New-ConfigWDAC.psm1
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#requires -version 7.3.3 function New-ConfigWDAC { [CmdletBinding( DefaultParameterSetName = "set1", HelpURI = "https://github.com/HotCakeX/Harden-Windows-Security/wiki/WDAC-Module", SupportsShouldProcess = $true, PositionalBinding = $false, ConfirmImpact = 'High' )] Param( [Parameter(Mandatory = $false, ParameterSetName = "set1", Position = 0)][switch]$Get_RecommendedBlockRules, [Parameter(Mandatory = $false, ParameterSetName = "set9", Position = 0)][switch]$Get_RecommendedDriverBlockRules, [Parameter(Mandatory = $false, ParameterSetName = "set7", Position = 0)][switch]$Make_AllowMSFT_WithReccBlockRules, [Parameter(Mandatory = $false, ParameterSetName = "set10", Position = 0)][switch]$Deploy_LatestDriverBlockRules, [Parameter(Mandatory = $false, ParameterSetName = "set11", Position = 0)][switch]$Make_ScheduledTask_AutoUpdate_DriverBlockRules, [Parameter(Mandatory = $false, ParameterSetName = "set12", Position = 0)][switch]$Make_PolicyFromAuditLogs, [Parameter(Mandatory = $false, ParameterSetName = "set13", Position = 0)][switch]$Prep_SystemFor_MSFTOnlyAudit, [Parameter(Mandatory = $false, ParameterSetName = "set8", Position = 0)][switch]$Make_LightlyManagedPolicy, [Parameter(Mandatory = $false, ParameterSetName = "set14", Position = 0)][switch]$ListActivePolicies, [Parameter(Mandatory = $false, ParameterSetName = "set15", Position = 0)][switch]$VerifyWDACStatus, [Parameter(Mandatory = $false, ParameterSetName = "set2", Position = 0)][switch]$Sign_Deploy_Policy, [Parameter(Mandatory = $false, ParameterSetName = "set3", Position = 0)][switch]$Make_SupplementalPolicy, [Parameter(Mandatory = $false, ParameterSetName = "set4", Position = 0)][switch]$RemoveSignedPolicy, [Parameter(Mandatory = $false, ParameterSetName = "set5", Position = 0)][switch]$AfterRebootRemoval, [Parameter(Mandatory = $false, ParameterSetName = "set6", Position = 0)][switch]$RemoveUNsignedPolicy, [parameter(Mandatory = $true, ParameterSetName = "set2", ValueFromPipeline = $true)][string]$CertPath, [parameter(Mandatory = $true, ParameterSetName = "set3", ValueFromPipeline = $true)][string]$ScanLocation, [parameter(Mandatory = $true, ParameterSetName = "set3")][string]$SuppPolicyName, [Parameter(Mandatory = $false, ParameterSetName = "set12")] [Parameter(Mandatory = $false, ParameterSetName = "set8")] [Parameter(Mandatory = $false, ParameterSetName = "set7")] [parameter(Mandatory = $false, ParameterSetName = "set3")] [switch]$Deployit, [parameter(Mandatory = $true, ParameterSetName = "set2", ValueFromPipeline = $true)] [parameter(Mandatory = $true, ParameterSetName = "set3", ValueFromPipeline = $true)] [parameter(Mandatory = $true, ParameterSetName = "set4", ValueFromPipeline = $true)] [parameter(Mandatory = $true, ParameterSetName = "set5", ValueFromPipeline = $true)] [string[]]$PolicyPaths, [parameter(Mandatory = $false, ParameterSetName = "set2", ValueFromPipeline = $true)] [parameter(Mandatory = $false, ParameterSetName = "set4", ValueFromPipeline = $true)] [string]$SignToolPath, [parameter(Mandatory = $true, ParameterSetName = "set2", ValueFromPipeline = $true)] [parameter(Mandatory = $true, ParameterSetName = "set4", ValueFromPipeline = $true)] [string]$CertCN, [parameter(Mandatory = $false, ParameterSetName = "set6")][string[]]$PolicyIDs, [ValidateSet([PolicyNamez])] [parameter(Mandatory = $false, ParameterSetName = "set6")] [string[]]$PolicyNames, [Parameter(Mandatory = $false, ParameterSetName = "set8")] [Parameter(Mandatory = $false, ParameterSetName = "set12")] [Parameter(Mandatory = $false, ParameterSetName = "set7")] [switch]$TestMode, [Parameter(Mandatory = $false, ParameterSetName = "set8")] [Parameter(Mandatory = $false, ParameterSetName = "set12")] [Parameter(Mandatory = $false, ParameterSetName = "set7")] [switch]$RequireEVSigners ) $ErrorActionPreference = 'Stop' # argument tab auto-completion for Policy names Class PolicyNamez : System.Management.Automation.IValidateSetValuesGenerator { [string[]] GetValidValues() { $PolicyNamez = ((CiTool -lp -json | ConvertFrom-Json).Policies | Where-Object { $_.IsSystemPolicy -ne "True" }).Friendlyname return [string[]]$PolicyNamez } } #region Script-Blocks $Get_RecommendedBlockRulesSCRIPTBLOCK = { $MicrosoftRecommendeDriverBlockRules = Invoke-WebRequest -Uri "https://raw.githubusercontent.com/MicrosoftDocs/windows-itpro-docs/public/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-block-rules.md" $MicrosoftRecommendeDriverBlockRules -match "(?s)(?<=``````xml).*(?=``````)" | Out-Null $Rules = $Matches[0] $Rules = $Rules -replace '<Allow\sID="ID_ALLOW_A_1"\sFriendlyName="Allow\sKernel\sDrivers"\sFileName="\*".*/>', '' $Rules = $Rules -replace '<Allow\sID="ID_ALLOW_A_2"\sFriendlyName="Allow\sUser\smode\scomponents"\sFileName="\*".*/>', '' $Rules = $Rules -replace '<FileRuleRef\sRuleID="ID_ALLOW_A_1".*/>', '' $Rules = $Rules -replace '<FileRuleRef\sRuleID="ID_ALLOW_A_2".*/>', '' $Rules | Out-File '.\Microsoft recommended block rules TEMP.XML' Get-Content '.\Microsoft recommended block rules TEMP.XML' | Where-Object { $_.trim() -ne "" } | Out-File '.\Microsoft recommended block rules.XML' Remove-Item '.\Microsoft recommended block rules TEMP.XML' -Force Set-RuleOption -FilePath '.\Microsoft recommended block rules.XML' -Option 3 -Delete Set-HVCIOptions -Strict -FilePath '.\Microsoft recommended block rules.XML' Write-host "Microsoft recommended block rules.XML policy file has been created in $(Get-Location)" -ForegroundColor Green } $Get_RecommendedDriverBlockRulesSCRIPTBLOCK = { $MicrosoftRecommendeDriverBlockRules = Invoke-WebRequest -Uri "https://raw.githubusercontent.com/MicrosoftDocs/windows-itpro-docs/public/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-driver-block-rules.md" $MicrosoftRecommendeDriverBlockRules -match "(?s)(?<=``````xml).*(?=``````)" | Out-Null $DriverRules = $Matches[0] $DriverRules = $DriverRules -replace '<Allow\sID="ID_ALLOW_ALL_1"\sFriendlyName=""\sFileName="\*".*/>', '' $DriverRules = $DriverRules -replace '<Allow\sID="ID_ALLOW_ALL_2"\sFriendlyName=""\sFileName="\*".*/>', '' $DriverRules = $DriverRules -replace '<FileRuleRef\sRuleID="ID_ALLOW_ALL_1".*/>', '' # not using this one because then during the merge there will be error - The reason is that "<FileRuleRef RuleID="ID_ALLOW_ALL_2" />" is the only FileruleRef in the XML and after removing it, the <SigningScenario> element will be empty #$DriverRules = $DriverRules -replace '<FileRuleRef\sRuleID="ID_ALLOW_ALL_2".*/>','' $DriverRules = $DriverRules -replace '<SigningScenario\sValue="12"\sID="ID_SIGNINGSCENARIO_WINDOWS"\sFriendlyName="Auto\sgenerated\spolicy[\S\s]*<\/SigningScenario>', '' $DriverRules | Out-File '.\Microsoft recommended driver block rules TEMP.XML' Get-Content '.