1GB) + ' GB' } } } } 'Skip encryptions altogether' { break BitLockerCategoryLabel } # Breaks from the BitLocker category and won't process Non-OS Drives 'Exit' { break MainSwitchLabel } } } until ($AvailableRemovableDrives) } # Initialize the maximum length variables but make sure the column widths are at least as wide as their titles such as 'DriveLetter' or 'FileSystemType' etc. [System.Int64]$DriveLetterLength = 10 [System.Int64]$FileSystemTypeLength = 13 [System.Int64]$DriveTypeLength = 8 [System.Int64]$SizeLength = 3 # Loop through each element in the array foreach ($Drive in $AvailableRemovableDrives) { # Compare the length of the current element with the maximum length and update if needed if ($Drive.DriveLetter.Length -gt $DriveLetterLength) { $DriveLetterLength = $Drive.DriveLetter.Length } if ($Drive.FileSystemType.Length -gt $FileSystemTypeLength) { $FileSystemTypeLength = $Drive.FileSystemType.Length } if ($Drive.DriveType.Length -gt $DriveTypeLength) { $DriveTypeLength = $Drive.DriveType.Length } if (($Drive.Size | Measure-Object -Character).Characters -gt $SizeLength) { # The method below is used to calculate size of the string that consists only number, but since it now has "GB" in it, it's no longer needed # $SizeLength = ($Drive.Size | Measure-Object -Character).Characters $SizeLength = $Drive.Size.Length } } # Add 3 to each maximum length for spacing $DriveLetterLength += 3 $FileSystemTypeLength += 3 $DriveTypeLength += 3 $SizeLength += 3 # Creating a heading for the columns # Write the index of the drive Write-ColorfulText -C LavenderNoNewLine -I ('{0,-4}' -f '#') # Write the name of the drive Write-ColorfulText -C TeaGreenNoNewLine -I ("|{0,-$DriveLetterLength}" -f 'DriveLetter') # Write the File System Type of the drive Write-ColorfulText -C PinkNoNewLine -I ("|{0,-$FileSystemTypeLength}" -f 'FileSystemType') # Write the Drive Type of the drive Write-ColorfulText -C VioletNoNewLine -I ("|{0,-$DriveTypeLength}" -f 'DriveType') # Write the Size of the drive Write-ColorfulText -C Gold ("|{0,-$SizeLength}" -f 'Size') # Loop through the drives and display them in a table with colors for ($I = 0; $I -lt $AvailableRemovableDrives.Count; $I++) { # Write the index of the drive Write-ColorfulText -C LavenderNoNewLine -I ('{0,-4}' -f ($I + 1)) # Write the name of the drive Write-ColorfulText -C TeaGreenNoNewLine -I ("|{0,-$DriveLetterLength}" -f $AvailableRemovableDrives[$I].DriveLetter) # Write the File System Type of the drive Write-ColorfulText -C PinkNoNewLine -I ("|{0,-$FileSystemTypeLength}" -f $AvailableRemovableDrives[$I].FileSystemType) # Write the Drive Type of the drive Write-ColorfulText -C VioletNoNewLine -I ("|{0,-$DriveTypeLength}" -f $AvailableRemovableDrives[$I].DriveType) # Write the Size of the drive Write-ColorfulText -C Gold ("|{0,-$SizeLength}" -f $AvailableRemovableDrives[$I].Size) } # Get the max count of available network drives and add 1 to it, assign the number as exit value to break the loop when selected [System.Int64]$ExitCodeRemovableDriveSelection = $AvailableRemovableDrives.Count + 1 # Write an exit option at the end of the table Write-Host ('{0,-4}' -f "$ExitCodeRemovableDriveSelection") -NoNewline -ForegroundColor DarkRed Write-Host -Object '|Skip encryptions altogether' -ForegroundColor DarkRed function Confirm-Choice { <# .SYNOPSIS A function to validate the user input .INPUTS System.String .OUTPUTS System.Boolean #> param([System.String]$Choice) # Initialize a flag to indicate if the input is valid or not [System.Boolean]$IsValid = $false # Initialize a variable to store the parsed integer value [System.Int64]$ParsedChoice = 0 # Try to parse the input as an integer # If the parsing succeeded, check if the input is within the range if ([System.Int64]::TryParse($Choice, [ref]$ParsedChoice)) { if ($ParsedChoice -in 1..$ExitCodeRemovableDriveSelection) { $IsValid = $true break } } # Return the flag value return $IsValid } # Prompt the user to enter the number of the drive they want to select, or exit value to exit, until they enter a valid input do { # Read the user input as a string [System.String]$Choice = $(Write-Host -Object "Enter the number of the drive you want to select or press $ExitCodeRemovableDriveSelection to Cancel" -ForegroundColor cyan; Read-Host) # Check if the input is valid using the Confirm-Choice function if (-NOT (Confirm-Choice -Choice $Choice)) { # Write an error message in red if invalid Write-Host -Object "Invalid input. Please enter a number between 1 and $ExitCodeRemovableDriveSelection." -ForegroundColor Red } } while (-NOT (Confirm-Choice -Choice $Choice)) # Check if the user entered the exit value to break out of the loop if ($Choice -eq $ExitCodeRemovableDriveSelection) { break BitLockerCategoryLabel } else { # Get the selected drive from the array and display it return ($($AvailableRemovableDrives[$Choice - 1]).DriveLetter + ':') } } function Block-CountryIP { <# .SYNOPSIS A function that gets a list of IP addresses and a name for them, then adds those IP addresses in the firewall block rules .NOTES -RemoteAddress in New-NetFirewallRule accepts array according to Microsoft Docs, so we use "[System.String[]]$IPList = $IPList -split '\r?\n' -ne ''" to convert the IP lists, which is a single multiline string, into an array how to query the number of IPs in each rule (Get-NetFirewallRule -DisplayName "OFAC Sanctioned Countries IP range blocking" -PolicyStore localhost | Get-NetFirewallAddressFilter).RemoteAddress.count .INPUTS System.String System.String[] .OUTPUTS System.Void #> [CmdletBinding()] param ( [System.String[]]$IPList, [parameter(Mandatory = $True)][System.String]$ListName ) # converts the list from string to string array [System.String[]]$IPList = $IPList -split '\r?\n' -ne '' # make sure the list isn't empty if ($IPList.count -ne 0) { # delete previous rules (if any) to get new up-to-date IP ranges from the sources and set new rules Remove-NetFirewallRule -DisplayName "$ListName IP range blocking" -PolicyStore localhost -ErrorAction SilentlyContinue New-NetFirewallRule -DisplayName "$ListName IP range blocking" -Direction Inbound -Action Block -LocalAddress Any -RemoteAddress $IPList -Description "$ListName IP range blocking" -EdgeTraversalPolicy Block -PolicyStore localhost New-NetFirewallRule -DisplayName "$ListName IP range blocking" -Direction Outbound -Action Block -LocalAddress Any -RemoteAddress $IPList -Description "$ListName IP range blocking" -EdgeTraversalPolicy Block -PolicyStore localhost } else { Write-Warning -Message "The IP list was empty, skipping $ListName" } } function Edit-Addons { <# .SYNOPSIS A function to enable or disable Windows features and capabilities. .INPUTS System.String .OUTPUTS System.String #> [CmdletBinding()] param ( [parameter(Mandatory = $true)] [ValidateSet('Capability', 'Feature')] [System.String]$Type, [parameter(Mandatory = $true, ParameterSetName = 'Capability')] [System.String]$CapabilityName, [parameter(Mandatory = $true, ParameterSetName = 'Feature')] [System.String]$FeatureName, [parameter(Mandatory = $true, ParameterSetName = 'Feature')] [ValidateSet('Enabling', 'Disabling')] [System.String]$FeatureAction ) switch ($Type) { 'Feature' { [System.String]$ActionCheck = ($FeatureAction -eq 'Enabling') ? 'disabled' : 'enabled' [System.String]$ActionOutput = ($FeatureAction -eq 'Enabling') ? 'enabled' : 'disabled' Write-ColorfulText -Color Lavender -InputText "`n$FeatureAction $FeatureName" if ((Get-WindowsOptionalFeature -Online -FeatureName $FeatureName).state -eq $ActionCheck) { try { if ($FeatureAction -eq 'Enabling') { Enable-WindowsOptionalFeature -Online -FeatureName $FeatureName -All -NoRestart | Out-Null } else { Disable-WindowsOptionalFeature -Online -FeatureName $FeatureName -NoRestart | Out-Null } # Shows the successful message only if the process was successful Write-ColorfulText -Color NeonGreen -InputText "$FeatureName was successfully $ActionOutput" } catch { # show errors in non-terminating way $_ } } else { Write-ColorfulText -Color NeonGreen -InputText "$FeatureName is already $ActionOutput" } break } 'Capability' { Write-ColorfulText -Color Lavender -InputText "`nRemoving $CapabilityName" if ((Get-WindowsCapability -Online | Where-Object -FilterScript { $_.Name -like "*$CapabilityName*" }).state -ne 'NotPresent') { try { Get-WindowsCapability -Online | Where-Object -FilterScript { $_.Name -like "*$CapabilityName*" } | Remove-WindowsCapability -Online | Out-Null # Shows the successful message only if the process was successful Write-ColorfulText -Color NeonGreen -InputText "$CapabilityName was successfully removed." } catch { # show errors in non-terminating way $_ } } else { Write-ColorfulText -Color NeonGreen -InputText "$CapabilityName is already removed." } break } } } #endregion Helper-Functions if ($IsAdmin) { Write-Verbose -Message 'Getting the current configurations and preferences of the Microsoft Defender...' [Microsoft.Management.Infrastructure.CimInstance]$MDAVConfigCurrent = Get-MpComputerStatus [Microsoft.Management.Infrastructure.CimInstance]$MDAVPreferencesCurrent = Get-MpPreference Write-Verbose -Message 'Backing up the current Controlled Folder Access allowed apps list in order to restore them at the end' # doing this so that when we Add and then Remove PowerShell executables in Controlled folder access exclusions # no user customization will be affected [System.IO.FileInfo[]]$CFAAllowedAppsBackup = $MDAVPreferencesCurrent.ControlledFolderAccessAllowedApplications Write-Verbose -Message 'Temporarily adding the currently running PowerShell executables to the Controlled Folder Access allowed apps list' # so that the script can run without interruption. This change is reverted at the end. # Adding powercfg.exe so Controlled Folder Access won't complain about it in BitLocker category when setting hibernate file size to full foreach ($FilePath in (((Get-ChildItem -Path "$PSHOME\*.exe" -File).FullName) + "$env:SystemDrive\Windows\System32\powercfg.exe")) { Add-MpPreference -ControlledFolderAccessAllowedApplications $FilePath } } # doing a try-catch-finally block on the entire script so that when CTRL + C is pressed to forcefully exit the script, # or break is passed, clean up will still happen for secure exit. Any error that happens will be thrown try { if (!$Categories) { Write-Host -Object "`r`n" Write-ColorfulText -Color Rainbow -InputText "############################################################################################################`r`n" Write-ColorfulText -Color MintGreen -InputText "### Please read the Readme in the GitHub repository: https://github.com/HotCakeX/Harden-Windows-Security ###`r`n" Write-ColorfulText -Color Rainbow -InputText "############################################################################################################`r`n" } #region RequirementsCheck Write-Verbose -Message 'Checking if the OS is Windows Home edition...' if ((Get-CimInstance -ClassName Win32_OperatingSystem).OperatingSystemSKU -eq '101') { Throw [System.PlatformNotSupportedException] 'Windows Home edition detected, exiting...' } # Get OS build version [System.Decimal]$OSBuild = [System.Environment]::OSVersion.Version.Build # Get the Update Build Revision (UBR) number [System.Decimal]$UBR = Get-ItemPropertyValue -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion' -Name 'UBR' # Create the full OS build number as seen in Windows Settings [System.Decimal]$FullOSBuild = "$OSBuild.