Src/Private/Get-AbrADSecurityAssessment.ps1
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function Get-AbrADSecurityAssessment { <# .SYNOPSIS Used by As Built Report to retrieve Microsoft AD Account Security Assessment information. .DESCRIPTION .NOTES Version: 0.7.0 Author: Jonathan Colon Twitter: @jcolonfzenpr Github: rebelinux .EXAMPLE .LINK #> [CmdletBinding()] param ( [Parameter ( Position = 0, Mandatory)] [string] $Domain ) begin { Write-PscriboMessage "Discovering Account Security Assessment information on $Domain." } process { if ($HealthCheck.Domain.Security) { try { $DC = Invoke-Command -Session $TempPssSession {Get-ADDomain -Identity $using:Domain | Select-Object -ExpandProperty ReplicaDirectoryServers | Select-Object -First 1} $LastLoggedOnDate = $(Get-Date) - $(New-TimeSpan -days 180) $PasswordStaleDate = $(Get-Date) - $(New-TimeSpan -days 180) $ADLimitedProperties = @("Name","Enabled","SAMAccountname","DisplayName","Enabled","LastLogonDate","PasswordLastSet","PasswordNeverExpires","PasswordNotRequired","PasswordExpired","SmartcardLogonRequired","AccountExpirationDate","AdminCount","Created","Modified","LastBadPasswordAttempt","badpwdcount","mail","CanonicalName","DistinguishedName","ServicePrincipalName","SIDHistory","PrimaryGroupID","UserAccountControl") $DomainUsers = Invoke-Command -Session $TempPssSession {Get-ADUser -Filter * -Property $using:ADLimitedProperties -Server $using:DC -Searchbase (Get-ADDomain -Identity $using:Domain)} $DomainEnabledUsers = $DomainUsers | Where-Object {$_.Enabled -eq $True } | Measure-Object $DomainDisabledUsers = $DomainUsers | Where-Object {$_.Enabled -eq $false } | Measure-Object $DomainEnabledInactiveUsers = $DomainEnabledUsers | Where-Object { ($_.LastLogonDate -le $LastLoggedOnDate) -AND ($_.PasswordLastSet -le $PasswordStaleDate) } | Measure-Object $DomainUsersWithReversibleEncryptionPasswordArray = $DomainUsers | Where-Object { $_.UserAccountControl -band 0x0080 } | Measure-Object $DomainUserPasswordNotRequiredArray = $DomainUsers | Where-Object {$_.PasswordNotRequired -eq $True} | Measure-Object $DomainUserPasswordNeverExpiresArray = $DomainUsers | Where-Object {$_.PasswordNeverExpires -eq $True} | Measure-Object $DomainKerberosDESUsersArray = $DomainUsers | Where-Object { $_.UserAccountControl -band 0x200000 } | Measure-Object $DomainUserDoesNotRequirePreAuthArray = $DomainUsers | Where-Object {$_.DoesNotRequirePreAuth -eq $True} | Measure-Object $DomainUsersWithSIDHistoryArray = $DomainUsers | Where-Object {$_.SIDHistory -like "*"} | Measure-Object Write-PscriboMessage "Discovered AD Account Security Assessment information from $Domain." if ($DomainUsers) { Section -Style Heading4 'Health Check - Account Security Assessment' { Paragraph "The following section provide a summary of the Account Security Assessment on Domain $($Domain.ToString().ToUpper())." BlankLine $OutObj = @() Write-PscriboMessage "Collecting Account Security Assessment information from $($Domain)." try { $inObj = [ordered] @{ 'Total Users' = $DomainUsers.Count 'Enabled Users' = $DomainEnabledUsers.Count 'Disabled Users' = $DomainDisabledUsers.Count 'Enabled Inactive Users' = $DomainEnabledInactiveUsers.Count 'Users With Reversible Encryption Password' = $DomainUsersWithReversibleEncryptionPasswordArray.Count 'User Password Not Required' = $DomainUserPasswordNotRequiredArray.Count 'User Password Never Expires' = $DomainUserPasswordNeverExpiresArray.Count 'Kerberos DES Users' = $DomainKerberosDESUsersArray.Count 'User Does Not Require Pre Auth' = $DomainUserDoesNotRequirePreAuthArray.Count 'Users With SID History' = $DomainUsersWithSIDHistoryArray.Count } $OutObj += [pscustomobject]$inobj } catch { Write-PscriboMessage -IsWarning "$($_.Exception.Message) (Account Security Assessment Item)" } if ($HealthCheck.Domain.Security) { $OutObj | Where-Object {$_.'Enabled Inactive Users' -gt 0} | Set-Style -Style Warning -Property 'Enabled Inactive Users' $OutObj | Where-Object {$_.'Users With Reversible Encryption Password' -gt 0} | Set-Style -Style Warning -Property 'Users With Reversible Encryption Password' $OutObj | Where-Object {$_.'User Password Not Required' -gt 0} | Set-Style -Style Warning -Property 'User Password Not Required' $OutObj | Where-Object {$_.'User Password Never Expires' -gt 0} | Set-Style -Style Warning -Property 'User Password Never Expires' $OutObj | Where-Object {$_.'Kerberos DES Users' -gt 0} | Set-Style -Style Warning -Property 'Kerberos DES Users' $OutObj | Where-Object {$_.'User Does Not Require Pre Auth' -gt 0} | Set-Style -Style Warning -Property 'User Does Not Require Pre Auth' $OutObj | Where-Object {$_.'Users With SID History' -gt 0} | Set-Style -Style Warning -Property 