\Microsoft recommended driver block rules TEMP.XML' | Where-Object { $_.trim() -ne "" } | Out-File '.\Microsoft recommended driver block rules.XML' Remove-Item '.\Microsoft recommended driver block rules TEMP.XML' -Force Set-RuleOption -FilePath '.\Microsoft recommended driver block rules.XML' -Option 3 -Delete Set-HVCIOptions -Strict -FilePath '.\Microsoft recommended driver block rules.XML' Write-host "Microsoft recommended driver block rules.XML policy file has been created in $(Get-Location)" -ForegroundColor Green } $Make_AllowMSFT_WithReccBlockRulesSCRIPTBLOCK = { Invoke-Command -ScriptBlock $Get_RecommendedBlockRulesSCRIPTBLOCK Copy-Item -Path "C:\Windows\schemas\CodeIntegrity\ExamplePolicies\AllowMicrosoft.xml" -Destination ".\AllowMicrosoft.xml" Merge-CIPolicy -PolicyPaths .\AllowMicrosoft.xml, '.\Microsoft recommended block rules.XML' -OutputFilePath .\AllowMicrosoftPlusBlockRules.XML $PolicyID = Set-CIPolicyIdInfo -FilePath .\AllowMicrosoftPlusBlockRules.XML -ResetPolicyID $PolicyID = $PolicyID.Substring(11) Set-CIPolicyIdInfo -PolicyName "DefaultAllowMicrosoft Plus ReccommendedBlockRules Made On $(Get-Date -Format 'MM-dd-yyyy')" -FilePath .\AllowMicrosoftPlusBlockRules.XML @(0, 2, 5, 6, 11, 12, 16, 17, 19, 20) | ForEach-Object { Set-RuleOption -FilePath .\AllowMicrosoftPlusBlockRules.XML -Option $_ } @(3, 9, 10) | ForEach-Object { Set-RuleOption -FilePath .\AllowMicrosoftPlusBlockRules.XML -Option $_ -Delete } if ($TestMode) { & $TestModeSCRIPTBLOCK -PolicyPathToEnableTesting ".\AllowMicrosoftPlusBlockRules.XML" } if ($RequireEVSigners) { & $RequireEVSignersSCRIPTBLOCK -PolicyPathToEnableEVSigners ".\AllowMicrosoftPlusBlockRules.XML" } Set-HVCIOptions -Strict -FilePath .\AllowMicrosoftPlusBlockRules.XML ConvertFrom-CIPolicy .\AllowMicrosoftPlusBlockRules.XML "$PolicyID.cip" Remove-Item .\AllowMicrosoft.xml -Force Remove-Item '.\Microsoft recommended block rules.XML' -Force Write-host -NoNewline "AllowMicrosoftPlusBlockRules.XML policy with GUID" -ForegroundColor Green; Write-host -NoNewline " $PolicyID" -ForegroundColor Magenta; Write-host " has been created." -ForegroundColor Green if ($Deployit) { copy-Item -Path "$PolicyID.cip" -Destination "C:\Windows\System32\CodeIntegrity\CiPolicies\Active" Write-host "AllowMicrosoftPlusBlockRules.XML policy has been deployed and its GUID is $PolicyID" -ForegroundColor Cyan } } $Deploy_LatestDriverBlockRulesSCRIPTBLOCK = { Invoke-WebRequest -Uri "https://aka.ms/VulnerableDriverBlockList" -OutFile VulnerableDriverBlockList.zip Expand-Archive .\VulnerableDriverBlockList.zip -DestinationPath "VulnerableDriverBlockList" -Force Rename-Item .\VulnerableDriverBlockList\SiPolicy_Enforced.p7b -NewName "SiPolicy.p7b" -Force Copy-Item .\VulnerableDriverBlockList\SiPolicy.p7b -Destination "C:\Windows\System32\CodeIntegrity" citool --refresh -json Remove-Item .\VulnerableDriverBlockList -Recurse -Force Remove-Item .\VulnerableDriverBlockList.zip -Force } $Make_ScheduledTask_AutoUpdate_DriverBlockRulesSCRIPTBLOCK = { # create a scheduled task that runs every 7 days if (-NOT (Get-ScheduledTask -TaskName "MSFT Driver Block list update" -ErrorAction SilentlyContinue)) { $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};Expand-Archive .\VulnerableDriverBlockList.zip -DestinationPath "VulnerableDriverBlockList" -Force;Rename-Item .\VulnerableDriverBlockList\SiPolicy_Enforced.p7b -NewName "SiPolicy.p7b" -Force;Copy-Item .