Edit-WDACConfig.psm1
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#Requires -RunAsAdministrator function Edit-WDACConfig { [CmdletBinding( DefaultParameterSetName = "Allow New Apps Audit Events", SupportsShouldProcess = $true, PositionalBinding = $false, ConfirmImpact = 'High' )] Param( [Alias("E")] [Parameter(Mandatory = $false, ParameterSetName = "Allow New Apps Audit Events")][Switch]$AllowNewAppsAuditEvents, [Alias("A")] [Parameter(Mandatory = $false, ParameterSetName = "Allow New Apps")][Switch]$AllowNewApps, [Alias("M")] [Parameter(Mandatory = $false, ParameterSetName = "Merge Supplemental Policies")][Switch]$MergeSupplementalPolicies, [Alias("U")] [Parameter(Mandatory = $false, ParameterSetName = "Update Base Policy")][Switch]$UpdateBasePolicy, [ValidatePattern('^[a-zA-Z0-9 ]+$', ErrorMessage = "The Supplemental Policy Name can only contain alphanumeric characters.")] [Parameter(Mandatory = $true, ParameterSetName = "Allow New Apps Audit Events", ValueFromPipelineByPropertyName = $true)] [Parameter(Mandatory = $true, ParameterSetName = "Allow New Apps", ValueFromPipelineByPropertyName = $true)] [Parameter(Mandatory = $true, ParameterSetName = "Merge Supplemental Policies", ValueFromPipelineByPropertyName = $true)] [System.String]$SuppPolicyName, [ValidatePattern('\.xml$')] [ValidateScript({ # Validate each Policy file in PolicyPaths parameter to make sure the user isn't accidentally trying to # Edit a Signed policy using Edit-WDACConfig cmdlet which is only made for Unsigned policies $_ | ForEach-Object { $xmlTest = [xml](Get-Content $_) $RedFlag1 = $xmlTest.SiPolicy.SupplementalPolicySigners.SupplementalPolicySigner.SignerId $RedFlag2 = $xmlTest.SiPolicy.UpdatePolicySigners.UpdatePolicySigner.SignerId if (!$RedFlag1 -or !$RedFlag2) { return $True } } }, ErrorMessage = "The policy XML file(s) you chose are Signed policies. Please use Edit-SignedWDACConfig cmdlet to edit Signed policies.")] [Parameter(Mandatory = $true, ParameterSetName = "Allow New Apps Audit Events", ValueFromPipelineByPropertyName = $true)] [Parameter(Mandatory = $true, ParameterSetName = "Allow New Apps", ValueFromPipelineByPropertyName = $true)] [Parameter(Mandatory = $true, ParameterSetName = "Merge Supplemental Policies", ValueFromPipelineByPropertyName = $true)] [System.String[]]$PolicyPaths, [ValidatePattern('\.xml$')] [ValidateScript({ Test-Path $_ -PathType 'Leaf' }, ErrorMessage = "The path you selected is not a file path.")] [Parameter(Mandatory = $true, ParameterSetName = "Merge Supplemental Policies", ValueFromPipelineByPropertyName = $true)] [System.String[]]$SuppPolicyPaths, [Parameter(Mandatory = $false, ParameterSetName = "Merge Supplemental Policies")] [switch]$KeepOldSupplementalPolicies, [ValidateSet([Levelz])] [parameter(Mandatory = $false, ParameterSetName = "Allow New Apps Audit Events")] [parameter(Mandatory = $false, ParameterSetName = "Allow New Apps")] [System.String]$Level = "FilePublisher", # Setting the default value for the Level parameter [ValidateSet([Fallbackz])] [parameter(Mandatory = $false, ParameterSetName = "Allow New Apps Audit Events")] [parameter(Mandatory = $false, ParameterSetName = "Allow New Apps")] [System.String[]]$Fallbacks = "Hash", # Setting the default value for the Fallbacks parameter [parameter(Mandatory = $false, ParameterSetName = "Allow New Apps Audit Events")] [parameter(Mandatory = $false, ParameterSetName = "Allow New Apps")] [Switch]$NoScript, [parameter(Mandatory = $false, ParameterSetName = "Allow New Apps Audit Events")] [parameter(Mandatory = $false, ParameterSetName = "Allow New Apps")] [Switch]$NoUserPEs, [parameter(Mandatory = $false, ParameterSetName = "Allow New Apps Audit Events")] [parameter(Mandatory = $false, ParameterSetName = "Allow New Apps")] [Switch]$AllowFileNameFallbacks, [ValidateSet("OriginalFileName", "InternalName", "FileDescription", "ProductName", "PackageFamilyName", "FilePath")] [parameter(Mandatory = $false, ParameterSetName = "Allow New Apps Audit Events")] [parameter(Mandatory = $false, ParameterSetName = "Allow New Apps")] [System.String]$SpecificFileNameLevel, # Setting the maxim range to the maximum allowed log size by Windows Event viewer [ValidateRange(1024KB, 18014398509481983KB)] [Parameter(Mandatory = $false, ParameterSetName = "Allow New Apps Audit Events")] [System.Int64]$LogSize, [parameter(Mandatory = $false, ParameterSetName = "Allow New Apps Audit Events")][Switch]$IncludeDeletedFiles, [ValidateSet([BasePolicyNamez])] [Parameter(Mandatory = $true, ParameterSetName = "Update Base Policy")][System.String[]]$CurrentBasePolicyName, [ValidateSet("AllowMicrosoft_Plus_Block_Rules", "Lightly_Managed_system_Policy", "DefaultWindows_WithBlockRules")] [Parameter(Mandatory = $true, ParameterSetName = "Update Base Policy")][System.String]$NewBasePolicyType, [Parameter(Mandatory = $false, ParameterSetName = "Update Base Policy")][Switch]$RequireEVSigners, [Parameter(Mandatory = $false)][Switch]$SkipVersionCheck ) begin { # Importing resources such as functions by dot-sourcing so that they will run in the same scope and their variables will be usable . "$psscriptroot\Resources.ps1" # Detecting if Debug switch is used, will do debugging actions based on that $Debug = $PSBoundParameters.Debug.IsPresent # argument tab auto-completion and ValidateSet for Policy names Class BasePolicyNamez : System.Management.Automation.IValidateSetValuesGenerator { [System.String[]] GetValidValues() { $BasePolicyNamez = ((CiTool -lp -json | ConvertFrom-Json).Policies | Where-Object { $_.IsSystemPolicy -ne "True" } | Where-Object { $_.PolicyID -eq $_.BasePolicyID }).Friendlyname return [System.String[]]$BasePolicyNamez } } # argument tab auto-completion and ValidateSet for Fallbacks Class Fallbackz : System.Management.Automation.IValidateSetValuesGenerator { [System.String[]] GetValidValues() { $Fallbackz = ('Hash', 'FileName', 'SignedVersion', 'Publisher', 'FilePublisher', 'LeafCertificate', 'PcaCertificate', 'RootCertificate', 'WHQL', 'WHQLPublisher', 'WHQLFilePublisher', 'PFN', 'FilePath', 'None') return [System.String[]]$Fallbackz } } # argument tab auto-completion and ValidateSet for level Class Levelz : System.Management.Automation.IValidateSetValuesGenerator { [System.String[]] GetValidValues() { $Levelz = ('Hash', 'FileName', 'SignedVersion', 'Publisher', 'FilePublisher', 'LeafCertificate', 'PcaCertificate', 'RootCertificate', 'WHQL', 'WHQLPublisher', 'WHQLFilePublisher', 'PFN', 'FilePath', 'None') return [System.String[]]$Levelz } } # Redeploy the base policy in Enforced mode function Update-BasePolicyToEnforced { Set-RuleOption -FilePath $PolicyPath -Option 3 -Delete ConvertFrom-CIPolicy $PolicyPath "$PolicyID.cip" | Out-Null CiTool --update-policy ".\$PolicyID.cip" -json Remove-Item ".\$PolicyID.cip" -Force Write-host "`n`nThe Base policy with the following details has been Re-Deployed in Enforced Mode:" -ForegroundColor Green Write-Output "PolicyName = $PolicyName" Write-Output "PolicyGUID = $PolicyID`n" } # Stop operation as soon as there is an error anywhere, unless explicitly specified otherwise $ErrorActionPreference = 'Stop' if (-NOT $SkipVersionCheck) { . Update-self } $DirveLettersGlobalRootFix = Invoke-Command -ScriptBlock $DirveLettersGlobalRootFixScriptBlock } process { if ($AllowNewApps) { # remove any possible files from previous runs Remove-Item -Path ".\ProgramDir_ScanResults*.xml" -Force -ErrorAction SilentlyContinue Remove-Item -Path ".\SupplementalPolicy$SuppPolicyName.xml" -Force -ErrorAction SilentlyContinue # An empty array that holds the Policy XML files - This array will eventually be used to create the final Supplemental policy $PolicyXMLFilesArray = @() #Initiate Live Audit Mode foreach ($PolicyPath in $PolicyPaths) { # defining Base policy $xml = [xml](Get-Content $PolicyPath) $PolicyID = $xml.SiPolicy.PolicyID $PolicyName = ($xml.SiPolicy.Settings.Setting | Where-Object { $_.provider -eq "PolicyInfo" -and $_.valuename -eq "Name" -and $_.key -eq "Information" }).value.string # Remove any cip file if there is any Remove-Item -Path ".\$PolicyID.cip" -ErrorAction SilentlyContinue Set-RuleOption -FilePath $PolicyPath -Option 3 ConvertFrom-CIPolicy $PolicyPath "$PolicyID.cip" | Out-Null CiTool --update-policy ".\$PolicyID.cip" -json Remove-Item ".\$PolicyID.cip" -Force Write-host "`n`nThe Base policy with the following details has been Re-Deployed in Audit Mode:" -ForegroundColor Green Write-Output "PolicyName = $PolicyName" Write-Output "PolicyGUID = $PolicyID" ################################### User Interaction #################################### Write-host "`nAudit mode deployed, start installing your programs now" -ForegroundColor Magenta Write-Host "When you've finished installing programs, Press Enter to start selecting program directories to scan`n" -ForegroundColor Blue Pause # Store the program paths that user browses for in an array $ProgramsPaths = @() Write-host "`nSelect program directories to scan`n" -ForegroundColor Cyan # Showing folder picker GUI to the user for folder path selection do { [System.Reflection.Assembly]::LoadWithPartialName("System.windows.forms") | Out-Null $OBJ = New-Object System.Windows.Forms.FolderBrowserDialog $OBJ.InitialDirectory = "$env:SystemDrive" $OBJ.Description = $Description $Spawn = New-Object System.Windows.Forms.Form -Property @{TopMost = $true } $Show = $OBJ.ShowDialog($Spawn) If ($Show -eq "OK") { $ProgramsPaths += $OBJ.SelectedPath } Else { break } } while ($true) # Only proceed if user selected at least 1 folder path if (-NOT ($ProgramsPaths.count -eq 0)) { Write-Host "Here are the paths you selected:" -ForegroundColor Yellow $ProgramsPaths | ForEach-Object { $_ } #Process Program Folders From User input # Scan each of the folder paths that user selected for ($i = 0; $i -lt $ProgramsPaths.Count; $i++) { # Creating a hash table to dynamically add parameters based on user input and pass them to New-Cipolicy cmdlet [System.Collections.Hashtable]$UserInputProgramFoldersPolicyMakerHashTable = @{ FilePath = ".