$UBR" Write-Verbose -Message 'Checking if the OS build is equal or greater than the required build...' if (-NOT ($FullOSBuild -ge $Requiredbuild)) { Throw "You're not using the latest build of the Windows OS. A minimum build of $Requiredbuild is required but your OS build is $FullOSBuild`nPlease go to Windows Update to install the updates and then try again." } if ($IsAdmin) { Write-Verbose -Message 'Checking if Secure Boot is enabled...' if (-NOT (Confirm-SecureBootUEFI)) { Throw 'Secure Boot is not enabled. Please enable it in your UEFI settings and try again.' } Write-Verbose -Message 'Checking if TPM is available and enabled...' [System.Object]$TPM = Get-Tpm if (-NOT ($TPM.tpmpresent -and $TPM.tpmenabled)) { Throw 'TPM is not available or enabled, please enable it in UEFI settings and try again.' } if (-NOT ($MDAVConfigCurrent.AMServiceEnabled -eq $true)) { Throw 'Microsoft Defender Anti Malware service is not enabled, please enable it and then try again.' } if (-NOT ($MDAVConfigCurrent.AntispywareEnabled -eq $true)) { Throw 'Microsoft Defender Anti Spyware is not enabled, please enable it and then try again.' } if (-NOT ($MDAVConfigCurrent.AntivirusEnabled -eq $true)) { Throw 'Microsoft Defender Anti Virus is not enabled, please enable it and then try again.' } if ($MDAVConfigCurrent.AMRunningMode -ne 'Normal') { Throw "Microsoft Defender is running in $($MDAVConfigCurrent.AMRunningMode) state, please remove any 3rd party AV and then try again." } } #endregion RequirementsCheck # Create the working directory [System.IO.DirectoryInfo]$WorkingDir = New-Item -ItemType Directory -Path "$CurrentUserTempDirectoryPath\HardeningXStuff\" -Force # Create a variable to store the current step number for the progress bar [System.Int64]$CurrentMainStep = 0 # Create a reference variable that points to the original variable [ref]$RefCurrentMainStep = $CurrentMainStep Write-Progress -Id 0 -Activity 'Downloading the required files' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete 1 # Change the title of the Windows Terminal for PowerShell tab $Host.UI.RawUI.WindowTitle = '⏬ Downloading' try { # Create an array of files to download [System.Object[]]$Files = @( # System.Net.WebClient requires absolute path instead of relative one @{url = 'https://download.microsoft.com/download/8/5/C/85C25433-A1B0-4FFA-9429-7E023E7DA8D8/Windows%2011%20v23H2%20Security%20Baseline.zip'; path = "$WorkingDir\MicrosoftSecurityBaseline.zip"; tag = 'MicrosoftSecurityBaseline' } @{url = 'https://download.microsoft.com/download/8/5/C/85C25433-A1B0-4FFA-9429-7E023E7DA8D8/Microsoft%20365%20Apps%20for%20Enterprise%202306.zip'; path = "$WorkingDir\Microsoft365SecurityBaseline.zip"; tag = 'Microsoft365SecurityBaseline' } @{url = 'https://download.microsoft.com/download/8/5/C/85C25433-A1B0-4FFA-9429-7E023E7DA8D8/LGPO.zip'; path = "$WorkingDir\LGPO.zip"; tag = 'LGPO' } @{url = 'https://raw.githubusercontent.com/HotCakeX/Harden-Windows-Security/main/Harden-Windows-Security%20Module/Main%20files/Resources/Security-Baselines-X.zip'; path = "$WorkingDir\Security-Baselines-X.zip"; tag = 'Security-Baselines-X' } @{url = 'https://raw.githubusercontent.com/HotCakeX/Harden-Windows-Security/main/Harden-Windows-Security%20Module/Main%20files/Resources/Registry.csv'; path = "$WorkingDir\Registry.csv"; tag = 'Registry' } @{url = 'https://raw.githubusercontent.com/HotCakeX/Harden-Windows-Security/main/Harden-Windows-Security%20Module/Main%20files/Resources/ProcessMitigations.csv'; path = "$WorkingDir\ProcessMitigations.csv"; tag = 'ProcessMitigations' } @{url = 'https://raw.githubusercontent.com/HotCakeX/Harden-Windows-Security/main/Harden-Windows-Security%20Module/Main%20files/Resources/EventViewerCustomViews.zip'; path = "$WorkingDir\EventViewerCustomViews.zip"; tag = 'EventViewerCustomViews' } ) # Get the total number of files to download based on whether the script is running locally or not [System.Int16]$TotalRequiredFiles = $IsLocally ? ($Files.Count - 4) : $Files.Count # Initialize a counter for the progress bar [System.Int16]$RequiredFilesCounter = 0 # Start a job for each file download [System.Object[]]$Jobs = foreach ($File in $Files) { # If running locally, skip downloading the files that are already shipped with the Harden Windows Security module if ($IsLocally) { if ($File.tag -in @('Security-Baselines-X', 'Registry', 'ProcessMitigations', 'EventViewerCustomViews')) { Write-Verbose -Message "Skipping downloading the $($File.tag) because of local mode." Continue } } # If running in offline mode, skip downloading the files that are manually provided by the user if ($Offline) { if ($File.tag -in @('MicrosoftSecurityBaseline', 'Microsoft365SecurityBaseline', 'LGPO')) { Write-Verbose -Message "Skipping downloading the $($File.tag) because of offline mode." Continue } } Start-Job -ScriptBlock { param([System.Uri]$Url, [System.IO.FileInfo]$Path, [System.String]$Tag) # Create a WebClient object [System.Net.WebClient]$WC = New-Object -TypeName System.Net.WebClient try { # Try to download the file from the original URL $WC.DownloadFile($Url, $Path) } catch { # a switch for when the original URLs are failing and to provide Alt URL switch ($Tag) { 'Security-Baselines-X' { Write-Host -Object 'Using Azure DevOps for Security-Baselines-X.zip' -ForegroundColor Yellow [System.Uri]$AltURL = 'https://dev.azure.com/SpyNetGirl/011c178a-7b92-462b-bd23-2c014528a67e/_apis/git/repositories/5304fef0-07c0-4821-a613-79c01fb75657/items?path=/Payload/Security-Baselines-X.zip' $WC.DownloadFile($AltURL, $Path) break } 'Registry' { Write-Host -Object 'Using Azure DevOps for Registry.csv' -ForegroundColor Yellow [System.Uri]$AltURL = 'https://dev.azure.com/SpyNetGirl/011c178a-7b92-462b-bd23-2c014528a67e/_apis/git/repositories/5304fef0-07c0-4821-a613-79c01fb75657/items?path=/Payload/Registry.csv' $WC.DownloadFile($AltURL, $Path) break } 'ProcessMitigations' { Write-Host -Object 'Using Azure DevOps for ProcessMitigations.CSV' -ForegroundColor Yellow [System.Uri]$AltURL = 'https://dev.azure.com/SpyNetGirl/011c178a-7b92-462b-bd23-2c014528a67e/_apis/git/repositories/5304fef0-07c0-4821-a613-79c01fb75657/items?path=/Payload/ProcessMitigations.csv' $WC.DownloadFile($AltURL, $Path) break } 'EventViewerCustomViews' { Write-Host -Object 'Using Azure DevOps for EventViewerCustomViews.zip' -ForegroundColor Yellow [System.Uri]$AltURL = 'https://dev.azure.com/SpyNetGirl/011c178a-7b92-462b-bd23-2c014528a67e/_apis/git/repositories/5304fef0-07c0-4821-a613-79c01fb75657/items?path=/Payload/EventViewerCustomViews.zip' $WC.DownloadFile($AltURL, $Path) break } default { # Throw the error if any other URL fails and stop the operation Throw $_ } } } } -ArgumentList $File.url, $File.path, $File.tag # Increment the counter by one $RequiredFilesCounter++ # Write the progress of the download jobs Write-Progress -Id 1 -ParentId 0 -Activity "Downloading $($file.tag)" -Status "$RequiredFilesCounter of $TotalRequiredFiles" -PercentComplete ($RequiredFilesCounter / $TotalRequiredFiles * 100) } # Wait until all jobs are completed while ($Jobs | Where-Object -FilterScript { $_.State -ne 'Completed' }) { Start-Sleep -Milliseconds 700 } # Receive the output or errors of each job and remove the job foreach ($Job in $Jobs) { Receive-Job -Job $Job Remove-Job -Job $Job } Write-Progress -Id 1 -ParentId 0 -Activity 'Downloading files completed.' -Completed } catch { foreach ($Job in $Jobs) { Remove-Job -Job $Job } Throw 'The required files could not be downloaded, Make sure you have Internet connection.' } if ($IsLocally) { Write-Verbose -Message 'Local Mode; Copying the Security-Baselines-X, Registry, ProcessMitigations and EventViewerCustomViews files from the module folder to the working directory' Copy-Item -Path "$HardeningModulePath\Resources\Security-Baselines-X.zip" -Destination "$WorkingDir\Security-Baselines-X.zip" Copy-Item -Path "$HardeningModulePath\Resources\Registry.csv" -Destination "$WorkingDir\Registry.csv" Copy-Item -Path "$HardeningModulePath\Resources\ProcessMitigations.csv" -Destination "$WorkingDir\ProcessMitigations.csv" Copy-Item -Path "$HardeningModulePath\Resources\EventViewerCustomViews.zip" -Destination "$WorkingDir\EventViewerCustomViews.zip" } if ($Offline) { Write-Verbose -Message 'Offline Mode; Copying the Microsoft Security Baselines, Microsoft 365 Apps for Enterprise Security Baselines and LGPO files from the user provided paths to the working directory' Copy-Item -Path "$PathToLGPO" -Destination "$WorkingDir\LGPO.zip" Copy-Item -Path "$PathToMSFTSecurityBaselines" -Destination "$WorkingDir\MicrosoftSecurityBaseline.zip" Copy-Item -Path "$PathToMSFT365AppsSecurityBaselines" -Destination "$WorkingDir\Microsoft365SecurityBaseline.zip" } Write-Verbose -Message 'Unzipping the archives' Expand-Archive -Path "$WorkingDir\MicrosoftSecurityBaseline.zip" -DestinationPath "$WorkingDir\MicrosoftSecurityBaseline" -Force Expand-Archive -Path "$WorkingDir\Microsoft365SecurityBaseline.zip" -DestinationPath "$WorkingDir\Microsoft365SecurityBaseline" -Force Expand-Archive -Path "$WorkingDir\LGPO.zip" -DestinationPath "$WorkingDir\" -Force Expand-Archive -Path "$WorkingDir\Security-Baselines-X.zip" -DestinationPath "$WorkingDir\Security-Baselines-X\" -Force # capturing the Microsoft Security Baselines extracted path in a variable using wildcard and storing it in a variable so that we won't need to change anything in the code other than the download link when they are updated [System.String]$MicrosoftSecurityBaselinePath = (Get-ChildItem -Directory -Path "$WorkingDir\MicrosoftSecurityBaseline\*\").FullName # capturing the Microsoft 365 Security Baselines extracted path in a variable using wildcard and storing it in a variable so that we won't need to change anything in the code other than the download link when they are updated [System.String]$Microsoft365SecurityBaselinePath = (Get-ChildItem -Directory -Path "$WorkingDir\Microsoft365SecurityBaseline\*\").FullName # Storing the registry CSV file in a variable [System.Object[]]$RegistryCSVItems = Import-Csv -Path "$WorkingDir\Registry.csv" -Delimiter ',' # Storing the LGPO.exe path in a variable [System.IO.FileInfo]$LGPOExe = Get-ChildItem -Path "$WorkingDir\LGPO_30\LGPO.exe" -File # Copying LGPO.exe from its folder to Microsoft Security Baseline folder in order to get it ready to be used by PowerShell script Copy-Item -Path $LGPOExe -Destination "$MicrosoftSecurityBaselinePath\Scripts\Tools" # Copying LGPO.exe from its folder to Microsoft Office 365 Apps for Enterprise Security Baseline folder in order to get it ready to be used by PowerShell script Copy-Item -Path $LGPOExe -Destination "$Microsoft365SecurityBaselinePath\Scripts\Tools" #Region Hardening-Categories-Functions Function Invoke-WindowsBootManagerRevocations { param([System.Management.Automation.SwitchParameter]$RunUnattended) # If admin rights are not detected, break out of the function if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🫶 Category 0' Write-Verbose -Message 'Processing the Category 0 function' :Category0Label switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nApply May 9 2023 Windows Boot Manager Security measures ? (If you've already run this category, don't need to do it again)")) { 'Yes' { Write-Verbose -Message 'Applying the required security measures for Windows Boot Manager' Write-Progress -Id 0 -Activity 'Windows Boot Manager revocations for Secure Boot' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) reg add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Secureboot /v AvailableUpdates /t REG_DWORD /d 0x30 /f Write-ColorfulText -Color MintGreen -InputText 'The required security measures have been applied to the system' Write-Warning -Message 'Make sure to restart your device once. After restart, wait for at least 5-10 minutes and perform a 2nd restart to finish applying security measures completely.' } 'No' { break Category0Label } 'Exit' { break MainSwitchLabel } } } Function Invoke-MicrosoftSecurityBaselines { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🔐 Security Baselines' Write-Verbose -Message 'Processing the Security Baselines category function' Write-Verbose -Message "Changing the current directory to '$MicrosoftSecurityBaselinePath\Scripts\'" Push-Location -Path "$MicrosoftSecurityBaselinePath\Scripts\" :MicrosoftSecurityBaselinesCategoryLabel switch ($RunUnattended ? ($SecBaselines_NoOverrides ? 'Yes' : 'Yes, With the Optional Overrides (Recommended)') : (Select-Option -Options 'Yes', 'Yes, With the Optional Overrides (Recommended)' , 'No', 'Exit' -Message "`nApply Microsoft Security Baseline ?")) { 'Yes' { Write-Verbose -Message 'Applying the Microsoft Security Baselines without the optional overrides' Write-Progress -Id 0 -Activity 'Microsoft Security Baseline' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) Write-Verbose -Message 'Running the official PowerShell script included in the Microsoft Security Baseline file downloaded from Microsoft servers' .\Baseline-LocalInstall.ps1 -Win11NonDomainJoined 4>$null } 'Yes, With the Optional Overrides (Recommended)' { Write-Verbose -Message 'Applying the Microsoft Security Baselines with the optional overrides' Write-Progress -Id 0 -Activity 'Microsoft Security Baseline' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) Write-Verbose -Message 'Running the official PowerShell script included in the Microsoft Security Baseline file downloaded from Microsoft servers' .\Baseline-LocalInstall.ps1 -Win11NonDomainJoined 4>$null Start-Sleep -Seconds 1 &$LGPOExe /q /m "$WorkingDir\Security-Baselines-X\Overrides for Microsoft Security Baseline\registry.pol" &$LGPOExe /q /s "$WorkingDir\Security-Baselines-X\Overrides for Microsoft Security Baseline\GptTmpl.inf" Write-Verbose -Message 'Re-enabling the XblGameSave Standby Task that gets disabled by Microsoft Security Baselines' SCHTASKS.EXE /Change /TN \Microsoft\XblGameSave\XblGameSaveTask /Enable } 'No' { break MicrosoftSecurityBaselinesCategoryLabel } 'Exit' { break MainSwitchLabel } } Write-Verbose -Message 'Restoring the original directory location' Pop-Location } Function Invoke-Microsoft365AppsSecurityBaselines { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🧁 M365 Apps Security' Write-Verbose -Message 'Processing the M365 Apps Security category function' :Microsoft365AppsSecurityBaselinesCategoryLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nApply Microsoft 365 Apps Security Baseline ?")) { 'Yes' { Write-Verbose -Message 'Applying the Microsoft 365 Apps Security Baseline' Write-Progress -Id 0 -Activity 'Microsoft 365 Apps Security Baseline' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) Write-Verbose -Message "Changing the current directory to '$Microsoft365SecurityBaselinePath\Scripts\'" Push-Location -Path "$Microsoft365SecurityBaselinePath\Scripts\" Write-Verbose -Message 'Running the official PowerShell script included in the Microsoft 365 Apps Security Baseline file downloaded from Microsoft servers' .