\VulnerableDriverBlockList\SiPolicy.p7b -Destination "C:\Windows\System32\CodeIntegrity";citool --refresh -json;Remove-Item .\VulnerableDriverBlockList -Recurse -Force;Remove-Item .\VulnerableDriverBlockList.zip -Force;}"' $TaskPrincipal = New-ScheduledTaskPrincipal -LogonType S4U -UserId $env:USERNAME -RunLevel Highest # trigger $Time = New-ScheduledTaskTrigger -Once -At (Get-Date).AddHours(1) -RepetitionInterval (New-TimeSpan -Days 7) # register the 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" # define advanced settings for the task $TaskSettings = New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries -Compatibility Win8 -StartWhenAvailable -ExecutionTimeLimit (New-TimeSpan -Minutes 3) # add advanced settings we defined to the task Set-ScheduledTask -TaskPath "MSFT Driver Block list update" -TaskName "MSFT Driver Block list update" -Settings $TaskSettings } } $Make_PolicyFromAuditLogsSCRIPTBLOCK = { # Make sure there is no lingering variable from previous runs - prevent the outfile from getting duplicate rules/ruleRefs if user run this script multiple times Remove-Variable * -ErrorAction SilentlyContinue # Create a working directory in user's folder new-item -Type Directory -Path "$home\WDAC" -Force | Out-Null Set-Location "$home\WDAC" # Take the AllowMicrosoft.xml policy file from Windows folder and use it as the base policy - reset its policy ID Copy-Item -Path C:\Windows\schemas\CodeIntegrity\ExamplePolicies\AllowMicrosoft.xml -Destination .\AllowMicrosoft.xml $BasePolicyID = Set-CIPolicyIdInfo -FilePath .\AllowMicrosoft.xml -ResetPolicyID $BasePolicyID = $BasePolicyID.Substring(11) # define the location of the base policy $BasePolicy = "$home\WDAC\AllowMicrosoft.xml" # produce policy XML file from event viewer logs Write-host "Scanning Windows Event logs and creating a policy file, please wait..." -ForegroundColor Cyan New-CIPolicy -FilePath .\WDAC_From_AuditEvents.xml -Audit -Level SignedVersion -Fallback FilePublisher, Hash -UserPEs -MultiplePolicyFormat -UserWriteablePaths -WarningAction SilentlyContinue # List every \Device\Harddiskvolume - Needed to resolve the file pathes to detect which files in even Event viewer logs are no longer present on the disk - https://superuser.com/questions/1058217/list-every-device-harddiskvolume $ScriptBlock = { $signature = @' [DllImport("kernel32.dll", SetLastError=true)] [return: MarshalAs(UnmanagedType.Bool)] public static extern bool GetVolumePathNamesForVolumeNameW([MarshalAs(UnmanagedType.LPWStr)] string lpszVolumeName, [MarshalAs(UnmanagedType.LPWStr)] [Out] StringBuilder lpszVolumeNamePaths, uint cchBuferLength, ref UInt32 lpcchReturnLength); [DllImport("kernel32.dll", SetLastError = true)] public static extern IntPtr FindFirstVolume([Out] StringBuilder lpszVolumeName, uint cchBufferLength); [DllImport("kernel32.dll", SetLastError = true)] public static extern bool FindNextVolume(IntPtr hFindVolume, [Out] StringBuilder lpszVolumeName, uint cchBufferLength); [DllImport("kernel32.dll", SetLastError = true)] public static extern uint QueryDosDevice(string lpDeviceName, StringBuilder lpTargetPath, int ucchMax); '@; Add-Type -MemberDefinition $signature -Name Win32Utils -Namespace PInvoke -Using PInvoke, System.Text; [UInt32] $lpcchReturnLength = 0; [UInt32] $Max = 65535 $sbVolumeName = New-Object System.Text.StringBuilder($Max, $Max) $sbPathName = New-Object System.Text.StringBuilder($Max, $Max) $sbMountPoint = New-Object System.Text.StringBuilder($Max, $Max) [IntPtr] $volumeHandle = [PInvoke.Win32Utils]::FindFirstVolume($sbVolumeName, $Max) do { $volume = $sbVolumeName.toString() $unused = [PInvoke.Win32Utils]::GetVolumePathNamesForVolumeNameW($volume, $sbMountPoint, $Max, [Ref] $lpcchReturnLength); $ReturnLength = [PInvoke.Win32Utils]::QueryDosDevice($volume.Substring(4, $volume.Length - 1 - 4), $sbPathName, [UInt32] $Max); if ($ReturnLength) { $DriveMapping = @{ DriveLetter = $sbMountPoint.toString() VolumeName = $volume DevicePath = $sbPathName.ToString() } Write-Output (New-Object PSObject -Property $DriveMapping) } else { Write-Output "No mountpoint found for: " + $volume } } while ([PInvoke.Win32Utils]::FindNextVolume([IntPtr] $volumeHandle, $sbVolumeName, $Max)); } # using script block here because otherwise this command and the command below wouldn't both output to the console $results = Invoke-Command -ScriptBlock $ScriptBlock #(resutt | Select-Object DriveLetter, DevicePath | Where-Object { $_.DriveLetter -ne ""}).driveletter #($results | Select-Object DriveLetter, DevicePath | Where-Object { $_.DriveLetter -ne ""}).devicepath #$results | Select-Object DriveLetter, DevicePath | Where-Object { $_.DriveLetter -ne ""} # Get Event viewer logs for code integrity - check the file path of all of the files in the log, resolve them using the command above - show files that are no longer available on the disk $block2 = { foreach ($event in Get-WinEvent -FilterHashtable @{LogName = 'Microsoft-Windows-CodeIntegrity/Operational'; ID = 3076 }) { $xml = [xml]$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 = $results | Where-Object { $_.devicepath -eq "\Device\HarddiskVolume$hardDiskVolumeNumber" } $usablePath = "$($getletter.DriveLetter)$remainingPath" $_.'File Name' = $_.'File Name' -replace $pattern, $usablePath } if (-NOT (Test-Path $_.'File Name')) { $_ | Select-Object FileVersion, 'File Name', PolicyGUID, 'SHA256 Hash', 'SHA256 Flat Hash', 'SHA1 Hash', 'SHA1 Flat Hash' } } } } # using script block here because otherwise this command and the command above wouldn't both output to the console $block2results = Invoke-Command -ScriptBlock $block2 # run the following only if there are any event logs for files no longer on the disk if ($block2results) { # Create File Rules based on hash of the files no longer available on the disk and store them in the $Rules variable $i = 1 $imax = ($block2results).count while ($i -le $imax) { $block2results | 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 $imax = ($block2results).count while ($i -le $imax) { $block2results | 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 the File Rules and File Rule Refs to the Out-File FileRulesAndFileRefs.txt in the current working directory $Rules + $RulesRefs | Out-File FileRulesAndFileRefs.txt $EmptyPolicy = @" <?xml version="1.0" encoding="utf-8"?> <SiPolicy xmlns="urn:schemas-microsoft-com:sipolicy" PolicyType="Base Policy"> <VersionEx>10.0.0.0</VersionEx> <PlatformID>{2E07F7E4-194C-4D20-B7C9-6F44A6C5A234}</PlatformID> <Rules> <Rule> <Option>Enabled:Unsigned System Integrity Policy</Option> </Rule> <Rule> <Option>Enabled:Audit Mode</Option> </Rule> <Rule> <Option>Enabled:Advanced Boot Options Menu</Option> </Rule> <Rule> <Option>Required:Enforce Store Applications</Option> </Rule> </Rules> <!