\ProgramDir_ScanResults$($i).xml" ScanPath = $ProgramsPaths[$i] Level = $Level Fallback = $Fallbacks MultiplePolicyFormat = $true UserWriteablePaths = $true } # Assess user input parameters and add the required parameters to the hash table if ($AllowFileNameFallbacks) { $UserInputProgramFoldersPolicyMakerHashTable['AllowFileNameFallbacks'] = $true } if ($SpecificFileNameLevel) { $UserInputProgramFoldersPolicyMakerHashTable['SpecificFileNameLevel'] = $SpecificFileNameLevel } if ($NoScript) { $UserInputProgramFoldersPolicyMakerHashTable['NoScript'] = $true } if (!$NoUserPEs) { $UserInputProgramFoldersPolicyMakerHashTable['UserPEs'] = $true } # Create the supplemental policy via parameter splatting New-CIPolicy @UserInputProgramFoldersPolicyMakerHashTable } # merge-cipolicy accept arrays - collecting all the policy files created by scanning user specified folders $ProgramDir_ScanResults = Get-ChildItem ".\" | Where-Object { $_.Name -like 'ProgramDir_ScanResults*.xml' } foreach ($file in $ProgramDir_ScanResults) { $PolicyXMLFilesArray += $file.FullName } Merge-CIPolicy -PolicyPaths $PolicyXMLFilesArray -OutputFilePath ".\SupplementalPolicy$SuppPolicyName.xml" | Out-Null #Re-Deploy-Basepolicy-in-Enforced-mode Update-BasePolicyToEnforced Remove-Item -Path ".\ProgramDir_ScanResults*.xml" -Force #Supplemental-policy-processing-and-deployment $SuppPolicyPath = ".\SupplementalPolicy$SuppPolicyName.xml" $SuppPolicyID = Set-CIPolicyIdInfo -FilePath $SuppPolicyPath -PolicyName "Supplemental Policy $SuppPolicyName - $(Get-Date -Format 'MM-dd-yyyy')" -ResetPolicyID -BasePolicyToSupplementPath $PolicyPath $SuppPolicyID = $SuppPolicyID.Substring(11) # Make sure policy rule options that don't belong to a Supplemental policy don't exit @(0, 1, 2, 3, 4, 8, 9, 10, 11, 12, 15, 16, 17, 19, 20) | ForEach-Object { Set-RuleOption -FilePath $SuppPolicyPath -Option $_ -Delete } Set-HVCIOptions -Strict -FilePath $SuppPolicyPath Set-CIPolicyVersion -FilePath $SuppPolicyPath -Version "1.0.0.0" ConvertFrom-CIPolicy $SuppPolicyPath "$SuppPolicyID.cip" | Out-Null CiTool --update-policy ".\$SuppPolicyID.cip" -json Remove-Item ".\$SuppPolicyID.cip" -Force Write-host "`nSupplemental policy with the following details has been Deployed in Enforced Mode:" -ForegroundColor Green [PSCustomObject]@{ SupplementalPolicyName = $SuppPolicyName SupplementalPolicyGUID = $SuppPolicyID } } # Do this if no program path(s) was selected by user else { Write-Host "`nNo program folder was selected, reverting the changes and quitting...`n" -ForegroundColor Magenta #Re-Deploy-Basepolicy-in-Enforced-mode Update-BasePolicyToEnforced break } } } if ($AllowNewAppsAuditEvents) { # Change Code Integrity event logs size if ($AllowNewAppsAuditEvents -and $LogSize) { Set-LogSize -LogSize $LogSize } # Make sure there is no leftover from previous runs Remove-Item -Path ".\ProgramDir_ScanResults*.xml" -Force -ErrorAction SilentlyContinue Remove-Item -Path ".\SupplementalPolicy$SuppPolicyName.xml" -Force -ErrorAction SilentlyContinue # Get the current date so that instead of the entire event viewer logs, only audit logs created after running this module will be captured # The notice about variable being assigned and never used should be ignored - it's being dot-sourced from Resources file $Date = Get-Date # An empty array that holds the Policy XML files - This array will eventually be used to create the final Supplemental policy $PolicyXMLFilesArray = @() ################################### Initiate Live Audit Mode ################################### foreach ($PolicyPath in $PolicyPaths) { # defining Base policy $xml = [xml](Get-Content $PolicyPath) $PolicyID = $xml.SiPolicy.PolicyID $PolicyName = ($xml.SiPolicy.Settings.Setting | Where-Object { $_.provider -eq "PolicyInfo" -and $_.valuename -eq "Name" -and $_.key -eq "Information" }).value.string # Remove any cip file if any Remove-Item -Path ".\$PolicyID.cip" -ErrorAction SilentlyContinue Set-RuleOption -FilePath $PolicyPath -Option 3 ConvertFrom-CIPolicy $PolicyPath "$PolicyID.cip" | Out-Null CiTool --update-policy ".\$PolicyID.cip" -json Remove-Item ".\$PolicyID.cip" -Force Write-host "`n`nThe Base policy with the following details has been Re-Deployed in Audit Mode:" -ForegroundColor Green Write-Output "PolicyName = $PolicyName" Write-Output "PolicyGUID = $PolicyID" ################################### User Interaction #################################### Write-host "`nAudit mode deployed, start installing your programs now" -ForegroundColor Magenta Write-Host "When you've finished installing programs, Press Enter to start selecting program directories to scan`n" -ForegroundColor Blue Pause # Store the program paths that user browses for in an array $ProgramsPaths = @() Write-host "`nSelect program directories to scan`n" -ForegroundColor Cyan # Showing folder picker GUI to the user for folder path selection do { [System.Reflection.Assembly]::LoadWithPartialName("System.windows.forms") | Out-Null $OBJ = New-Object System.Windows.Forms.FolderBrowserDialog $OBJ.InitialDirectory = "$env:SystemDrive" $OBJ.Description = $Description $Spawn = New-Object System.Windows.Forms.Form -Property @{TopMost = $true } $Show = $OBJ.ShowDialog($Spawn) If ($Show -eq "OK") { $ProgramsPaths += $OBJ.SelectedPath } Else { break } } while ($true) # Make sure User browsed for at least 1 directory if (-NOT ($ProgramsPaths.count -eq 0)) { Write-Host "Here are the paths you selected:" -ForegroundColor Yellow $ProgramsPaths | ForEach-Object { $_ } ################################### EventCapturing ################################ Write-host "Scanning Windows Event logs and creating a policy file, please wait..." -ForegroundColor Cyan # Extracting the array content from Get-AuditEventLogsProcessing function $AuditEventLogsProcessingResults = Get-AuditEventLogsProcessing -Date $Date # Only create policy for files that are available on the disk based on Event viewer logs but weren't in user-selected program path(s), if there are any if ($AuditEventLogsProcessingResults.AvailableFilesPaths) { # Using the function to find out which files are not in the user-selected path(s), if any, to only scan those # this prevents duplicate rule creation and double file copying $TestFilePathResults = (Test-FilePath -FilePath $AuditEventLogsProcessingResults.AvailableFilesPaths -DirectoryPath $ProgramsPaths).path | Select-Object -Unique Write-Debug -Message "$($TestFilePathResults.count) file(s) have been found in event viewer logs that don't exist in any of the folder paths you selected." # Another check to make sure there were indeed files found in Event viewer logs but weren't in any of the user-selected path(s) if ($TestFilePathResults) { # Create a folder in Temp directory to copy the files that are not included in user-selected program path(s) # but detected in Event viewer audit logs, scan that folder, and in the end delete it New-Item -Path "$env:TEMP\TemporaryScanFolderForEventViewerFiles" -ItemType Directory | Out-Null $TestFilePathResults | ForEach-Object { Copy-Item -Path $_ -Destination "$env:TEMP\TemporaryScanFolderForEventViewerFiles\" -ErrorAction SilentlyContinue Write-Debug -Message "The following file is being copied to the TEMP directory for scanning because it was found in event logs but didn't exist in any of the user-selected paths: $_ " } # Create a policy XML file for available files on the disk # Creating a hash table to dynamically add parameters based on user input and pass them to New-Cipolicy cmdlet [System.Collections.Hashtable]$AvailableFilesOnDiskPolicyMakerHashTable = @{ FilePath = ".\RulesForFilesNotInUserSelectedPaths.xml" ScanPath = "$env:TEMP\TemporaryScanFolderForEventViewerFiles\" Level = $Level Fallback = $Fallbacks MultiplePolicyFormat = $true UserWriteablePaths = $true } # Assess user input parameters and add the required parameters to the hash table if ($AllowFileNameFallbacks) { $AvailableFilesOnDiskPolicyMakerHashTable['AllowFileNameFallbacks'] = $true } if ($SpecificFileNameLevel) { $AvailableFilesOnDiskPolicyMakerHashTable['SpecificFileNameLevel'] = $SpecificFileNameLevel } if ($NoScript) { $AvailableFilesOnDiskPolicyMakerHashTable['NoScript'] = $true } if (!$NoUserPEs) { $AvailableFilesOnDiskPolicyMakerHashTable['UserPEs'] = $true } # Create the supplemental policy via parameter splatting New-CIPolicy @AvailableFilesOnDiskPolicyMakerHashTable # Add the policy XML file to the array that holds policy XML files $PolicyXMLFilesArray += ".\RulesForFilesNotInUserSelectedPaths.xml" # Delete the Temporary folder in the TEMP folder Remove-Item -Recurse -Path "$env:TEMP\TemporaryScanFolderForEventViewerFiles\" -Force } } # Only create policy for files that are on longer available on the disk if there are any and # if user chose to include deleted files in the final supplemental policy if ($AuditEventLogsProcessingResults.DeletedFileHashes -and $IncludeDeletedFiles) { Write-Debug -Message "$($AuditEventLogsProcessingResults.DeletedFileHashes.count) file(s) have been found in event viewer logs that were run during Audit phase but are no longer on the disk." # Create File Rules based on hash of the files and store them in the $Rules variable $i = 1 $Rules = @() $imax = ($AuditEventLogsProcessingResults.DeletedFileHashes).count while ($i -le $imax) { $AuditEventLogsProcessingResults.DeletedFileHashes | ForEach-Object { $Rules += Write-Output "`n<Allow ID=`"ID_ALLOW_AA_$i`" FriendlyName=`"$($_.'File Name') SHA256 Hash`" Hash=`"$($_.'SHA256 Hash')`" />" $Rules += Write-Output "`n<Allow ID=`"ID_ALLOW_AB_$i`" FriendlyName=`"$($_.'File Name') SHA256 Flat Hash`" Hash=`"$($_.'SHA256 Flat Hash')`" />" $Rules += Write-Output "`n<Allow ID=`"ID_ALLOW_AC_$i`" FriendlyName=`"$($_.'File Name') SHA1 Hash`" Hash=`"$($_.'SHA1 Hash')`" />" $Rules += Write-Output "`n<Allow ID=`"ID_ALLOW_AD_$i`" FriendlyName=`"$($_.'File Name') SHA1 Flat Hash`" Hash=`"$($_.'SHA1 Flat Hash')`" />" $i++ } } # Create File Rule Refs based on the ID of the File Rules above and store them in the $RulesRefs variable $i = 1 $RulesRefs = @() $imax = ($AuditEventLogsProcessingResults.DeletedFileHashes).count while ($i -le $imax) { $AuditEventLogsProcessingResults.DeletedFileHashes | ForEach-Object { $RulesRefs += Write-Output "`n<FileRuleRef RuleID=`"ID_ALLOW_AA_$i`" />" $RulesRefs += Write-Output "`n<FileRuleRef RuleID=`"ID_ALLOW_AB_$i`" />" $RulesRefs += Write-Output "`n<FileRuleRef RuleID=`"ID_ALLOW_AC_$i`" />" $RulesRefs += Write-Output "`n<FileRuleRef RuleID=`"ID_ALLOW_AD_$i`" />" $i++ } } # Save the File Rules and File Rule Refs in the FileRulesAndFileRefs.txt in the current working directory for debugging purposes $Rules + $RulesRefs | Out-File FileRulesAndFileRefs.txt # Put the Rules and RulesRefs in an empty policy file New-EmptyPolicy -RulesContent $Rules -RuleRefsContent $RulesRefs | Out-File .\DeletedFileHashesEventsPolicy.xml # adding the policy file that consists of rules from audit even logs, to the array $PolicyXMLFilesArray += ".\DeletedFileHashesEventsPolicy.xml" } ######################## Process Program Folders From User input ##################### for ($i = 0; $i -lt $ProgramsPaths.Count; $i++) { # Creating a hash table to dynamically add parameters based on user input and pass them to New-Cipolicy cmdlet [System.Collections.Hashtable]$UserInputProgramFoldersPolicyMakerHashTable = @{ FilePath = ".\ProgramDir_ScanResults$($i).xml" ScanPath = $ProgramsPaths[$i] Level = $Level Fallback = $Fallbacks MultiplePolicyFormat = $true UserWriteablePaths = $true } # Assess user input parameters and add the required parameters to the hash table if ($AllowFileNameFallbacks) { $UserInputProgramFoldersPolicyMakerHashTable['AllowFileNameFallbacks'] = $true } if ($SpecificFileNameLevel) { $UserInputProgramFoldersPolicyMakerHashTable['SpecificFileNameLevel'] = $SpecificFileNameLevel } if ($NoScript) { $UserInputProgramFoldersPolicyMakerHashTable['NoScript'] = $true } if (!$NoUserPEs) { $UserInputProgramFoldersPolicyMakerHashTable['UserPEs'] = $true } # Create the supplemental policy via parameter splatting New-CIPolicy @UserInputProgramFoldersPolicyMakerHashTable } # Merge-cipolicy accept arrays - collecting all the policy files created by scanning user specified folders $ProgramDir_ScanResults = Get-ChildItem ".\" | Where-Object { $_.Name -like 'ProgramDir_ScanResults*.xml' } foreach ($file in $ProgramDir_ScanResults) { $PolicyXMLFilesArray += $file.FullName } #region Kernel-protected-files-automatic-detection-and-allow-rule-creation # This part takes care of Kernel protected files such as the main executable of the games installed through Xbox app # For these files, only Kernel can get their hashes, it passes them to event viewer and we take them from event viewer logs # Any other attempts such as "Get-FileHash" or "Get-AuthenticodeSignature" fail and ConfigCI Module cmdlets totally ignore these files and do not create allow rules for them # Finding the file(s) first and storing them in an array $ExesWithNoHash = @() # looping through each user-selected path(s) foreach ($ProgramsPath in $ProgramsPaths) { # Making sure the currently processing path has any .exe in it $AnyAvailableExes = (Get-ChildItem -Recurse -Path $ProgramsPath -Filter "*.exe").FullName # if any .exe was found then continue testing them if ($AnyAvailableExes) { $AnyAvailableExes | ForEach-Object { $CurrentExeWithNoHash = $_ try { # Testing each executable to find the protected ones Get-FileHash -Path $CurrentExeWithNoHash -ErrorAction Stop | Out-Null } # Making sure only the right file is captured by narrowing down the error type. # E.g., when get-filehash can't get a file's hash because its open by another program, the exception is different: System.IO.IOException catch [System.UnauthorizedAccessException] { $ExesWithNoHash += $CurrentExeWithNoHash } } } } # Only proceed if any kernel protected file(s) were found in any of the user-selected directory path(s) if ($ExesWithNoHash) { Write-Debug -Message "The following Kernel protected files detected, creating allow rules for them:`n" if ($Debug) { $ExesWithNoHash | ForEach-Object { Write-Debug -Message "$_" } } $KernelProtectedHashesBlock = { foreach ($event in Get-WinEvent -FilterHashtable @{LogName = 'Microsoft-Windows-CodeIntegrity/Operational'; ID = 3076 } -ErrorAction SilentlyContinue | Where-Object { $_.TimeCreated -ge $Date } ) { $xml = [xml]$event.toxml() $xml.event.eventdata.data | ForEach-Object { $hash = @{} } { $hash[$_.name] = $_.'#text' } { [pscustomobject]$hash } | ForEach-Object { if ($_.'File Name' -match ($pattern = '\\Device\\HarddiskVolume(\d+)\\(.