'Users With SID History' } $TableParams = @{ Name = "Account Security Assessment - $($Domain.ToString().ToUpper())" List = $true ColumnWidths = 40, 60 } if ($Report.ShowTableCaptions) { $TableParams['Caption'] = "- $($TableParams.Name)" } $OutObj | Table @TableParams Paragraph "Health Check:" -Italic -Bold -Underline Paragraph "Corrective Actions: Ensure there aren't any account with weak security posture." -Italic -Bold } } } catch { Write-PscriboMessage -IsWarning "$($_.Exception.Message) (Account Security Assessment Table)" } if ($InfoLevel.Domain -ge 2) { try { $DC = Invoke-Command -Session $TempPssSession {Get-ADDomain -Identity $using:Domain | Select-Object -ExpandProperty ReplicaDirectoryServers | Select-Object -First 1} $PrivilegedUsers = Invoke-Command -Session $TempPssSession {Get-ADUser -Server $using:Domain -filter {AdminCount -eq 1} -Properties Name,Created,PasswordLastSet,LastLogonDate} Write-PscriboMessage "Discovered Privileged Users information from $Domain." if ($PrivilegedUsers) { Section -Style Heading4 'Health Check - Privileged Users Assessment' { Paragraph "The following section details probable AD Admin accounts (user accounts with AdminCount set to 1) on Domain $($Domain.ToString().ToUpper())" BlankLine $OutObj = @() Write-PscriboMessage "Collecting Privileged Users Assessment information from $($Domain)." foreach ($PrivilegedUser in $PrivilegedUsers) { try { $inObj = [ordered] @{ 'Username' = $PrivilegedUser.SamAccountName 'Created' = Switch ($PrivilegedUser.Created) { $Null {'-'} default {$PrivilegedUser.Created.ToShortDateString()} } 'Password Last Set' = Switch ($PrivilegedUser.PasswordLastSet) { $Null {'-'} default {$PrivilegedUser.PasswordLastSet.ToShortDateString()} } 'Last Logon Date' = Switch ($PrivilegedUser.LastLogonDate) { $Null {'-'} default {$PrivilegedUser.LastLogonDate.ToShortDateString()} } } $OutObj += [pscustomobject]$inobj } catch { Write-PscriboMessage -IsWarning "$($_.Exception.Message) (Privileged Users Assessment Item)" } } $TableParams = @{ Name = "Privileged User Assessment - $($Domain.ToString().ToUpper())" List = $false ColumnWidths = 40, 20, 20, 20 } if ($Report.ShowTableCaptions) { $TableParams['Caption'] = "- $($TableParams.Name)" } $OutObj | Table @TableParams Paragraph "Health Check:" -Italic -Bold -Underline Paragraph "Corrective Actions: Ensure there aren't any account with weak security posture." -Italic -Bold } } } catch { Write-PscriboMessage -IsWarning "$($_.Exception.Message) (Account Security Assessment Table)" } try { $DC = Invoke-Command -Session $TempPssSession {Get-ADDomain -Identity $using:Domain | Select-Object -ExpandProperty ReplicaDirectoryServers | Select-Object -First 1} $UserSPNs = Invoke-Command -Session $TempPssSession {Get-ADUser -Server $using:Domain -filter {ServicePrincipalName -like '*'} -Properties PasswordLastSet,LastLogonDate,ServicePrincipalName,TrustedForDelegation,TrustedtoAuthForDelegation} Write-PscriboMessage "Discovered Service Accounts information from $Domain." if ($UserSPNs) { Section -Style Heading4 'Health Check - Service Accounts Assessment' { Paragraph "The following section details probable AD Service Accounts (user accounts with SPNs) on Domain $($Domain.ToString().ToUpper())" BlankLine $OutObj = @() Write-PscriboMessage "Collecting Service Accounts information from $($Domain)." foreach ($UserSPN in $UserSPNs) { try { $inObj = [ordered] @{ 'Username' = $UserSPN.SamAccountName 'Enabled' = ConvertTo-TextYN $UserSPN.Enabled 'Password Last Set' = Switch ($UserSPN.PasswordLastSet) { $Null {'-'} default {$UserSPN.PasswordLastSet.ToShortDateString()} } 'Last Logon Date' = Switch ($UserSPN.LastLogonDate) { $Null {'-'} default {$UserSPN.LastLogonDate.ToShortDateString()} } 'Service Principal Name' = $UserSPN.ServicePrincipalName } $OutObj += [pscustomobject]$inobj } catch { Write-PscriboMessage -IsWarning "$($_.Exception.Message) (Service Accounts Assessment Item)" } } $TableParams = @{ Name = "Service Accounts Assessment - $($Domain.ToString().ToUpper())" List = $false ColumnWidths = 30, 12, 14, 14, 30 } if ($Report.ShowTableCaptions) { $TableParams['Caption'] = "- $($TableParams.Name)" } $OutObj | Table @TableParams Paragraph "Health Check:" -Italic -Bold -Underline Paragraph "Corrective Actions: Service accounts are that gray area between regular user accounts and admin accounts that are often highly privileged. They are almost always over-privileged due to documented vendor requirements or because of operational challenges. Ensure there aren't any account with weak security posture." -Italic -Bold } } } catch { Write-PscriboMessage -IsWarning "$($_.Exception.Message) (Account Security Assessment Table)" } } } } end {} } |