--EKUS--> <EKUs /> <!--File Rules--> <FileRules> $Rules </FileRules> <!--Signers--> <Signers /> <!--Driver Signing Scenarios--> <SigningScenarios> <SigningScenario Value="131" ID="ID_SIGNINGSCENARIO_DRIVERS_1" FriendlyName="Auto generated policy on $(Get-Date -Format 'MM-dd-yyyy')"> <ProductSigners /> </SigningScenario> <SigningScenario Value="12" ID="ID_SIGNINGSCENARIO_WINDOWS" FriendlyName="Auto generated policy on $(Get-Date -Format 'MM-dd-yyyy')"> <ProductSigners> <FileRulesRef> $RulesRefs </FileRulesRef> </ProductSigners> </SigningScenario> </SigningScenarios> <UpdatePolicySigners /> <CiSigners /> <HvciOptions>0</HvciOptions> <BasePolicyID>{B163125F-E30A-43FC-ABEC-E30B4EE88FA8}</BasePolicyID> <PolicyID>{B163125F-E30A-43FC-ABEC-E30B4EE88FA8}</PolicyID> </SiPolicy> "@ $EmptyPolicy | Out-File .\DeletedFilesHashes.XML # Merge the policy file we created at first using Event Viewer logs, with the policy file we created for Hash of the files no longer available on the disk Merge-CIPolicy -PolicyPaths .\WDAC_From_AuditEvents.xml, .\DeletedFilesHashes.XML -OutputFilePath .\SupplementalPolicy.xml } # do this only if there are no event logs detected with files no longer on the disk, so we use the policy file creater earlier using Audit even logs else { Rename-Item .\WDAC_From_AuditEvents.xml -NewName "SupplementalPolicy.xml" -Force } $xml = [xml](Get-Content ".\SupplementalPolicy.xml") $PolicyID = $xml.SiPolicy.PolicyID Write-host "This is the GUID of the Supplemental Policy: $PolicyID" -ForegroundColor Cyan # Convert the SupplementalPolicy.XML policy file from base policy to supplemental policy of our base policy Set-CIPolicyIdInfo -FilePath ".\SupplementalPolicy.xml" -BasePolicyToSupplementPath $BasePolicy Set-CIPolicyIdInfo -PolicyName "Supplemental Policy made from Audit Event Logs on $(Get-Date -Format 'MM-dd-yyyy')" -FilePath ".\SupplementalPolicy.xml" # Set the base policy rule options @(0, 2, 5, 6, 11, 12, 16, 17, 19, 20) | ForEach-Object { Set-RuleOption -FilePath $BasePolicy -Option $_ } @(3, 4, 9, 10, 13, 14, 15, 18) | ForEach-Object { Set-RuleOption -FilePath $BasePolicy -Option $_ -Delete } if ($TestMode) { & $TestModeSCRIPTBLOCK -PolicyPathToEnableTesting $BasePolicy } if ($RequireEVSigners) { & $RequireEVSignersSCRIPTBLOCK -PolicyPathToEnableEVSigners $BasePolicy } # Set the Supplemental policy rule options @(0, 1, 2, 3, 4, 8, 9, 10, 11, 12, 15, 16, 17, 19, 20) | ForEach-Object { Set-RuleOption -FilePath ".\SupplementalPolicy.xml" -Option $_ -Delete } # Set the hypervisor Code Integrity option for Base and Supplemental policies to Strict Set-HVCIOptions -Strict -FilePath $BasePolicy Set-HVCIOptions -Strict -FilePath ".\SupplementalPolicy.xml" # convert the Supplemental Policy file to .cip binary file ConvertFrom-CIPolicy ".\SupplementalPolicy.xml" "$policyID.cip" # convert the Base policy file to .cip binary file Write-host "`nThis is the GUID of the Base Policy: $BasePolicyID" -ForegroundColor Cyan ConvertFrom-CIPolicy .