*)$')) { $hardDiskVolumeNumber = $Matches[1] $remainingPath = $Matches[2] $getletter = $DirveLettersGlobalRootFix | Where-Object { $_.devicepath -eq "\Device\HarddiskVolume$hardDiskVolumeNumber" } $usablePath = "$($getletter.DriveLetter)$remainingPath" $_.'File Name' = $_.'File Name' -replace $pattern, $usablePath } # Check if file is currently on the disk if (Test-Path $_.'File Name') { # Check if the file exits in the $ExesWithNoHash array if ($ExesWithNoHash -contains $_.'File Name') { $_ | Select-Object FileVersion, 'File Name', PolicyGUID, 'SHA256 Hash', 'SHA256 Flat Hash', 'SHA1 Hash', 'SHA1 Flat Hash' } } } } } $KernelProtectedHashesBlockResults = Invoke-Command -ScriptBlock $KernelProtectedHashesBlock # Only proceed further if any hashes belonging to the detected kernel protected files were found in Event viewer # If none is found then skip this part, because user didn't run those files/programs when audit mode was turned on in base policy, so no hash was found in audit logs if ($KernelProtectedHashesBlockResults) { # Create File Rules based on hash of the files and store them in the $Rules variable $i = 1 $Rules = @() $imax = ($KernelProtectedHashesBlockResults).count while ($i -le $imax) { $KernelProtectedHashesBlockResults | ForEach-Object { $Rules += Write-Output "`n<Allow ID=`"ID_ALLOW_AA_$i`" FriendlyName=`"$($_.'File Name') SHA256 Hash`" Hash=`"$($_.'SHA256 Hash')`" />" $Rules += Write-Output "`n<Allow ID=`"ID_ALLOW_AB_$i`" FriendlyName=`"$($_.'File Name') SHA256 Flat Hash`" Hash=`"$($_.'SHA256 Flat Hash')`" />" $Rules += Write-Output "`n<Allow ID=`"ID_ALLOW_AC_$i`" FriendlyName=`"$($_.'File Name') SHA1 Hash`" Hash=`"$($_.'SHA1 Hash')`" />" $Rules += Write-Output "`n<Allow ID=`"ID_ALLOW_AD_$i`" FriendlyName=`"$($_.'File Name') SHA1 Flat Hash`" Hash=`"$($_.'SHA1 Flat Hash')`" />" $i++ } } # Create File Rule Refs based on the ID of the File Rules above and store them in the $RulesRefs variable $i = 1 $RulesRefs = @() $imax = ($KernelProtectedHashesBlockResults).count while ($i -le $imax) { $KernelProtectedHashesBlockResults | ForEach-Object { $RulesRefs += Write-Output "`n<FileRuleRef RuleID=`"ID_ALLOW_AA_$i`" />" $RulesRefs += Write-Output "`n<FileRuleRef RuleID=`"ID_ALLOW_AB_$i`" />" $RulesRefs += Write-Output "`n<FileRuleRef RuleID=`"ID_ALLOW_AC_$i`" />" $RulesRefs += Write-Output "`n<FileRuleRef RuleID=`"ID_ALLOW_AD_$i`" />" $i++ } } # Save the File Rules and File Rule Refs in the FileRulesAndFileRefs.txt in the current working directory for debugging purposes $Rules + $RulesRefs | Out-File KernelProtectedFiles.txt # Put the Rules and RulesRefs in an empty policy file New-EmptyPolicy -RulesContent $Rules -RuleRefsContent $RulesRefs | Out-File .\KernelProtectedFiles.xml # adding the policy file to the array of xml files $PolicyXMLFilesArray += ".\KernelProtectedFiles.xml" } else { Write-Warning -Message "The following Kernel protected files detected, but no hash was found for them in Event viewer logs.`nThis means you didn't run those files/programs when Audit mode was turned on.`n" $ExesWithNoHash | ForEach-Object { Write-Warning -Message "$_" } } } #endregion Kernel-protected-files-automatic-detection-and-allow-rule-creation Write-Debug -Message "The following policy xml files are going to be merged into the final Supplemental policy and be deployed on the system:" if ($Debug) { $PolicyXMLFilesArray | ForEach-Object { Write-Debug -Message "$_" } } # Merge all of the policy XML files in the array into the final Supplemental policy Merge-CIPolicy -PolicyPaths $PolicyXMLFilesArray -OutputFilePath ".\SupplementalPolicy$SuppPolicyName.xml" | Out-Null } # Exit the operation if user didn't select any folder paths else { Write-Host "`nNo program folder was selected, reverting the changes and quitting...`n" -ForegroundColor Red #Re-Deploy-Basepolicy-in-Enforced-mode Update-BasePolicyToEnforced break } # Delete these extra files unless user uses -Debugmode optional parameter if (-NOT $Debug) { Remove-Item -Path ".\FileRulesAndFileRefs.txt" -Force -ErrorAction SilentlyContinue Remove-Item -Path ".\DeletedFileHashesEventsPolicy.xml" -Force -ErrorAction SilentlyContinue Remove-Item -Path ".\ProgramDir_ScanResults*.xml" -Force -ErrorAction SilentlyContinue Remove-Item -Path ".\RulesForFilesNotInUserSelectedPaths.xml" -Force -ErrorAction SilentlyContinue Remove-Item -Path ".\KernelProtectedFiles.xml" -Force -ErrorAction SilentlyContinue Remove-Item -Path ".\KernelProtectedFiles.txt" -Force -ErrorAction SilentlyContinue } #Re-Deploy-Basepolicy-in-Enforced-mode Update-BasePolicyToEnforced #################### Supplemental-policy-processing-and-deployment ############################ $SuppPolicyPath = ".\SupplementalPolicy$SuppPolicyName.xml" $SuppPolicyID = Set-CIPolicyIdInfo -FilePath $SuppPolicyPath -PolicyName "Supplemental Policy $SuppPolicyName - $(Get-Date -Format 'MM-dd-yyyy')" -ResetPolicyID -BasePolicyToSupplementPath $PolicyPath $SuppPolicyID = $SuppPolicyID.Substring(11) # Make sure policy rule options that don't belong to a Supplemental policy don't exit @(0, 1, 2, 3, 4, 8, 9, 10, 11, 12, 15, 16, 17, 19, 20) | ForEach-Object { Set-RuleOption -FilePath $SuppPolicyPath -Option $_ -Delete } Set-HVCIOptions -Strict -FilePath $SuppPolicyPath Set-CIPolicyVersion -FilePath $SuppPolicyPath -Version "1.0.0.0" ConvertFrom-CIPolicy $SuppPolicyPath "$SuppPolicyID.cip" | Out-Null CiTool --update-policy ".