\Baseline-LocalInstall.ps1 4>$null Write-Verbose -Message 'Restoring the original directory location' Pop-Location } 'No' { break Microsoft365AppsSecurityBaselinesCategoryLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-MicrosoftDefender { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🍁 MSFT Defender' Write-Verbose -Message 'Processing the Microsoft Defender category function' :MicrosoftDefenderLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nRun Microsoft Defender category ?")) { 'Yes' { Write-Verbose -Message 'Running the Microsoft Defender category' Write-Progress -Id 0 -Activity 'Microsoft Defender' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) &$LGPOExe /q /m "$WorkingDir\Security-Baselines-X\Microsoft Defender Policies\registry.pol" Write-Verbose -Message 'Optimizing Network Protection Performance of the Microsoft Defender' Set-MpPreference -AllowSwitchToAsyncInspection $True Write-Verbose -Message 'Enabling Real-time protection and Security Intelligence Updates during OOBE' Set-MpPreference -OobeEnableRtpAndSigUpdate $True Write-Verbose -Message 'Enabling Intel Threat Detection Technology' Set-MpPreference -IntelTDTEnabled $True Write-Verbose -Message 'Enabling Restore point scan' Set-MpPreference -DisableRestorePoint $False Write-Verbose -Message 'Disabling Performance mode of Defender that only applies to Dev drives by lowering security' Set-MpPreference -PerformanceModeStatus Disabled Write-Verbose -Message 'Setting the Network Protection to block network traffic instead of displaying a warning' Set-MpPreference -EnableConvertWarnToBlock $True Write-Verbose -Message 'Setting the Brute-Force Protection to use cloud aggregation to block IP addresses that are over 99% likely malicious' Set-MpPreference -BruteForceProtectionAggressiveness 1 # 2nd level aggression will come after further testing Write-Verbose -Message 'Setting the Brute-Force Protection to prevent suspicious and malicious behaviors' Set-MpPreference -BruteForceProtectionConfiguredState 1 Write-Verbose -Message 'Setting the internal feature logic to determine blocking time for the Brute-Force Protections' Set-MpPreference -BruteForceProtectionMaxBlockTime 0 Write-Verbose -Message 'Setting the Remote Encryption Protection to use cloud intel and context, and block when confidence level is above 90%' Set-MpPreference -RemoteEncryptionProtectionAggressiveness 2 Write-Verbose -Message 'Setting the Remote Encryption Protection to prevent suspicious and malicious behaviors' Set-MpPreference -RemoteEncryptionProtectionConfiguredState 1 Write-Verbose -Message 'Setting the internal feature logic to determine blocking time for the Remote Encryption Protection' Set-MpPreference -RemoteEncryptionProtectionMaxBlockTime 0 Write-Verbose -Message 'Adding OneDrive folders of all the user accounts (personal and work accounts) to the Controlled Folder Access for Ransomware Protection' Get-ChildItem -Path "$env:SystemDrive\Users\*\OneDrive*\" -Directory | ForEach-Object -Process { Add-MpPreference -ControlledFolderAccessProtectedFolders $_ } Write-Verbose -Message 'Enabling Mandatory ASLR Exploit Protection system-wide' Set-ProcessMitigation -System -Enable ForceRelocateImages Write-Verbose -Message 'Applying the Process Mitigations' [System.Object[]]$ProcessMitigations = Import-Csv -Path "$WorkingDir\ProcessMitigations.csv" -Delimiter ',' # Group the data by ProgramName [System.Object[]]$GroupedMitigations = $ProcessMitigations | Group-Object -Property ProgramName # Get the current process mitigations [System.Object[]]$AllAvailableMitigations = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\*') # Loop through each group to remove the mitigations, this way we apply clean set of mitigations in the next step Write-Verbose -Message 'Removing the existing process mitigations' foreach ($Group in $GroupedMitigations) { # To separate the filename from full path of the item in the CSV and then check whether it exists in the system registry if ($Group.Name -match '\\([^\\]+)$') { if ($Matches[1] -in $AllAvailableMitigations.pschildname) { try { Remove-Item -Path "Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\$($Matches[1])" -Recurse -Force } catch { Write-Verbose -Message "Failed to remove $($Matches[1]), it's probably protected by the system." } } } elseif ($Group.Name -in $AllAvailableMitigations.pschildname) { try { Remove-Item -Path "Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\$($Group.Name)" -Recurse -Force } catch { Write-Verbose -Message "Failed to remove $($Group.Name), it's probably protected by the system." } } } Write-Verbose -Message 'Adding the process mitigations' foreach ($Group in $GroupedMitigations) { # Get the program name [System.String]$ProgramName = $Group.Name Write-Verbose -Message "Adding process mitigations for $ProgramName" # Get the list of mitigations to enable [System.String[]]$EnableMitigations = $Group.Group | Where-Object -FilterScript { $_.Action -eq 'Enable' } | Select-Object -ExpandProperty Mitigation # Get the list of mitigations to disable [System.String[]]$DisableMitigations = $Group.Group | Where-Object -FilterScript { $_.Action -eq 'Disable' } | Select-Object -ExpandProperty Mitigation # Call the Set-ProcessMitigation cmdlet with the lists of mitigations if ($null -ne $EnableMitigations) { if ($null -ne $DisableMitigations) { Set-ProcessMitigation -Name $ProgramName -Enable $EnableMitigations -Disable $DisableMitigations } else { Set-ProcessMitigation -Name $ProgramName -Enable $EnableMitigations } } elseif ($null -ne $DisableMitigations) { Set-ProcessMitigation -Name $ProgramName -Disable $DisableMitigations } } Write-Verbose -Message 'Turning on Data Execution Prevention (DEP) for all applications, including 32-bit programs' # Old method: bcdedit.exe /set '{current}' nx AlwaysOn | Out-Null # New method using PowerShell cmdlets added in Windows 11 Set-BcdElement -Element 'nx' -Type 'Integer' -Value '3' -Force # Suggest turning on Smart App Control only if it's in Eval mode if ((Get-MpComputerStatus).SmartAppControlState -eq 'Eval') { :SmartAppControlLabel switch ($RunUnattended ? ($MSFTDefender_SAC ? 'Yes' : 'No' ) : (Select-Option -SubCategory -Options 'Yes', 'No', 'Exit' -Message "`nTurn on Smart App Control ?")) { 'Yes' { Write-Verbose -Message 'Turning on Smart App Control' Edit-Registry -path 'Registry::HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CI\Policy' -key 'VerifiedAndReputablePolicyState' -value '1' -type 'DWORD' -Action 'AddOrModify' # Let the optional diagnostic data be enabled automatically $ShouldEnableOptionalDiagnosticData = $True } 'No' { break SmartAppControlLabel } 'Exit' { break MainSwitchLabel } } } if (($ShouldEnableOptionalDiagnosticData -eq $True) -or ((Get-MpComputerStatus).SmartAppControlState -eq 'On')) { Write-Verbose -Message 'Enabling Optional Diagnostic Data because SAC is on or user selected to turn it on' &$LGPOExe /q /m "$WorkingDir\Security-Baselines-X\Microsoft Defender Policies\Optional Diagnostic Data\registry.pol" } else { # Ask user if they want to turn on optional diagnostic data only if Smart App Control is not already turned off if ((Get-MpComputerStatus).SmartAppControlState -ne 'Off') { :SmartAppControlLabel2 switch ($RunUnattended ? ($MSFTDefender_NoDiagData ? 'No' : 'Yes') : (Select-Option -SubCategory -Options 'Yes', 'No', 'Exit' -Message "`nEnable Optional Diagnostic Data ?" -ExtraMessage 'Required for Smart App Control usage and evaluation, read the GitHub Readme!')) { 'Yes' { Write-Verbose -Message 'Enabling Optional Diagnostic Data' &$LGPOExe /q /m "$WorkingDir\Security-Baselines-X\Microsoft Defender Policies\Optional Diagnostic Data\registry.pol" } 'No' { break SmartAppControlLabel2 } 'Exit' { break MainSwitchLabel } } } else { Write-Verbose -Message 'Smart App Control is turned off, so Optional Diagnostic Data will not be enabled' } } Write-Verbose -Message 'Getting the state of fast weekly Microsoft recommended driver block list update scheduled task' [System.String]$BlockListScheduledTaskState = (Get-ScheduledTask -TaskName 'MSFT Driver Block list update' -TaskPath '\MSFT Driver Block list update\' -ErrorAction SilentlyContinue).State # Create scheduled task for fast weekly Microsoft recommended driver block list update if it doesn't exist or exists but is not Ready/Running if (($BlockListScheduledTaskState -notin 'Ready', 'Running')) { :TaskSchedulerCreationLabel switch ($RunUnattended ? ($MSFTDefender_NoScheduledTask ? 'No' : 'Yes') : (Select-Option -SubCategory -Options 'Yes', 'No', 'Exit' -Message "`nCreate scheduled task for fast weekly Microsoft recommended driver block list update ?")) { 'Yes' { Write-Verbose -Message 'Creating scheduled task for fast weekly Microsoft recommended driver block list update' # Create a scheduled task action, this defines how to download and install the latest Microsoft Recommended Driver Block Rules [Microsoft.Management.Infrastructure.CimInstance]$Action = New-ScheduledTaskAction -Execute 'Powershell.exe' ` -Argument '-NoProfile -WindowStyle Hidden -command "& {try {Invoke-WebRequest -Uri "https://aka.ms/VulnerableDriverBlockList" -OutFile VulnerableDriverBlockList.zip -ErrorAction Stop}catch{exit 1};Expand-Archive -Path .\VulnerableDriverBlockList.zip -DestinationPath "VulnerableDriverBlockList" -Force;Rename-Item -Path .\VulnerableDriverBlockList\SiPolicy_Enforced.p7b -NewName "SiPolicy.p7b" -Force;Copy-Item -Path .\VulnerableDriverBlockList\SiPolicy.p7b -Destination "$env:SystemDrive\Windows\System32\CodeIntegrity" -Force;citool --refresh -json;Remove-Item -Path .\VulnerableDriverBlockList -Recurse -Force;Remove-Item -Path .\VulnerableDriverBlockList.zip -Force; exit 0;}"' # Create a scheduled task principal and assign the SYSTEM account's well-known SID to it so that the task will run under its context [Microsoft.Management.Infrastructure.CimInstance]$TaskPrincipal = New-ScheduledTaskPrincipal -LogonType S4U -UserId 'S-1-5-18' -RunLevel Highest # Create a trigger for the scheduled task. The task will first run one hour after its creation and from then on will run every 7 days, indefinitely [Microsoft.Management.Infrastructure.CimInstance]$Time = New-ScheduledTaskTrigger -Once -At (Get-Date).AddHours(1) -RepetitionInterval (New-TimeSpan -Days 7) # Register the scheduled task Register-ScheduledTask -Action $Action -Trigger $Time -Principal $TaskPrincipal -TaskPath 'MSFT Driver Block list update' -TaskName 'MSFT Driver Block list update' -Description 'Microsoft Recommended Driver Block List update' -Force # Define advanced settings for the scheduled task [Microsoft.Management.Infrastructure.CimInstance]$TaskSettings = New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries -Compatibility 'Win8' -StartWhenAvailable -ExecutionTimeLimit (New-TimeSpan -Minutes 3) -RestartCount 4 -RestartInterval (New-TimeSpan -Hours 6) -RunOnlyIfNetworkAvailable # Add the advanced settings we defined above to the scheduled task Set-ScheduledTask -TaskName 'MSFT Driver Block list update' -TaskPath 'MSFT Driver Block list update' -Settings $TaskSettings } 'No' { break TaskSchedulerCreationLabel } 'Exit' { break MainSwitchLabel } } } else { Write-Verbose -Message "Scheduled task for fast weekly Microsoft recommended driver block list update already exists and is in $BlockListScheduledTaskState state" } # Only display this prompt if Engine and Platform update channels are not already set to Beta if (($MDAVPreferencesCurrent.EngineUpdatesChannel -ne '2') -or ($MDAVPreferencesCurrent.PlatformUpdatesChannel -ne '2')) { # Set Microsoft Defender engine and platform update channel to beta - Devices in the Windows Insider Program are subscribed to this channel by default. :DefenderUpdateChannelsLabel switch ($RunUnattended ? ($MSFTDefender_BetaChannels ? 