\$SuppPolicyID.cip" -json Remove-Item ".\$SuppPolicyID.cip" -Force Write-host "`nSupplemental policy with the following details has been Deployed in Enforced Mode:" -ForegroundColor Green # create an object to display on the console [PSCustomObject]@{ SupplementalPolicyName = $SuppPolicyName SupplementalPolicyGUID = $SuppPolicyID } } } if ($MergeSupplementalPolicies) { foreach ($PolicyPath in $PolicyPaths) { ############ Input policy verification prior to doing anything ############ foreach ($SuppPolicyPath in $SuppPolicyPaths) { $Supplementalxml = [xml](Get-Content $SuppPolicyPath) $SupplementalPolicyID = $Supplementalxml.SiPolicy.PolicyID $SupplementalPolicyType = $Supplementalxml.SiPolicy.PolicyType $DeployedPoliciesIDs = (CiTool -lp -json | ConvertFrom-Json).Policies.PolicyID | ForEach-Object { return "{$_}" } # Check the type of the user selected Supplemental policy XML files to make sure they are indeed Supplemental policies if ($SupplementalPolicyType -ne "Supplemental Policy") { Write-Error -Message "The Selected XML file with GUID $SupplementalPolicyID isn't a Supplemental Policy." } # Check to make sure the user selected Supplemental policy XML files are deployed on the system if ($DeployedPoliciesIDs -notcontains $SupplementalPolicyID) { Write-Error -Message "The Selected Supplemental XML file with GUID $SupplementalPolicyID isn't deployed on the system." } } # Perform the merge Merge-CIPolicy -PolicyPaths $SuppPolicyPaths -OutputFilePath "$SuppPolicyName.xml" | Out-Null # Delete the deployed Supplemental policies that user selected from the system because we're going to deploy the new merged policy that contains all of them foreach ($SuppPolicyPath in $SuppPolicyPaths) { $Supplementalxml = [xml](Get-Content $SuppPolicyPath) $SupplementalPolicyID = $Supplementalxml.SiPolicy.PolicyID citool --remove-policy $SupplementalPolicyID -json | Out-Null # remove the old policy files unless user chose to keep them if (!$KeepOldSupplementalPolicies) { Remove-Item -Path $SuppPolicyPath -Force } } # Prepare the final merged Supplemental policy for deployment $SuppPolicyID = Set-CIPolicyIdInfo -FilePath "$SuppPolicyName.xml" -ResetPolicyID -PolicyName "$SuppPolicyName - $(Get-Date -Format 'MM-dd-yyyy')" -BasePolicyToSupplementPath $PolicyPath $SuppPolicyID = $SuppPolicyID.Substring(11) Set-HVCIOptions -Strict -FilePath "$SuppPolicyName.xml" ConvertFrom-CIPolicy "$SuppPolicyName.xml" "$SuppPolicyID.cip" | Out-Null CiTool --update-policy "$SuppPolicyID.cip" -json Remove-Item -Path "$SuppPolicyID.cip" -Force Write-Host "`nThe Supplemental policy $SuppPolicyName has been deployed on the system, replacing the old ones, please restart your system." -ForegroundColor Green } } if ($UpdateBasePolicy) { # First get the Microsoft recommended driver block rules Invoke-Command -ScriptBlock $GetBlockRulesSCRIPTBLOCK | Out-Null switch ($NewBasePolicyType) { "AllowMicrosoft_Plus_Block_Rules" { Copy-item -Path "C:\Windows\schemas\CodeIntegrity\ExamplePolicies\AllowMicrosoft.xml" -Destination ".\AllowMicrosoft.xml" Merge-CIPolicy -PolicyPaths .\AllowMicrosoft.xml, '.\Microsoft recommended block rules.xml' -OutputFilePath .\BasePolicy.xml | Out-Null Set-CIPolicyIdInfo -FilePath .\BasePolicy.xml -PolicyName "Allow Microsoft Plus Block Rules refreshed On $(Get-Date -Format 'MM-dd-yyyy')" @(0, 2, 5, 6, 11, 12, 16, 17, 19, 20) | ForEach-Object { Set-RuleOption -FilePath .\BasePolicy.xml -Option $_ } @(3, 4, 9, 10, 13, 18) | ForEach-Object { Set-RuleOption -FilePath .\BasePolicy.xml -Option $_ -Delete } } "Lightly_Managed_system_Policy" { Copy-item -Path "C:\Windows\schemas\CodeIntegrity\ExamplePolicies\AllowMicrosoft.xml" -Destination ".\AllowMicrosoft.xml" Merge-CIPolicy -PolicyPaths .\AllowMicrosoft.xml, '.\Microsoft recommended block rules.xml' -OutputFilePath .\BasePolicy.xml | Out-Null Set-CIPolicyIdInfo -FilePath .\BasePolicy.xml -PolicyName "Signed And Reputable policy refreshed on $(Get-Date -Format 'MM-dd-yyyy')" @(0, 2, 5, 6, 11, 12, 14, 15, 16, 17, 19, 20) | ForEach-Object { Set-RuleOption -FilePath .\BasePolicy.xml -Option $_ } @(3, 4, 9, 10, 13, 18) | ForEach-Object { Set-RuleOption -FilePath .\BasePolicy.xml -Option $_ -Delete } # Configure required services for ISG authorization Start-Process -FilePath 'C:\Windows\System32\appidtel.exe' -ArgumentList 'start' -Wait -NoNewWindow Start-Process -FilePath 'C:\Windows\System32\sc.exe' -ArgumentList 'config', 'appidsvc', "start= auto" -Wait -NoNewWindow } "DefaultWindows_WithBlockRules" { Copy-item -Path "C:\Windows\schemas\CodeIntegrity\ExamplePolicies\DefaultWindows_Enforced.xml" -Destination ".\DefaultWindows_Enforced.xml" # Scan PowerShell core directory and add them to the Default Windows base policy so that the module can be used after it's been deployed if (Test-Path "C:\Program Files\PowerShell") { Write-Host "Creating allow rules for PowerShell in the DefaultWindows base policy so you can continue using this module after deploying it." -ForegroundColor Blue New-CIPolicy -ScanPath "C:\Program Files\PowerShell" -Level FilePublisher -NoScript -Fallback Hash -UserPEs -UserWriteablePaths -MultiplePolicyFormat -FilePath .\AllowPowerShell.xml Merge-CIPolicy -PolicyPaths .\DefaultWindows_Enforced.xml, .\AllowPowerShell.xml, '.\Microsoft recommended block rules.xml' -OutputFilePath .\BasePolicy.xml | Out-Null } else { Merge-CIPolicy -PolicyPaths .\DefaultWindows_Enforced.xml, '.\Microsoft recommended block rules.xml' -OutputFilePath .\BasePolicy.xml | Out-Null } Set-CIPolicyIdInfo -FilePath .\BasePolicy.xml -PolicyName "Default Windows Plus Block Rules refreshed On $(Get-Date -Format 'MM-dd-yyyy')" @(0, 2, 5, 6, 11, 12, 16, 17, 19, 20) | ForEach-Object { Set-RuleOption -FilePath .\BasePolicy.xml -Option $_ } @(3, 4, 9, 10, 13, 18) | ForEach-Object { Set-RuleOption -FilePath .\BasePolicy.xml -Option $_ -Delete } } } if ($UpdateBasePolicy -and $RequireEVSigners) { Set-RuleOption -FilePath .\BasePolicy.xml -Option 8 } Set-CIPolicyVersion -FilePath .\BasePolicy.xml -Version "1.0.0.1" Set-HVCIOptions -Strict -FilePath .\BasePolicy.xml # Remove the extra files create during module operation that are no longer necessary Remove-Item .\AllowPowerShell.xml -Force -ErrorAction SilentlyContinue Remove-Item .\DefaultWindows_Enforced.xml -Force -ErrorAction SilentlyContinue Remove-Item .\AllowMicrosoft.xml -Force -ErrorAction SilentlyContinue Remove-Item '.\Microsoft recommended block rules.xml' -Force # Get the policy ID of the currently deployed base policy based on the policy name that user selected $CurrentID = ((CiTool -lp -json | ConvertFrom-Json).Policies | Where-Object { $_.IsSystemPolicy -ne "True" } | Where-Object { $_.Friendlyname -eq $CurrentBasePolicyName }).BasePolicyID $CurrentID = "{$CurrentID}" [xml]$xml = Get-Content ".\BasePolicy.xml" $xml.SiPolicy.PolicyID = $CurrentID $xml.SiPolicy.BasePolicyID = $CurrentID $xml.Save(".\BasePolicy.xml") ConvertFrom-CIPolicy ".\BasePolicy.xml" "$CurrentID.cip" | Out-Null # Deploy the new base policy with the same GUID on the system CiTool --update-policy "$CurrentID.cip" -json # Remove the policy binary after it's been deployed Remove-Item "$CurrentID.cip" -Force # Keep the new base policy XML file that was just deployed, in the current directory, so user can keep it for later switch ($NewBasePolicyType) { "AllowMicrosoft_Plus_Block_Rules" { Remove-Item -Path ".\AllowMicrosoftPlusBlockRules.xml" -Force -ErrorAction SilentlyContinue Rename-Item -Path ".\BasePolicy.xml" -NewName "AllowMicrosoftPlusBlockRules.xml" } "Lightly_Managed_system_Policy" { Remove-Item -Path ".\SignedAndReputable.xml" -Force -ErrorAction SilentlyContinue Rename-Item -Path ".\BasePolicy.xml" -NewName "SignedAndReputable.xml" } "DefaultWindows_WithBlockRules" { Remove-Item -Path ".\DefaultWindowsPlusBlockRules.xml" -Force -ErrorAction SilentlyContinue Rename-Item -Path ".\BasePolicy.xml" -NewName "DefaultWindowsPlusBlockRules.xml" } } } } <# .SYNOPSIS Edits Unsigned WDAC policies deployed on the system .LINK https://github.com/HotCakeX/Harden-Windows-Security/wiki/Edit-WDACConfig .DESCRIPTION Using official Microsoft methods, Edits non-signed WDAC policies deployed on the system .COMPONENT Windows Defender Application Control, ConfigCI PowerShell module .FUNCTIONALITY Using official Microsoft methods, Edits non-signed WDAC policies deployed on the system .PARAMETER AllowNewApps While an unsigned WDAC policy is already deployed on the system, rebootlessly turn on Audit mode in it, which will allow you to install a new app that was otherwise getting blocked. .PARAMETER AllowNewAppsAuditEvents While an unsigned WDAC policy is already deployed on the system, rebootlessly turn on Audit mode in it, which will allow you to install a new app that was otherwise getting blocked. .PARAMETER MergeSupplementalPolicies Merges multiple deployed supplemental policies into 1 single supplemental policy, removes the old ones, deploys the new one. System restart needed to take effect. .PARAMETER UpdateBasePolicy It can rebootlessly change the type of the deployed base policy. It can update the recommended block rules and/or change policy rule options in the deployed base policy. .PARAMETER SkipVersionCheck Can be used with any parameter to bypass the online version check - only to be used in rare cases #> } # Importing argument completer ScriptBlocks . "$psscriptroot\ArgumentCompleters.ps1" # Set PSReadline tab completion to complete menu for easier access to available parameters - Only for the current session Set-PSReadlineKeyHandler -Key Tab -Function MenuComplete Register-ArgumentCompleter -CommandName "Edit-WDACConfig" -ParameterName "PolicyPaths" -ScriptBlock $ArgumentCompleterPolicyPathsBasePoliciesOnly Register-ArgumentCompleter -CommandName "Edit-WDACConfig" -ParameterName "SuppPolicyPaths" -ScriptBlock $ArgumentCompleterPolicyPathsSupplementalPoliciesOnly |