'Yes' : 'No') : (Select-Option -SubCategory -Options 'Yes', 'No', 'Exit' -Message "`nSet Microsoft Defender engine and platform update channel to beta ?")) { 'Yes' { Write-Verbose -Message 'Setting Microsoft Defender engine and platform update channel to beta' Set-MpPreference -EngineUpdatesChannel beta Set-MpPreference -PlatformUpdatesChannel beta } 'No' { break DefenderUpdateChannelsLabel } 'Exit' { break MainSwitchLabel } } } else { Write-Verbose -Message 'Microsoft Defender engine and platform update channel is already set to beta' } } 'No' { break MicrosoftDefenderLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-AttackSurfaceReductionRules { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🪷 ASR Rules' Write-Verbose -Message 'Processing the ASR Rules category function' :ASRRulesCategoryLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nRun Attack Surface Reduction Rules category ?")) { 'Yes' { Write-Verbose -Message 'Running the Attack Surface Reduction Rules category' Write-Progress -Id 0 -Activity 'Attack Surface Reduction Rules' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) &$LGPOExe /q /m "$WorkingDir\Security-Baselines-X\Attack Surface Reduction Rules Policies\registry.pol" } 'No' { break ASRRulesCategoryLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-BitLockerSettings { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🔑 BitLocker' Write-Verbose -Message 'Processing the BitLocker category function' :BitLockerCategoryLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nRun Bitlocker category ?")) { 'Yes' { Write-Verbose -Message 'Running the Bitlocker category' Write-Progress -Id 0 -Activity 'Bitlocker Settings' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) &$LGPOExe /q /m "$WorkingDir\Security-Baselines-X\Bitlocker Policies\registry.pol" # This PowerShell script can be used to find out if the DMA Protection is ON \ OFF. # The Script will show this by emitting True \ False for On \ Off respectively. # bootDMAProtection check - checks for Kernel DMA Protection status in System information or msinfo32 [System.String]$BootDMAProtectionCheck = @' namespace SystemInfo { using System; using System.Runtime.InteropServices; public static class NativeMethods { internal enum SYSTEM_DMA_GUARD_POLICY_INFORMATION : int { /// </summary> SystemDmaGuardPolicyInformation = 202 } [DllImport("ntdll.dll")] internal static extern Int32 NtQuerySystemInformation( SYSTEM_DMA_GUARD_POLICY_INFORMATION SystemDmaGuardPolicyInformation, IntPtr SystemInformation, Int32 SystemInformationLength, out Int32 ReturnLength); public static byte BootDmaCheck() { Int32 result; Int32 SystemInformationLength = 1; IntPtr SystemInformation = Marshal.AllocHGlobal(SystemInformationLength); Int32 ReturnLength; result = NativeMethods.NtQuerySystemInformation( NativeMethods.SYSTEM_DMA_GUARD_POLICY_INFORMATION.SystemDmaGuardPolicyInformation, SystemInformation, SystemInformationLength, out ReturnLength); if (result == 0) { byte info = Marshal.ReadByte(SystemInformation, 0); return info; } return 0; } } } '@ # if the type is not already loaded, load it if (-NOT ('SystemInfo.NativeMethods' -as [System.Type])) { Write-Verbose -Message 'Loading SystemInfo.NativeMethods type' Add-Type -TypeDefinition $BootDMAProtectionCheck -Language CSharp -Verbose:$false } else { Write-Verbose -Message 'SystemInfo.NativeMethods type is already loaded, skipping loading it again.' } # returns true or false depending on whether Kernel DMA Protection is on or off [System.Boolean]$BootDMAProtection = ([SystemInfo.NativeMethods]::BootDmaCheck()) -ne 0 # Enables or disables DMA protection from Bitlocker Countermeasures based on the status of Kernel DMA protection. if ($BootDMAProtection) { Write-Host -Object 'Kernel DMA protection is enabled on the system, disabling Bitlocker DMA protection.' -ForegroundColor Blue &$LGPOExe /q /m "$WorkingDir\Security-Baselines-X\Overrides for Microsoft Security Baseline\Bitlocker DMA\Bitlocker DMA Countermeasure OFF\Registry.pol" } else { Write-Host -Object 'Kernel DMA protection is unavailable on the system, enabling Bitlocker DMA protection.' -ForegroundColor Blue &$LGPOExe /q /m "$WorkingDir\Security-Baselines-X\Overrides for Microsoft Security Baseline\Bitlocker DMA\Bitlocker DMA Countermeasure ON\Registry.pol" } # Make sure there is no CD/DVD drives or mounted ISO in the system, because BitLocker throws an error when there is if ((Get-CimInstance -ClassName Win32_CDROMDrive -Property *).MediaLoaded) { Write-Warning -Message 'Remove any CD/DVD drives or mounted images/ISO from the system and run the Bitlocker category again.' # break from the entire BitLocker category and continue to the next category break BitLockerCategoryLabel } # check make sure Bitlocker isn't in the middle of decryption/encryption operation (on System Drive) if ((Get-BitLockerVolume -MountPoint $env:SystemDrive).EncryptionPercentage -notin '100', '0') { $EncryptionPercentageVar = (Get-BitLockerVolume -MountPoint $env:SystemDrive).EncryptionPercentage Write-Host -Object "`nPlease wait for Bitlocker to finish encrypting or decrypting the Operation System Drive." -ForegroundColor Yellow Write-Host -Object "Drive $env:SystemDrive encryption is currently at $EncryptionPercentageVar percent." -ForegroundColor Yellow # break from the entire BitLocker category and continue to the next category break BitLockerCategoryLabel } # A script block that generates recovery codes just like Windows does [System.Management.Automation.ScriptBlock]$RecoveryPasswordContentGenerator = { param ([System.Object[]]$KeyProtectorsInputFromScriptBlock) return @" BitLocker Drive Encryption recovery key To verify that this is the correct recovery key, compare the start of the following identifier with the identifier value displayed on your PC. Identifier: $(($KeyProtectorsInputFromScriptBlock | Where-Object -FilterScript { $_.keyprotectortype -eq 'RecoveryPassword' }).KeyProtectorId.Trim('{', '}')) If the above identifier matches the one displayed by your PC, then use the following key to unlock your drive. Recovery Key: $(($KeyProtectorsInputFromScriptBlock | Where-Object -FilterScript { $_.keyprotectortype -eq 'RecoveryPassword' }).RecoveryPassword) If the above identifier doesn't match the one displayed by your PC, then this isn't the right key to unlock your drive. Try another recovery key, or refer to https://learn.microsoft.com/en-us/windows/security/operating-system-security/data-protection/bitlocker/recovery-overview for additional assistance. IMPORTANT: Make sure to keep it in a safe place, e.g., in OneDrive's Personal Vault which requires additional authentication to access. "@ } :OSDriveEncryptionLabel switch ($RunUnattended ? 'Skip encryptions altogether' : (Select-Option -SubCategory -Options 'Normal: TPM + Startup PIN + Recovery Password', 'Enhanced: TPM + Startup PIN + Startup Key + Recovery Password', 'Skip encryptions altogether', 'Exit' -Message "`nPlease select your desired security level" -ExtraMessage "If you are not sure, refer to the BitLocker category in the GitHub Readme`n")) { 'Normal: TPM + Startup PIN + Recovery Password' { # check if Bitlocker is enabled for the system drive with Normal security level if ((Get-BitLockerVolume -MountPoint $env:SystemDrive).ProtectionStatus -eq 'on') { # Get the OS Drive's encryption method [System.String]$EncryptionMethodOSDrive = (Get-BitLockerVolume -MountPoint $env:SystemDrive).EncryptionMethod # Check OS Drive's encryption method and display a warning if it's not the most secure one if ($EncryptionMethodOSDrive -ine 'XtsAes256') { Write-Warning -Message "The OS Drive is encrypted with the less secure '$EncryptionMethodOSDrive' encryption method instead of 'XtsAes256'" } # Get the key protectors of the OS Drive [System.Object[]]$KeyProtectorsOSDrive = (Get-BitLockerVolume -MountPoint $env:SystemDrive).KeyProtector # Get the key protector types of the OS Drive [System.String[]]$KeyProtectorTypesOSDrive = $KeyProtectorsOSDrive.keyprotectortype if ($KeyProtectorTypesOSDrive -contains 'TpmPinStartupKey' -and $KeyProtectorTypesOSDrive -contains 'recoveryPassword') { switch (Select-Option -SubCategory -Options 'Yes', 'Skip OS Drive' , 'Exit' -Message "`nThe OS Drive is already encrypted with Enhanced Security level." -ExtraMessage "Are you sure you want to change it to Normal Security level?`n" ) { 'Skip OS Drive' { break OSDriveEncryptionLabel } 'Exit' { break MainSwitchLabel } } } # check if TPM + PIN + recovery password are being used as key protectors for the OS Drive if ($KeyProtectorTypesOSDrive -contains 'Tpmpin' -and $KeyProtectorTypesOSDrive -contains 'recoveryPassword') { Write-ColorfulText -C MintGreen -I 'Bitlocker is already enabled for the OS drive with Normal security level.' Write-ColorfulText -C Fuchsia -I 'Here is your 48-digits recovery password for the OS drive in case you were looking for it:' Write-ColorfulText -C Rainbow -I "$(($KeyProtectorsOSDrive | Where-Object -FilterScript { $_.keyprotectortype -eq 'RecoveryPassword' }).RecoveryPassword)" } else { # If the OS Drive doesn't have recovery password key protector if ($KeyProtectorTypesOSDrive -notcontains 'recoveryPassword') { [System.String]$BitLockerMsg = "`nThe recovery password is missing, adding it now... `n" + "It will be saved in a text file in '$env:SystemDrive\Drive $($env:SystemDrive.remove(1)) recovery password.txt'" Write-Host -Object $BitLockerMsg -ForegroundColor Yellow # Add RecoveryPasswordProtector key protector to the OS drive Add-BitLockerKeyProtector -MountPoint $env:SystemDrive -RecoveryPasswordProtector *> $null # Get the new key protectors of the OS Drive after adding RecoveryPasswordProtector to it [System.Object[]]$KeyProtectorsOSDrive = (Get-BitLockerVolume -MountPoint $env:SystemDrive).KeyProtector # Backup the recovery code of the OS drive in a file New-Item -Path "$env:SystemDrive\Drive $($env:SystemDrive.remove(1)) recovery password.txt" -Value $(&$RecoveryPasswordContentGenerator $KeyProtectorsOSDrive) -ItemType File -Force | Out-Null } # If the OS Drive doesn't have (TPM + PIN) key protector if ($KeyProtectorTypesOSDrive -notcontains 'Tpmpin') { Write-Host -Object "`nTPM and Start up PIN are missing, adding them now..." -ForegroundColor Cyan do { [System.Security.SecureString]$Pin1 = $(Write-ColorfulText -C PinkBold -I "`nEnter a Pin for Bitlocker startup (between 10 to 20 characters)"; Read-Host -AsSecureString) [System.Security.SecureString]$Pin2 = $(Write-ColorfulText -C PinkBold -I 'Confirm your Bitlocker Startup Pin (between 10 to 20 characters)'; Read-Host -AsSecureString) # Compare the PINs and make sure they match [System.Boolean]$TheyMatch = Compare-SecureString -SecureString1 $Pin1 -SecureString2 $Pin2 # If the PINs match and they are at least 10 characters long, max 20 characters if ( $TheyMatch -and ($Pin1.Length -in 10..20) -and ($Pin2.Length -in 10..20) ) { [System.Security.SecureString]$Pin = $Pin1 } else { Write-Host -Object 'Please ensure that the PINs you entered match, and that they are between 10 to 20 characters.' -ForegroundColor red } } # Repeat this process until the entered PINs match and they are at least 10 characters long, max 20 characters until ( $TheyMatch -and ($Pin1.Length -in 10..20) -and ($Pin2.Length -in 10..20) ) try { # Add TPM + PIN key protectors to the OS Drive Add-BitLockerKeyProtector -MountPoint $env:SystemDrive -TpmAndPinProtector -Pin $Pin | Out-Null Write-ColorfulText -C MintGreen -I "`nPINs matched, enabling TPM and startup PIN now`n" } catch { Write-Host -Object 'These errors occurred, run Bitlocker category again after meeting the requirements' -ForegroundColor Red # Display errors in non-terminating way $_ break BitLockerCategoryLabel } # Get the key protectors of the OS Drive [System.Object[]]$KeyProtectorsOSDrive = (Get-BitLockerVolume -MountPoint $env:SystemDrive).KeyProtector # Backup the recovery code of the OS drive in a file just in case - This is for when the disk is automatically encrypted and using TPM + Recovery code by default New-Item -Path "$env:SystemDrive\Drive $($env:SystemDrive.remove(1)) recovery password.txt" -Value $(&$RecoveryPasswordContentGenerator $KeyProtectorsOSDrive) -ItemType File -Force | Out-Null Write-Host -Object "The recovery password was backed up in a text file in '$env:SystemDrive\Drive $($env:SystemDrive.remove(1)) recovery password.txt'" -ForegroundColor Cyan } } } # Do this if Bitlocker is not enabled for the OS drive at all else { Write-Host -Object "`nBitlocker is not enabled for the OS Drive, activating it now..." -ForegroundColor Yellow do { [System.Security.SecureString]$Pin1 = $(Write-ColorfulText -C PinkBold -I 'Enter a Pin for Bitlocker startup (between 10 to 20 characters)'; Read-Host -AsSecureString) [System.Security.SecureString]$Pin2 = $(Write-ColorfulText -C PinkBold -I 'Confirm your Bitlocker Startup Pin (between 10 to 20 characters)'; Read-Host -AsSecureString) [System.Boolean]$TheyMatch = Compare-SecureString -SecureString1 $Pin1 -SecureString2 $Pin2 if ( $TheyMatch -and ($Pin1.Length -in 10..20) -and ($Pin2.Length -in 10..20) ) { [System.Security.SecureString]$Pin = $Pin1 } else { Write-Host -Object 'Please ensure that the PINs you entered match, and that they are between 10 to 20 characters.' -ForegroundColor red } } until ( $TheyMatch -and ($Pin1.Length -in 10..20) -and ($Pin2.Length -in 10..20) ) try { # Enable BitLocker for the OS Drive with TPM + PIN key protectors Enable-BitLocker -MountPoint $env:SystemDrive -EncryptionMethod 'XtsAes256' -Pin $Pin -TpmAndPinProtector -SkipHardwareTest *> $null } catch { Write-Host -Object 'These errors occurred, run Bitlocker category again after meeting the requirements' -ForegroundColor Red $_ break BitLockerCategoryLabel } # Add recovery password key protector to the OS Drive Add-BitLockerKeyProtector -MountPoint $env:SystemDrive -RecoveryPasswordProtector *> $null # Get the new key protectors of the OS Drive after adding RecoveryPasswordProtector to it [System.Object[]]$KeyProtectorsOSDrive = (Get-BitLockerVolume -MountPoint $env:SystemDrive).KeyProtector # Backup the recovery code of the OS drive in a file New-Item -Path "$env:SystemDrive\Drive $($env:SystemDrive.remove(1)) recovery password.txt" -Value $(&$RecoveryPasswordContentGenerator $KeyProtectorsOSDrive) -ItemType File -Force | Out-Null Resume-BitLocker -MountPoint $env:SystemDrive | Out-Null Write-ColorfulText -C MintGreen -I "`nBitlocker is now enabled for the OS drive with Normal security level." Write-Host -Object "The recovery password will be saved in a text file in '$env:SystemDrive\Drive $($env:SystemDrive.remove(1)) recovery password.txt'" -ForegroundColor Cyan } } 'Enhanced: TPM + Startup PIN + Startup Key + Recovery Password' { # check if Bitlocker is enabled for the system drive with Enhanced security level if ((Get-BitLockerVolume -MountPoint $env:SystemDrive).ProtectionStatus -eq 'on') { # Get the OS Drive's encryption method [System.String]$EncryptionMethodOSDrive = (Get-BitLockerVolume -MountPoint $env:SystemDrive).EncryptionMethod # Check OS Drive's encryption method and display a warning if it's not the most secure one if ($EncryptionMethodOSDrive -ine 'XtsAes256') { Write-Warning -Message "The OS Drive is encrypted with the less secure '$EncryptionMethodOSDrive' encryption method instead of 'XtsAes256'" } # Get the key protectors of the OS Drive [System.Object[]]$KeyProtectorsOSDrive = (Get-BitLockerVolume -MountPoint $env:SystemDrive).KeyProtector # Get the key protector types of the OS Drive [System.String[]]$KeyProtectorTypesOSDrive = $KeyProtectorsOSDrive.keyprotectortype # check if TPM + PIN + recovery password are being used as key protectors for the OS Drive if ($KeyProtectorTypesOSDrive -contains 'TpmPinStartupKey' -and $KeyProtectorTypesOSDrive -contains 'recoveryPassword') { Write-ColorfulText -C MintGreen -I 'Bitlocker is already enabled for the OS drive with Enhanced security level.' Write-ColorfulText -C Fuchsia -I 'Here is your 48-digits recovery password for the OS drive in case you were looking for it:' Write-ColorfulText -C Rainbow -I "$(($KeyProtectorsOSDrive | Where-Object -FilterScript { $_.keyprotectortype -eq 'RecoveryPassword' }).RecoveryPassword)" } else { # If the OS Drive doesn't have recovery password key protector if ($KeyProtectorTypesOSDrive -notcontains 'recoveryPassword') { [System.String]$BitLockerMsg = "`nThe recovery password is missing, adding it now... `n" + "It will be saved in a text file in '$env:SystemDrive\Drive $($env:SystemDrive.remove(1)) recovery password.txt'" Write-Host -Object $BitLockerMsg -ForegroundColor Yellow # Add RecoveryPasswordProtector key protector to the OS drive Add-BitLockerKeyProtector -MountPoint $env:SystemDrive -RecoveryPasswordProtector *> $null # Get the new key protectors of the OS Drive after adding RecoveryPasswordProtector to it [System.Object[]]$KeyProtectorsOSDrive = (Get-BitLockerVolume -MountPoint $env:SystemDrive).KeyProtector # Backup the recovery code of the OS drive in a file New-Item -Path "$env:SystemDrive\Drive $($env:SystemDrive.remove(1)) recovery password.txt" -Value $(&$RecoveryPasswordContentGenerator $KeyProtectorsOSDrive) -ItemType File -Force | Out-Null } # If the OS Drive doesn't have (TpmPinStartupKey) key protector if ($KeyProtectorTypesOSDrive -notcontains 'TpmPinStartupKey') { Write-ColorfulText -C Violet -I "`nTpm And Pin And StartupKey Protector is missing from the OS Drive, adding it now" # Check if the OS drive has ExternalKey key protector and if it does remove it # It's the standalone Startup Key protector which isn't secure on its own for the OS Drive if ($KeyProtectorTypesOSDrive -contains 'ExternalKey') { (Get-BitLockerVolume -MountPoint $env:SystemDrive).KeyProtector | Where-Object -FilterScript { $_.keyprotectortype -eq 'ExternalKey' } | ForEach-Object -Process { Remove-BitLockerKeyProtector -MountPoint $env:SystemDrive -KeyProtectorId $_.KeyProtectorId | Out-Null } } do { [System.Security.SecureString]$Pin1 = $(Write-ColorfulText -C PinkBold -I "`nEnter a Pin for Bitlocker startup (between 10 to 20 characters)"; Read-Host -AsSecureString) [System.Security.SecureString]$Pin2 = $(Write-ColorfulText -C PinkBold -I 'Confirm your Bitlocker Startup Pin (between 10 to 20 characters)'; Read-Host -AsSecureString) # Compare the PINs and make sure they match [System.Boolean]$TheyMatch = Compare-SecureString -SecureString1 $Pin1 -SecureString2 $Pin2 # If the PINs match and they are at least 10 characters long, max 20 characters if ( $TheyMatch -and ($Pin1.Length -in 10..20) -and ($Pin2.Length -in 10..20) ) { [System.Security.SecureString]$Pin = $Pin1 } else { Write-Host -Object 'Please ensure that the PINs you entered match, and that they are between 10 to 20 characters.' -ForegroundColor red } } # Repeat this process until the entered PINs match and they are at least 10 characters long, max 20 characters until ( $TheyMatch -and ($Pin1.Length -in 10..20) -and ($Pin2.Length -in 10..20) ) Write-ColorfulText -C MintGreen -I "`nPINs matched, enabling TPM, Startup PIN and Startup Key protector now`n" try { # Add TpmAndPinAndStartupKeyProtector to the OS Drive Add-BitLockerKeyProtector -MountPoint $env:SystemDrive -TpmAndPinAndStartupKeyProtector -StartupKeyPath (Get-AvailableRemovableDrives) -Pin $Pin | Out-Null } catch { Write-Host -Object 'There was a problem adding Startup Key to the removable drive, try ejecting and reinserting the flash drive into your device and run this category again.' -ForegroundColor Red $_ break BitLockerCategoryLabel } # Get the key protectors of the OS Drive [System.Object[]]$KeyProtectorsOSDrive = (Get-BitLockerVolume -MountPoint $env:SystemDrive).KeyProtector # Backup the recovery code of the OS drive in a file just in case - This is for when the disk is automatically encrypted and using TPM + Recovery code by default New-Item -Path "$env:SystemDrive\Drive $($env:SystemDrive.remove(1)) recovery password.txt" -Value $(&$RecoveryPasswordContentGenerator $KeyProtectorsOSDrive) -ItemType File -Force | Out-Null Write-Host -Object "The recovery password was backed up in a text file in '$env:SystemDrive\Drive $($env:SystemDrive.remove(1)) recovery password.txt'" -ForegroundColor Cyan } } } # Do this if Bitlocker is not enabled for the OS drive at all else { Write-Host -Object "`nBitlocker is not enabled for the OS Drive, activating it now..." -ForegroundColor Yellow do { [System.Security.SecureString]$Pin1 = $(Write-ColorfulText -C PinkBold -I "`nEnter a Pin for Bitlocker startup (between 10 to 20 characters)"; Read-Host -AsSecureString) [System.Security.SecureString]$Pin2 = $(Write-ColorfulText -C PinkBold -I 'Confirm your Bitlocker Startup Pin (between 10 to 20 characters)'; Read-Host -AsSecureString) # Compare the PINs and make sure they match [System.Boolean]$TheyMatch = Compare-SecureString -SecureString1 $Pin1 -SecureString2 $Pin2 # If the PINs match and they are at least 10 characters long, max 20 characters if ( $TheyMatch -and ($Pin1.Length -in 10..20) -and ($Pin2.Length -in 10..20) ) { [System.Security.SecureString]$Pin = $Pin1 } else { Write-Host -Object 'Please ensure that the PINs you entered match, and that they are between 10 to 20 characters.' -ForegroundColor red } } # Repeat this process until the entered PINs match and they are at least 10 characters long, max 20 characters until ( $TheyMatch -and ($Pin1.Length -in 10..20) -and ($Pin2.Length -in 10..20) ) Write-ColorfulText -C MintGreen -I "`nPINs matched, enabling TPM, Startup PIN and Startup Key protector now`n" try { # Add TpmAndPinAndStartupKeyProtector to the OS Drive Enable-BitLocker -MountPoint $env:SystemDrive -EncryptionMethod 'XtsAes256' -TpmAndPinAndStartupKeyProtector -StartupKeyPath (Get-AvailableRemovableDrives) -Pin $Pin -SkipHardwareTest *> $null } catch { Write-Host -Object 'There was a problem adding Startup Key to the removable drive, try ejecting and reinserting the flash drive into your device and run this category again.' -ForegroundColor Red $_ break BitLockerCategoryLabel } # Add recovery password key protector to the OS Drive Add-BitLockerKeyProtector -MountPoint $env:SystemDrive -RecoveryPasswordProtector *> $null # Get the new key protectors of the OS Drive after adding RecoveryPasswordProtector to it [System.Object[]]$KeyProtectorsOSDrive = (Get-BitLockerVolume -MountPoint $env:SystemDrive).KeyProtector # Backup the recovery code of the OS drive in a file New-Item -Path "$env:SystemDrive\Drive $($env:SystemDrive.remove(1)) recovery password.txt" -Value $(&$RecoveryPasswordContentGenerator $KeyProtectorsOSDrive) -ItemType File -Force | Out-Null Resume-BitLocker -MountPoint $env:SystemDrive | Out-Null Write-ColorfulText -C MintGreen -I "`nBitlocker is now enabled for the OS drive with Enhanced security level." Write-Host -Object "The recovery password will be saved in a text file in '$env:SystemDrive\Drive $($env:SystemDrive.remove(1)) recovery password.txt'" -ForegroundColor Cyan } } 'Skip encryptions altogether' { break BitLockerCategoryLabel } # Exit the entire BitLocker category, only 'Exit' { break MainSwitchLabel } } # Setting Hibernate file size to full after making sure OS drive is property encrypted for holding hibernate data # Making sure the system is not a VM because Hibernate on VM doesn't work and VMs have other/better options than Hibernation if (-NOT ((Get-MpComputerStatus).IsVirtualMachine)) { # Check to see if Hibernate is already set to full and HiberFileType is set to 2 which is Full, 1 is Reduced try { [System.Int64]$HiberFileType = Get-ItemPropertyValue -Path 'Registry::HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power' -Name 'HiberFileType' -ErrorAction SilentlyContinue } catch { # Do nothing if the key doesn't exist } if ($HiberFileType -ne 2) { Write-Progress -Id 2 -ParentId 0 -Activity 'Hibernate' -Status 'Setting Hibernate file size to full' -PercentComplete 50 # Set Hibernate mode to full &"$env:SystemDrive\Windows\System32\powercfg.exe" /h /type full | Out-Null Write-Progress -Id 2 -Activity 'Setting Hibernate file size to full' -Completed } else { Write-ColorfulText -C Pink -I "`nHibernate is already set to full.`n" } } # If the function is running in unattended mode, skip the rest of the code in this function as they need user interaction if ($RunUnattended) { break BitLockerCategoryLabel } #region Non-OS-BitLocker-Drives-Detection # Get the list of non OS volumes [System.Object[]]$NonOSBitLockerVolumes = Get-BitLockerVolume | Where-Object -FilterScript { $_.volumeType -ne 'OperatingSystem' } # Get all the volumes and filter out removable ones [System.Object[]]$RemovableVolumes = Get-Volume | Where-Object -FilterScript { ($_.DriveType -eq 'Removable') -and $_.DriveLetter } # Check if there is any removable volumes if ($RemovableVolumes) { # Get the letters of all the removable volumes [System.String[]]$RemovableVolumesLetters = foreach ($RemovableVolume in $RemovableVolumes) { $(($RemovableVolume).DriveLetter + ':' ) } # Filter out removable drives from BitLocker volumes to process $NonOSBitLockerVolumes = $NonOSBitLockerVolumes | Where-Object -FilterScript { ($_.MountPoint -notin $RemovableVolumesLetters) } } #endregion Non-OS-BitLocker-Drives-Detection # if there is no non-OS volumes then skip the rest of the code in the BitLocker function if (!$NonOSBitLockerVolumes) { break BitLockerCategoryLabel } # Loop through each non-OS volume and prompt for encryption foreach ($MountPoint in $($NonOSBitLockerVolumes | Sort-Object).MountPoint) { # Prompt for confirmation before encrypting each drive switch (Select-Option -SubCategory -Options 'Yes', 'No', 'Exit' -Message "`nEncrypt $MountPoint drive ?") { 'Yes' { # Check if the non-OS drive that the user selected to be encrypted is not in the middle of any encryption/decryption operation if ((Get-BitLockerVolume -MountPoint $MountPoint).EncryptionPercentage -notin '100', '0') { # Check if the drive isn't already encrypted and locked if ((Get-BitLockerVolume -MountPoint $MountPoint).lockstatus -eq 'Locked') { Write-Host -Object "`nThe drive $MountPoint is already encrypted and locked." -ForegroundColor Magenta break } else { $EncryptionPercentageVar = (Get-BitLockerVolume -MountPoint $MountPoint).EncryptionPercentage Write-Host -Object "`nPlease wait for Bitlocker to finish encrypting or decrypting drive $MountPoint" -ForegroundColor Magenta Write-Host -Object "Drive $MountPoint encryption is currently at $EncryptionPercentageVar percent." -ForegroundColor Magenta break } } # Check to see if Bitlocker is already turned on for the user selected drive # if it is, perform multiple checks on its key protectors if ((Get-BitLockerVolume -MountPoint $MountPoint).ProtectionStatus -eq 'on') { # Get the OS Drive's encryption method [System.String]$EncryptionMethodNonOSDrive = (Get-BitLockerVolume -MountPoint $MountPoint).EncryptionMethod # Check OS Drive's encryption method and display a warning if it's not the most secure one if ($EncryptionMethodNonOSDrive -ine 'XtsAes256') { Write-Warning -Message "Drive $MountPoint is encrypted with the less secure '$EncryptionMethodNonOSDrive' encryption method instead of 'XtsAes256'" } # Get the key protector types of the Non-OS Drive [System.String[]]$KeyProtectorTypesNonOS = (Get-BitLockerVolume -MountPoint $MountPoint).KeyProtector.keyprotectortype # If Recovery Password and Auto Unlock key protectors are available on the drive if ($KeyProtectorTypesNonOS -contains 'RecoveryPassword' -and $KeyProtectorTypesNonOS -contains 'ExternalKey') { # Additional Check 1: if there are more than 1 ExternalKey key protector, try delete all of them and add a new one # The external key protector that is being used to unlock the drive will not be deleted ((Get-BitLockerVolume -MountPoint $MountPoint).KeyProtector | Where-Object -FilterScript { $_.keyprotectortype -eq 'ExternalKey' }).KeyProtectorId | ForEach-Object -Process { # -ErrorAction SilentlyContinue makes sure no error is thrown if the drive only has 1 External key key protector # and it's being used to unlock the drive Remove-BitLockerKeyProtector -MountPoint $MountPoint -KeyProtectorId $_ -ErrorAction SilentlyContinue | Out-Null } # Renew the External key of the selected Non-OS Drive Enable-BitLockerAutoUnlock -MountPoint $MountPoint | Out-Null # Additional Check 2: if there are more than 1 Recovery Password, delete all of them and add a new one [System.String[]]$RecoveryPasswordKeyProtectors = ((Get-BitLockerVolume -MountPoint $MountPoint).KeyProtector | Where-Object -FilterScript { $_.keyprotectortype -eq 'RecoveryPassword' }).KeyProtectorId if ($RecoveryPasswordKeyProtectors.Count -gt 1) { [System.String]$BitLockerMsg = "`nThere are more than 1 recovery password key protector associated with the drive $mountpoint `n" + "Removing all of them and adding a new one. `n" + "It will be saved in a text file in '$($MountPoint)\Drive $($MountPoint.Remove(1)) recovery password.txt'" Write-Host -Object $BitLockerMsg -ForegroundColor Yellow # Remove all of the recovery password key protectors of the selected Non-OS Drive $RecoveryPasswordKeyProtectors | ForEach-Object -Process { Remove-BitLockerKeyProtector -MountPoint $MountPoint -KeyProtectorId $_ | Out-Null } # Add a new Recovery Password key protector after removing all of the previous ones Add-BitLockerKeyProtector -MountPoint $MountPoint -RecoveryPasswordProtector *> $null # Get the new key protectors of the Non-OS Drive after adding RecoveryPasswordProtector to it [System.Object[]]$KeyProtectorsNonOS = (Get-BitLockerVolume -MountPoint $MountPoint).KeyProtector # Backup the recovery code of the Non-OS drive in a file New-Item -Path "$MountPoint\Drive $($MountPoint.Remove(1)) recovery password.txt" -Value $(&$RecoveryPasswordContentGenerator $KeyProtectorsNonOS) -ItemType File -Force | Out-Null } Write-ColorfulText -C MintGreen -I "`nBitlocker is already securely enabled for drive $MountPoint" # Get the new key protectors of the Non-OS Drive after adding RecoveryPasswordProtector to it # Just to simply display it on the console for the user [System.Object[]]$KeyProtectorsNonOS = (Get-BitLockerVolume -MountPoint $MountPoint).KeyProtector Write-ColorfulText -C Fuchsia -I "Here is your 48-digits recovery password for drive $MountPoint in case you were looking for it:" Write-ColorfulText -C Rainbow -I "$(($KeyProtectorsNonOS | Where-Object -FilterScript { $_.keyprotectortype -eq 'RecoveryPassword' }).RecoveryPassword)" } # If the selected drive has Auto Unlock key protector but doesn't have Recovery Password elseif ($KeyProtectorTypesNonOS -contains 'ExternalKey' -and $KeyProtectorTypesNonOS -notcontains 'RecoveryPassword' ) { # if there are more than 1 ExternalKey key protector, try delete all of them and add a new one # The external key protector that is being used to unlock the drive will not be deleted ((Get-BitLockerVolume -MountPoint $MountPoint).KeyProtector | Where-Object -FilterScript { $_.keyprotectortype -eq 'ExternalKey' }).KeyProtectorId | ForEach-Object -Process { # -ErrorAction SilentlyContinue makes sure no error is thrown if the drive only has 1 External key key protector # and it's being used to unlock the drive Remove-BitLockerKeyProtector -MountPoint $MountPoint -KeyProtectorId $_ -ErrorAction SilentlyContinue | Out-Null } # Renew the External key of the selected Non-OS Drive Enable-BitLockerAutoUnlock -MountPoint $MountPoint | Out-Null # Add Recovery Password Key protector and save it to a file inside the drive Add-BitLockerKeyProtector -MountPoint $MountPoint -RecoveryPasswordProtector *> $null # Get the new key protectors of the Non-OS Drive after adding RecoveryPasswordProtector to it [System.Object[]]$KeyProtectorsNonOS = (Get-BitLockerVolume -MountPoint $MountPoint).KeyProtector # Backup the recovery code of the Non-OS drive in a file New-Item -Path "$MountPoint\Drive $($MountPoint.Remove(1)) recovery password.txt" -Value $(&$RecoveryPasswordContentGenerator $KeyProtectorsNonOS) -ItemType File -Force | Out-Null [System.String]$BitLockerMsg = "`nDrive $MountPoint is auto-unlocked but doesn't have Recovery Password, adding it now... `n" + "It will be saved in a text file in '$($MountPoint)\Drive $($MountPoint.Remove(1)) recovery password.txt'" Write-Host -Object $BitLockerMsg -ForegroundColor Cyan } # Check 3: If the selected drive has Recovery Password key protector but doesn't have Auto Unlock enabled elseif ($KeyProtectorTypesNonOS -contains 'RecoveryPassword' -and $KeyProtectorTypesNonOS -notcontains 'ExternalKey') { # Add Auto-unlock (a.k.a ExternalKey key protector to the drive) Enable-BitLockerAutoUnlock -MountPoint $MountPoint | Out-Null # if there are more than 1 Recovery Password, delete all of them and add a new one [System.String[]]$RecoveryPasswordKeyProtectors = ((Get-BitLockerVolume -MountPoint $MountPoint).KeyProtector | Where-Object -FilterScript { $_.keyprotectortype -eq 'RecoveryPassword' }).KeyProtectorId if ($RecoveryPasswordKeyProtectors.Count -gt 1) { [System.String]$BitLockerMsg = "`nThere are more than 1 recovery password key protector associated with the drive $mountpoint `n" + 'Removing all of them and adding a new one.' + "It will be saved in a text file in '$($MountPoint)\Drive $($MountPoint.Remove(1)) recovery password.txt'" Write-Host -Object $BitLockerMsg -ForegroundColor Yellow # Delete all Recovery Passwords because there were more than 1 $RecoveryPasswordKeyProtectors | ForEach-Object -Process { Remove-BitLockerKeyProtector -MountPoint $MountPoint -KeyProtectorId $_ | Out-Null } # Add a new Recovery Password Add-BitLockerKeyProtector -MountPoint $MountPoint -RecoveryPasswordProtector *> $null # Get the new key protectors of the Non-OS Drive after adding RecoveryPasswordProtector to it [System.Object[]]$KeyProtectorsNonOS = (Get-BitLockerVolume -MountPoint $MountPoint).KeyProtector # Backup the recovery code of the Non-OS drive in a file New-Item -Path "$MountPoint\Drive $($MountPoint.Remove(1)) recovery password.txt" -Value $(&$RecoveryPasswordContentGenerator $KeyProtectorsNonOS) -ItemType File -Force | Out-Null } } } # Do this if Bitlocker isn't turned on at all on the user selected drive else { # Enable BitLocker with RecoveryPassword key protector for the selected Non-OS drive Enable-BitLocker -MountPoint $MountPoint -RecoveryPasswordProtector *> $null # Add Auto-unlock (a.k.a ExternalKey key protector to the drive) Enable-BitLockerAutoUnlock -MountPoint $MountPoint | Out-Null # Get the new key protectors of the Non-OS Drive after adding RecoveryPasswordProtector to it [System.Object[]]$KeyProtectorsNonOS = (Get-BitLockerVolume -MountPoint $MountPoint).KeyProtector # Backup the recovery code of the Non-OS drive in a file New-Item -Path "$MountPoint\Drive $($MountPoint.Remove(1)) recovery password.txt" -Value $(&$RecoveryPasswordContentGenerator $KeyProtectorsNonOS) -ItemType File -Force | Out-Null Write-ColorfulText -C MintGreen -I "`nBitLocker has started encrypting drive $MountPoint" Write-Host -Object "Recovery password will be saved in a text file in '$($MountPoint)\Drive $($MountPoint.Remove(1)) recovery password.txt'" -ForegroundColor Cyan } } 'No' { break } 'Exit' { break MainSwitchLabel } } } } 'No' { break BitLockerCategoryLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-TLSSecurity { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🛡️ TLS' Write-Verbose -Message 'Processing the TLS Security category function' :TLSSecurityLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nRun TLS Security category ?")) { 'Yes' { Write-Verbose -Message 'Running the TLS Security category' Write-Progress -Id 0 -Activity 'TLS Security' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) # creating these registry keys that have forward slashes in them @( 'DES 56/56', # DES 56-bit 'RC2 40/128', # RC2 40-bit 'RC2 56/128', # RC2 56-bit 'RC2 128/128', # RC2 128-bit 'RC4 40/128', # RC4 40-bit 'RC4 56/128', # RC4 56-bit 'RC4 64/128', # RC4 64-bit 'RC4 128/128', # RC4 128-bit 'Triple DES 168' # 3DES 168-bit (Triple DES 168) ) | ForEach-Object -Process { [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey([Microsoft.Win32.RegistryHive]::LocalMachine, $env:COMPUTERNAME).CreateSubKey("SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Ciphers\$_") | Out-Null } Write-Verbose -Message 'Applying the TLS Security registry settings' foreach ($Item in $RegistryCSVItems) { if ($Item.category -eq 'TLS') { Edit-Registry -path $Item.Path -key $Item.Key -value $Item.Value -type $Item.Type -Action $Item.Action } } Write-Verbose -Message 'Applying the TLS Security Group Policies' &$LGPOExe /q /m "$WorkingDir\Security-Baselines-X\TLS Security\registry.pol" } 'No' { break TLSSecurityLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-LockScreen { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '💻 Lock Screen' Write-Verbose -Message 'Processing the Lock Screen category function' :LockScreenLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nRun Lock Screen category ?")) { 'Yes' { Write-Verbose -Message 'Running the Lock Screen category' Write-Progress -Id 0 -Activity 'Lock Screen' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) &$LGPOExe /q /m "$WorkingDir\Security-Baselines-X\Lock Screen Policies\registry.pol" &$LGPOExe /q /s "$WorkingDir\Security-Baselines-X\Lock Screen Policies\GptTmpl.inf" # Apply the Don't display last signed-in policy :LockScreenLastSignedInLabel switch ($RunUnattended ? ($LockScreen_NoLastSignedIn ? 'Yes' : 'No') : (Select-Option -SubCategory -Options 'Yes', 'No', 'Exit' -Message "`nDon't display last signed-in on logon screen ?" -ExtraMessage 'Read the GitHub Readme!')) { 'Yes' { Write-Verbose -Message "Applying the Don't display last signed-in policy" &$LGPOExe /q /s "$WorkingDir\Security-Baselines-X\Lock Screen Policies\Don't display last signed-in\GptTmpl.inf" } 'No' { break LockScreenLastSignedInLabel } 'Exit' { break MainSwitchLabel } } # Enable CTRL + ALT + DEL :CtrlAltDelLabel switch ($RunUnattended ? ($LockScreen_CtrlAltDel ? 'Yes' : 'No') : (Select-Option -SubCategory -Options 'Yes', 'No', 'Exit' -Message "`nEnable requiring CTRL + ALT + DEL on lock screen ?")) { 'Yes' { Write-Verbose -Message 'Applying the Enable CTRL + ALT + DEL policy' &$LGPOExe /q /s "$WorkingDir\Security-Baselines-X\Lock Screen Policies\Enable CTRL + ALT + DEL\GptTmpl.inf" } 'No' { break CtrlAltDelLabel } 'Exit' { break MainSwitchLabel } } } 'No' { break LockScreenLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-UserAccountControl { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '💎 UAC' Write-Verbose -Message 'Processing the User Account Control category function' :UACLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nRun User Account Control category ?")) { 'Yes' { Write-Verbose -Message 'Running the User Account Control category' Write-Progress -Id 0 -Activity 'User Account Control' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) &$LGPOExe /q /s "$WorkingDir\Security-Baselines-X\User Account Control UAC Policies\GptTmpl.inf" # Apply the Hide the entry points for Fast User Switching policy :FastUserSwitchingLabel switch ($RunUnattended ? ($UAC_NoFastSwitching ? 'Yes' : 'No') : (Select-Option -SubCategory -Options 'Yes', 'No', 'Exit' -Message "`nHide the entry points for Fast User Switching ?" -ExtraMessage 'Read the GitHub Readme!')) { 'Yes' { Write-Verbose -Message 'Applying the Hide the entry points for Fast User Switching policy' &$LGPOExe /q /m "$WorkingDir\Security-Baselines-X\User Account Control UAC Policies\Hides the entry points for Fast User Switching\registry.pol" } 'No' { break FastUserSwitchingLabel } 'Exit' { break MainSwitchLabel } } # Apply the Only elevate executables that are signed and validated policy :ElevateSignedExeLabel switch ($RunUnattended ? ($UAC_OnlyElevateSigned ? 'Yes' : 'No') : (Select-Option -SubCategory -Options 'Yes', 'No', 'Exit' -Message "`nOnly elevate executables that are signed and validated ?" -ExtraMessage 'Read the GitHub Readme!')) { 'Yes' { Write-Verbose -Message 'Applying the Only elevate executables that are signed and validated policy' &$LGPOExe /q /s "$WorkingDir\Security-Baselines-X\User Account Control UAC Policies\Only elevate executables that are signed and validated\GptTmpl.inf" } 'No' { break ElevateSignedExeLabel } 'Exit' { break MainSwitchLabel } } } 'No' { break UACLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-WindowsFirewall { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🔥 Firewall' Write-Verbose -Message 'Processing the Windows Firewall category function' :WindowsFirewallLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nRun Windows Firewall category ?")) { 'Yes' { Write-Verbose -Message 'Running the Windows Firewall category' Write-Progress -Id 0 -Activity 'Windows Firewall' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) &$LGPOExe /q /m "$WorkingDir\Security-Baselines-X\Windows Firewall Policies\registry.pol" Write-Verbose -Message 'Disabling Multicast DNS (mDNS) UDP-in Firewall Rules for all 3 Firewall profiles - disables only 3 rules' Get-NetFirewallRule | Where-Object -FilterScript { ($_.RuleGroup -eq '@%SystemRoot%\system32\firewallapi.dll,-37302') -and ($_.Direction -eq 'inbound') } | ForEach-Object -Process { Disable-NetFirewallRule -DisplayName $_.DisplayName } } 'No' { break WindowsFirewallLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-OptionalWindowsFeatures { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🏅 Optional Features' Write-Verbose -Message 'Processing the Optional Windows Features category function' :OptionalFeaturesLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nRun Optional Windows Features category ?")) { 'Yes' { Write-Verbose -Message 'Running the Optional Windows Features category' Write-Progress -Id 0 -Activity 'Optional Windows Features' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) # PowerShell Core (only if installed from Microsoft Store) has problem with these commands: https://github.com/PowerShell/PowerShell/issues/13866#issuecomment-1519066710 if ($PSHome -like "*$env:SystemDrive\Program Files\WindowsApps\Microsoft.PowerShell*") { Write-Verbose -Message 'Importing DISM module to be able to run DISM commands in PowerShell Core installed from MSFT Store' Import-Module -Name 'DISM' -UseWindowsPowerShell -Force -WarningAction SilentlyContinue } Edit-Addons -Type Feature -FeatureAction Disabling -FeatureName 'MicrosoftWindowsPowerShellV2' Edit-Addons -Type Feature -FeatureAction Disabling -FeatureName 'MicrosoftWindowsPowerShellV2Root' Edit-Addons -Type Feature -FeatureAction Disabling -FeatureName 'WorkFolders-Client' Edit-Addons -Type Feature -FeatureAction Disabling -FeatureName 'Printing-Foundation-Features' Edit-Addons -Type Feature -FeatureAction Disabling -FeatureName 'Windows-Defender-ApplicationGuard' Edit-Addons -Type Feature -FeatureAction Enabling -FeatureName 'Containers-DisposableClientVM' Edit-Addons -Type Feature -FeatureAction Enabling -FeatureName 'Microsoft-Hyper-V' Edit-Addons -Type Feature -FeatureAction Enabling -FeatureName 'VirtualMachinePlatform' Edit-Addons -Type Capability -CapabilityName 'Media.WindowsMediaPlayer' Edit-Addons -Type Capability -CapabilityName 'Browser.InternetExplorer' Edit-Addons -Type Capability -CapabilityName 'wmic' Edit-Addons -Type Capability -CapabilityName 'Microsoft.Windows.Notepad.System' Edit-Addons -Type Capability -CapabilityName 'Microsoft.Windows.WordPad' Edit-Addons -Type Capability -CapabilityName 'Microsoft.Windows.PowerShell.ISE' Edit-Addons -Type Capability -CapabilityName 'App.StepsRecorder' # Uninstall VBScript that is now uninstallable as an optional features since Windows 11 insider Dev build 25309 - Won't do anything in other builds if (Get-WindowsCapability -Online | Where-Object -FilterScript { $_.Name -like '*VBSCRIPT*' }) { try { Write-ColorfulText -Color Lavender -InputText "`nUninstalling VBSCRIPT" Get-WindowsCapability -Online | Where-Object -FilterScript { $_.Name -like '*VBSCRIPT*' } | Remove-WindowsCapability -Online # Shows the successful message only if removal process was successful Write-ColorfulText -Color NeonGreen -InputText 'VBSCRIPT has been uninstalled' } catch { # show errors in non-terminating way $_ } } } 'No' { break OptionalFeaturesLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-WindowsNetworking { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '📶 Networking' Write-Verbose -Message 'Processing the Windows Networking category function' :WindowsNetworkingLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nRun Windows Networking category ?")) { 'Yes' { Write-Verbose -Message 'Running the Windows Networking category' Write-Progress -Id 0 -Activity 'Windows Networking' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) &$LGPOExe /q /m "$WorkingDir\Security-Baselines-X\Windows Networking Policies\registry.pol" &$LGPOExe /q /s "$WorkingDir\Security-Baselines-X\Windows Networking Policies\GptTmpl.inf" Write-Verbose -Message 'Disabling LMHOSTS lookup protocol on all network adapters' Edit-Registry -path 'Registry::HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NetBT\Parameters' -key 'EnableLMHOSTS' -value '0' -type 'DWORD' -Action 'AddOrModify' Write-Verbose -Message 'Setting the Network Location of all connections to Public' Get-NetConnectionProfile | Set-NetConnectionProfile -NetworkCategory Public } 'No' { break WindowsNetworkingLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-MiscellaneousConfigurations { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🥌 Miscellaneous' Write-Verbose -Message 'Processing the Miscellaneous Configurations category function' :MiscellaneousLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nRun Miscellaneous Configurations category ?")) { 'Yes' { Write-Verbose -Message 'Running the Miscellaneous Configurations category' Write-Progress -Id 0 -Activity 'Miscellaneous Configurations' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) Write-Verbose -Message 'Applying the Miscellaneous Configurations registry settings' foreach ($Item in $RegistryCSVItems) { if ($Item.category -eq 'Miscellaneous') { Edit-Registry -path $Item.Path -key $Item.Key -value $Item.Value -type $Item.Type -Action $Item.Action } } &$LGPOExe /q /m "$WorkingDir\Security-Baselines-X\Miscellaneous Policies\registry.pol" &$LGPOExe /q /s "$WorkingDir\Security-Baselines-X\Miscellaneous Policies\GptTmpl.inf" Write-Verbose -Message 'Adding all Windows users to the "Hyper-V Administrators" security group to be able to use Hyper-V and Windows Sandbox' Get-LocalUser | Where-Object -FilterScript { $_.enabled -eq 'True' } | ForEach-Object -Process { Add-LocalGroupMember -SID 'S-1-5-32-578' -Member "$($_.SID)" -ErrorAction SilentlyContinue } # Makes sure auditing for the "Other Logon/Logoff Events" subcategory under the Logon/Logoff category is enabled, doesn't touch affect any other sub-category # For tracking Lock screen unlocks and locks # auditpol /set /subcategory:"Other Logon/Logoff Events" /success:enable /failure:enable # Using GUID Write-Verbose -Message 'Enabling auditing for the "Other Logon/Logoff Events" subcategory under the Logon/Logoff category' auditpol /set /subcategory:"{0CCE921C-69AE-11D9-BED3-505054503030}" /success:enable /failure:enable | Out-Null # Query all Audits status # auditpol /get /category:* # Get the list of subcategories and their associated GUIDs # auditpol /list /subcategory:* /r # Event Viewer custom views are saved in "$env:SystemDrive\ProgramData\Microsoft\Event Viewer\Views". files in there can be backed up and restored on new Windows installations. if (Test-Path -Path "$env:SystemDrive\ProgramData\Microsoft\Event Viewer\Views\Hardening Script") { Remove-Item -Path "$env:SystemDrive\ProgramData\Microsoft\Event Viewer\Views\Hardening Script" -Recurse -Force } Write-Verbose -Message 'Creating new sub-folder automatically and importing the custom views of the event viewer' Expand-Archive -Path "$WorkingDir\EventViewerCustomViews.zip" -DestinationPath "$env:SystemDrive\ProgramData\Microsoft\Event Viewer\Views\Hardening Script" -Force } 'No' { break MiscellaneousLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-WindowsUpdateConfigurations { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🪟 Windows Update' Write-Verbose -Message 'Processing the Windows Update category function' :WindowsUpdateLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nApply Windows Update Policies ?")) { 'Yes' { Write-Verbose -Message 'Running the Windows Update category' Write-Progress -Id 0 -Activity 'Windows Update Configurations' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) Write-Verbose -Message 'Enabling restart notification for Windows update' Edit-Registry -path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsUpdate\UX\Settings' -key 'RestartNotificationsAllowed2' -value '1' -type 'DWORD' -Action 'AddOrModify' Write-Verbose -Message 'Applying the Windows Update Group Policies' &$LGPOExe /q /m "$WorkingDir\Security-Baselines-X\Windows Update Policies\registry.pol" } 'No' { break WindowsUpdateLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-EdgeBrowserConfigurations { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🦔 Edge' Write-Verbose -Message 'Processing the Edge Browser category function' :MSEdgeLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nApply Edge Browser Configurations ?")) { 'Yes' { Write-Verbose -Message 'Running the Edge Browser category' Write-Progress -Id 0 -Activity 'Edge Browser Configurations' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) Write-Verbose -Message 'Applying the Edge Browser registry settings' foreach ($Item in $RegistryCSVItems) { if ($Item.category -eq 'Edge') { Edit-Registry -path $Item.Path -key $Item.Key -value $Item.Value -type $Item.Type -Action $Item.Action } } } 'No' { break MSEdgeLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-CertificateCheckingCommands { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🎟️ Certificates' Write-Verbose -Message 'Processing the Certificate Checking category function' :CertCheckingLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nRun Certificate Checking category ?")) { 'Yes' { Write-Verbose -Message 'Running the Certificate Checking category' Write-Progress -Id 0 -Activity 'Certificate Checking Commands' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) try { Write-Verbose -Message 'Downloading sigcheck64.exe from https://live.sysinternals.com' Invoke-WebRequest -Uri 'https://live.sysinternals.com/sigcheck64.exe' -OutFile 'sigcheck64.exe' } catch { Write-Error -Message 'sigcheck64.exe could not be downloaded from https://live.sysinternals.com' -ErrorAction Continue break CertCheckingLabel } Write-Host -NoNewline -Object "`nListing valid certificates not rooted to the Microsoft Certificate Trust List in the" -ForegroundColor Yellow; Write-Host -Object " Current User store`n" -ForegroundColor cyan .\sigcheck64.exe -tuv -accepteula -nobanner Write-Host -NoNewline -Object "`nListing valid certificates not rooted to the Microsoft Certificate Trust List in the" -ForegroundColor Yellow; Write-Host -Object " Local Machine Store`n" -ForegroundColor Blue .\sigcheck64.exe -tv -accepteula -nobanner # Remove the downloaded sigcheck64.exe after using it Remove-Item -Path .\sigcheck64.exe -Force } 'No' { break CertCheckingLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-CountryIPBlocking { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🧾 Country IPs' Write-Verbose -Message 'Processing the Country IP Blocking category function' :IPBlockingLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nRun Country IP Blocking category ?")) { 'Yes' { Write-Verbose -Message 'Running the Country IP Blocking category' Write-Progress -Id 0 -Activity 'Country IP Blocking' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) :IPBlockingTerrLabel switch ($RunUnattended ? 'Yes' : (Select-Option -SubCategory -Options 'Yes', 'No' -Message 'Add countries in the State Sponsors of Terrorism list to the Firewall block list?')) { 'Yes' { Write-Verbose -Message 'Blocking IP ranges of countries in State Sponsors of Terrorism list' Block-CountryIP -IPList (Invoke-RestMethod -Uri 'https://raw.githubusercontent.com/HotCakeX/Official-IANA-IP-blocks/main/Curated-Lists/StateSponsorsOfTerrorism.txt') -ListName 'State Sponsors of Terrorism' } 'No' { break IPBlockingTerrLabel } } :IPBlockingOFACLabel switch ($RunUnattended ? ($CountryIPBlocking_OFAC ? 'Yes' : 'No') : (Select-Option -SubCategory -Options 'Yes', 'No' -Message 'Add OFAC Sanctioned Countries to the Firewall block list?')) { 'Yes' { Write-Verbose -Message 'Blocking IP ranges of countries in OFAC sanction list' Block-CountryIP -IPList (Invoke-RestMethod -Uri 'https://raw.githubusercontent.com/HotCakeX/Official-IANA-IP-blocks/main/Curated-Lists/OFACSanctioned.txt') -ListName 'OFAC Sanctioned Countries' } 'No' { break IPBlockingOFACLabel } } } 'No' { break IPBlockingLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-DownloadsDefenseMeasures { param([System.Management.Automation.SwitchParameter]$RunUnattended) if (!$IsAdmin) { return } $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🎇 Downloads Defense Measures' Write-Verbose -Message 'Processing the Downloads Defense Measures category function' :DownloadsDefenseMeasuresLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nRun Downloads Defense Measures category ?")) { 'Yes' { Write-Verbose -Message 'Running the Downloads Defense Measures category' Write-Progress -Id 0 -Activity 'Downloads Defense Measures' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) if (-NOT (Get-InstalledModule -Name 'WDACConfig' -ErrorAction SilentlyContinue -Verbose:$false)) { Write-Verbose -Message 'Installing WDACConfig module because it is not installed' Install-Module -Name 'WDACConfig' -Force -Verbose:$false } Write-Verbose -Message 'Getting the currently deployed base policy names' [System.String[]]$CurrentBasePolicyNames = ((&"$env:SystemDrive\Windows\System32\CiTool.exe" -lp -json | ConvertFrom-Json).Policies | Where-Object -FilterScript { ($_.IsSystemPolicy -ne 'True') -and ($_.PolicyID -eq $_.BasePolicyID) }).FriendlyName # Only deploy the Downloads-Defense-Measures policy if it is not already deployed if ('Downloads-Defense-Measures' -notin $CurrentBasePolicyNames) { Write-Verbose -Message 'Detecting the Downloads folder path on system' [System.IO.FileInfo]$DownloadsPathSystem = (New-Object -ComObject Shell.Application).NameSpace('shell:Downloads').Self.path Write-Verbose -Message "The Downloads folder path on system is $DownloadsPathSystem" # Getting the current user's name [System.Security.Principal.SecurityIdentifier]$UserSID = [System.Security.Principal.WindowsIdentity]::GetCurrent().user.value [System.String]$UserName = (Get-LocalUser | Where-Object -FilterScript { $_.SID -eq $UserSID }).name # Checking if the Edge preferences file exists if (Test-Path -Path "$env:SystemDrive\Users\$UserName\AppData\Local\Microsoft\Edge\User Data\Default\Preferences") { Write-Verbose -Message 'Detecting the Downloads path in Edge' [PSCustomObject]$CurrentUserEdgePreference = ConvertFrom-Json -InputObject (Get-Content -Raw -Path "$env:SystemDrive\Users\$UserName\AppData\Local\Microsoft\Edge\User Data\Default\Preferences") [System.IO.FileInfo]$DownloadsPathEdge = $CurrentUserEdgePreference.savefile.default_directory # Ensure there is an Edge browser profile and it was initialized if ((-NOT [System.String]::IsNullOrWhitespace($DownloadsPathEdge.FullName))) { Write-Verbose -Message "The Downloads path in Edge is $DownloadsPathEdge" # Display a warning for now if ($DownloadsPathEdge.FullName -ne $DownloadsPathSystem.FullName) { Write-Warning -Message "The Downloads path in Edge ($($DownloadsPathEdge.FullName)) is different than the system's Downloads path ($($DownloadsPathSystem.FullName))" } } } Write-Verbose -Message 'Creating and deploying the Downloads-Defense-Measures policy' New-DenyWDACConfig -PathWildCards -PolicyName 'Downloads-Defense-Measures' -FolderPath "$DownloadsPathSystem\*" -Deploy -Verbose:$Verbose -SkipVersionCheck } else { Write-Verbose -Message 'The Downloads-Defense-Measures policy is already deployed' } } 'No' { break DownloadsDefenseMeasuresLabel } 'Exit' { break MainSwitchLabel } } } Function Invoke-NonAdminCommands { param([System.Management.Automation.SwitchParameter]$RunUnattended) $RefCurrentMainStep.Value++ $Host.UI.RawUI.WindowTitle = '🏷️ Non-Admins' Write-Verbose -Message 'Processing the Non-Admin category function' :NonAdminLabel switch ($RunUnattended ? 'Yes' : (Select-Option -Options 'Yes', 'No', 'Exit' -Message "`nRun Non-Admin category ?")) { 'Yes' { Write-Verbose -Message 'Running the Non-Admin category' Write-Progress -Id 0 -Activity 'Non-Admin category' -Status "Step $($RefCurrentMainStep.Value)/$TotalMainSteps" -PercentComplete ($RefCurrentMainStep.Value / $TotalMainSteps * 100) Write-Verbose -Message 'Applying the Non-Admin registry settings' foreach ($Item in $RegistryCSVItems) { if ($Item.category -eq 'NonAdmin') { Edit-Registry -path $Item.Path -key $Item.Key -value $Item.Value -type $Item.Type -Action $Item.Action } } # Only suggest restarting the device if Admin related categories were run and the code was not running in unattended mode if (!$Categories -and $IsAdmin) { Write-Host -Object "`r`n" Write-ColorfulText -C Rainbow -I "################################################################################################`r`n" Write-ColorfulText -C MintGreen -I "### Please Restart your device to completely apply the security measures and Group Policies ###`r`n" Write-ColorfulText -C Rainbow -I "################################################################################################`r`n" } } 'No' { break NonAdminLabel } 'Exit' { break MainSwitchLabel } } } #Endregion Hardening-Categories-Functions # a label to break out of the main switch statements and run the finally block when user chooses to exit :MainSwitchLabel switch ($Categories) { 'WindowsBootManagerRevocations' { Invoke-WindowsBootManagerRevocations -RunUnattended } 'MicrosoftSecurityBaselines' { Invoke-MicrosoftSecurityBaselines -RunUnattended } 'Microsoft365AppsSecurityBaselines' { Invoke-Microsoft365AppsSecurityBaselines -RunUnattended } 'MicrosoftDefender' { Invoke-MicrosoftDefender -RunUnattended } 'AttackSurfaceReductionRules' { Invoke-AttackSurfaceReductionRules -RunUnattended } 'BitLockerSettings' { Invoke-BitLockerSettings -RunUnattended } 'TLSSecurity' { Invoke-TLSSecurity -RunUnattended } 'LockScreen' { Invoke-LockScreen -RunUnattended } 'UserAccountControl' { Invoke-UserAccountControl -RunUnattended } 'WindowsFirewall' { Invoke-WindowsFirewall -RunUnattended } 'OptionalWindowsFeatures' { Invoke-OptionalWindowsFeatures -RunUnattended } 'WindowsNetworking' { Invoke-WindowsNetworking -RunUnattended } 'MiscellaneousConfigurations' { Invoke-MiscellaneousConfigurations -RunUnattended } 'WindowsUpdateConfigurations' { Invoke-WindowsUpdateConfigurations -RunUnattended } 'EdgeBrowserConfigurations' { Invoke-EdgeBrowserConfigurations -RunUnattended } 'CertificateCheckingCommands' { Invoke-CertificateCheckingCommands -RunUnattended } 'CountryIPBlocking' { Invoke-CountryIPBlocking -RunUnattended } 'DownloadsDefenseMeasures' { Invoke-DownloadsDefenseMeasures -RunUnattended } 'NonAdminCommands' { Invoke-NonAdminCommands -RunUnattended } default { # Get the values of the ValidateSet attribute of the Categories parameter of the main function [Categoriex]::new().GetValidValues() | ForEach-Object -Process { # Run all of the categories' functions if the user didn't specify any . "Invoke-$_" } } } # No code should be placed after this. } catch { # Throw whatever error that occurred Throw $_ } finally { Write-Verbose -Message 'Finally block is running' if ($IsAdmin) { Write-Verbose -Message 'Reverting the PowerShell executables and powercfg.exe allow listings in Controlled folder access' foreach ($FilePath in (((Get-ChildItem -Path "$PSHOME\*.exe" -File).FullName) + "$env:SystemDrive\Windows\System32\powercfg.exe")) { Remove-MpPreference -ControlledFolderAccessAllowedApplications $FilePath } # restoring the original Controlled folder access allow list - if user already had added PowerShell executables to the list # they will be restored as well, so user customization will remain intact if ($null -ne $CFAAllowedAppsBackup) { Set-MpPreference -ControlledFolderAccessAllowedApplications $CFAAllowedAppsBackup } } if (Test-Path -Path $WorkingDir) { Write-Verbose -Message 'Removing the working directory' Remove-Item -Recurse -Path $WorkingDir -Force } Write-Verbose -Message 'Disabling progress bars' 0..2 | ForEach-Object -Process { Write-Progress -Id $_ -Activity 'Done' -Completed } Write-Verbose -Message 'Restoring the title of the PowerShell back to what it was prior to running the script/module' $Host.UI.RawUI.WindowTitle = $CurrentPowerShellTitle Write-Verbose -Message 'Setting the execution policy back to what it was prior to running the script/module' Set-ExecutionPolicy -ExecutionPolicy "$CurrentExecutionPolicy" -Scope 'Process' -Force if ($Log) { Write-Verbose -Message 'Stopping the stopwatch' $StopWatch.Stop() Write-Verbose -Message "Protect-WindowsSecurity completed in $($StopWatch.Elapsed.Hours) Hours - $($StopWatch.Elapsed.Minutes) Minutes - $($StopWatch.Elapsed.Seconds) Seconds - $($StopWatch.Elapsed.Milliseconds) Milliseconds - $($StopWatch.Elapsed.Microseconds) Microseconds - $($StopWatch.Elapsed.Nanoseconds) Nanoseconds" Write-Verbose -Message 'Stopping the transcription' Stop-Transcript } } } <# .SYNOPSIS Applies the hardening measures described in the GitHub readme. .LINK https://github.com/HotCakeX/Harden-Windows-Security .DESCRIPTION Applies the hardening measures on a Windows client OS. You can run this cmdlet in interactive or headless/unattended mode. In interactive mode, you will be prompted for confirmation before applying each category and sub-category. In headless/unattended mode, you can specify which categories to apply without the need for user interaction. When running in headless/unattended mode, you can control the sub-categories of each category by using the following switch parameters: SecBaselines_NoOverrides -> Applies the Microsoft Security Baselines without the optional overrides MSFTDefender_SAC -> Enables Smart App Control MSFTDefender_NoDiagData -> Will not enable optional diagnostics data required for Smart App Control (Does not have any effect if Smart App Control is already turned on) MSFTDefender_NoScheduledTask -> Will not create scheduled task for fast MSFT driver block rules update MSFTDefender_BetaChannels -> Set Defender Engine and Intelligence update channels to beta LockScreen_CtrlAltDel -> Require CTRL + ALT + Delete at lock screen LockScreen_NoLastSignedIn -> Will not display the last signed in user at the lock screen UAC_NoFastSwitching -> Hide entry points for fast user switching UAC_OnlyElevateSigned -> Only elevate signed and validated executables CountryIPBlocking_OFAC -> Include the IP ranges of OFAC Sanctioned Countries in the firewall block rules Each of the switch parameters above will be dynamically generated based on the categories you choose. For example, if you choose to run the Microsoft Security Baselines category, the SecBaselines_NoOverrides switch parameter will be generated and you can use it to apply the Microsoft Security Baselines without the optional overrides. .COMPONENT PowerShell .FUNCTIONALITY Applies the hardening measures described in the GitHub readme. .PARAMETER Categories The hardening categories to implement. Use this to selectively apply certain categories. Use this parameter when executing the Protect-WindowsSecurity in silent/headless mode to automatically apply any categories you desire without user intervention. If not specified, there will be requests for confirmation before running each category. .PARAMETER Verbose Activates elaborate messages by displaying extensive information about the actions of the Protect-WindowsSecurity cmdlet. .PARAMETER Log Activates comprehensive logging by recording all the information shown on the screen and some additional data to a text file. It is strongly advised to use the -Verbose parameter when you want to enable logging. .PARAMETER LogPath The path to save the log file to. If not specified, the log file will be saved in the current working directory. .PARAMETER Offline Indicates that the module is being run in offline mode. Will not download any files from the internet. Using this parameter will make the following 3 parameters mandatory: PathToLGPO, PathToMSFTSecurityBaselines and PathToMSFT365AppsSecurityBaselines. .PARAMETER PathToLGPO The path to the 'LGPO.zip'. Make sure it's in the zip format just like it's downloaded from the Microsoft servers. File name can be anything. The parameter has argument completer so you can press tab and use the file picker GUI to select the zip file. .PARAMETER PathToMSFTSecurityBaselines The path to the 'Windows 11 v23H2 Security Baseline.zip'. Make sure it's in the zip format just like it's downloaded from the Microsoft servers. File name can be anything. The parameter has argument completer so you can press tab and use the file picker GUI to select the zip file. .PARAMETER PathToMSFT365AppsSecurityBaselines The path to the 'Microsoft 365 Apps for Enterprise 2306.zip'. Make sure it's in the zip format just like it's downloaded from the Microsoft servers. File name can be anything. The parameter has argument completer so you can press tab and use the file picker GUI to select the zip file. .NOTES It is highly recommended to always include the Microsoft Security Baselines category and place it first as it forms the foundation of all subsequent categories. .EXAMPLE Protect-WindowsSecurity -Categories 'MicrosoftSecurityBaselines', 'MicrosoftDefender', 'AttackSurfaceReductionRules' This example will apply the Microsoft Security Baselines, Microsoft Defender and Attack Surface Reduction Rules categories without the need for user interaction. .EXAMPLE Protect-WindowsSecurity -Categories MicrosoftDefender -MSFTDefender_SAC -Verbose This example will apply the Microsoft Defender category with the Smart App Control sub-category, without the need for user interaction, and will show verbose messages. .EXAMPLE Protect-WindowsSecurity This example will run the cmdlet in interactive mode and will prompt for confirmation before running each category and sub-category. .EXAMPLE Protect-WindowsSecurity -Verbose -Offline -PathToLGPO 'C:\Users\Admin\Desktop\LGPO.zip' -PathToMSFTSecurityBaselines 'C:\Users\Admin\Desktop\Baselines.zip' -PathToMSFT365AppsSecurityBaselines 'C:\Users\Admin\Desktop\M365Baselines.zip' -Log -Categories MicrosoftSecurityBaselines,MicrosoftDefender -MSFTDefender_SAC This example instructs the cmdlet to run in offline mode and will not download any files from the internet. It also runs it in headless/silent mode by specifying which categories to automatically run. -MSFTDefender_SAC switch is used so the Smart App Control sub-category is also applied in the headless/silent mode. -Log switch is mentioned which will save the output of the cmdlet to a text file in the current working directory. .INPUTS System.String[] System.IO.FileInfo System.Management.Automation.SwitchParameter .OUTPUTS System.String #> } |