\AllowMicrosoft.xml "$BasePolicyID.cip" if ($Deployit) { Copy-Item -Path "$BasePolicyID.cip", "$policyID.cip" -Destination "C:\Windows\System32\CodeIntegrity\CiPolicies\Active" -Force $IDToRemove = ((CiTool -lp -json | ConvertFrom-Json).Policies | Where-Object { $_.FriendlyName -eq "Prep_SystemFor_MSFTOnlyAudit" }).PolicyID CiTool --remove-policy "{$IDToRemove}" Write-host "System restart required to activate the deployed policies and to remove the Audit mode Prep policy" -ForegroundColor Green } else { do { $RemovalQuestion = $(Write-host "`nRemove the Audit mode MicrosoftOnly policy deployed during the prep phase? Enter 1 for Yes, 2 for No." -ForegroundColor Cyan; Read-Host) if ($RemovalQuestion -eq "1" ) { $IDToRemove = ((CiTool -lp -json | ConvertFrom-Json).Policies | Where-Object { $_.FriendlyName -eq "Prep_SystemFor_MSFTOnlyAudit" }).PolicyID CiTool --remove-policy "{$IDToRemove}" Write-host "System restart required to finish removing the Audit mode Prep policy" -ForegroundColor Green } if ($RemovalQuestion -eq "2" ) { Write-host "Skipping" -ForegroundColor Yellow } } until ($RemovalQuestion -eq "1" -or $RemovalQuestion -eq "2") } } $Prep_SystemFor_MSFTOnlyAuditSCRIPTBLOCK = { Copy-Item -Path C:\Windows\schemas\CodeIntegrity\ExamplePolicies\AllowMicrosoft.xml -Destination .\AllowMicrosoft.xml Set-RuleOption -FilePath .\AllowMicrosoft.xml -Option 3 $PolicyID = Set-CIPolicyIdInfo -FilePath .\AllowMicrosoft.xml -ResetPolicyID $PolicyID = $PolicyID.Substring(11) Set-CIPolicyIdInfo -PolicyName "Prep_SystemFor_MSFTOnlyAudit" -FilePath .\AllowMicrosoft.xml ConvertFrom-CIPolicy .\AllowMicrosoft.xml "$PolicyID.cip" Move-Item -Path "$PolicyID.cip" -Destination "C:\Windows\System32\CodeIntegrity\CiPolicies\Active" Write-host "The default AllowMicrosoft policy has been deployed in Audit mode. Restart the system." -ForegroundColor Magenta } $Make_LightlyManagedPolicySCRIPTBLOCK = { copy-item -Path "C:\Windows\schemas\CodeIntegrity\ExamplePolicies\AllowMicrosoft.xml" -Destination ".\AllowMicrosoft.xml" Invoke-Command -ScriptBlock $Get_RecommendedBlockRulesSCRIPTBLOCK Merge-CIPolicy -PolicyPaths .\AllowMicrosoft.xml, '.\Microsoft recommended block rules.XML' -OutputFilePath .\SignedAndReputable.xml @(0, 2, 6, 11, 12, 14, 15, 16, 17, 19, 20) | ForEach-Object { Set-RuleOption -FilePath .\SignedAndReputable.xml -Option $_ } @(3, 4, 9, 10, 13, 18) | ForEach-Object { Set-RuleOption -FilePath .\SignedAndReputable.xml -Option $_ -Delete } if ($TestMode) { & $TestModeSCRIPTBLOCK -PolicyPathToEnableTesting ".\SignedAndReputable.xml" } if ($RequireEVSigners) { & $RequireEVSignersSCRIPTBLOCK -PolicyPathToEnableEVSigners ".\SignedAndReputable.xml" } $BasePolicyID = Set-CiPolicyIdInfo -FilePath .\SignedAndReputable.xml -ResetPolicyID $BasePolicyID = $BasePolicyID.Substring(11) Set-HVCIOptions -Strict -FilePath .\SignedAndReputable.xml Set-CIPolicyIdInfo -PolicyName "SignedAndReputable policy deployed on $(Get-Date -Format 'MM-dd-yyyy')" -FilePath .\SignedAndReputable.xml Remove-Item .\AllowMicrosoft.xml -Force Remove-Item '.\Microsoft recommended block rules.XML' -Force Write-host -NoNewline "This is the PolicyID of the SignedAndReputable.xml:" -ForegroundColor Yellow; Write-host " $BasePolicyID" -ForegroundColor Magenta ConvertFrom-CIPolicy .\SignedAndReputable.xml "$BasePolicyID.cip" | Out-Null if ($Deployit) { Copy-Item -Path ".\$BasePolicyID.cip" -Destination "C:\Windows\System32\CodeIntegrity\CiPolicies\Active" Write-host -NoNewline "SignedAndReputable.xml policy with GUID" -ForegroundColor Green; Write-host -NoNewline " $BasePolicyID" -ForegroundColor Magenta; Write-host " has been deployed." -ForegroundColor Green appidtel start sc.exe config appidsvc start= auto } } $Sign_Deploy_PolicySCRIPTBLOCK = { foreach ($PolicyPath in $PolicyPaths) { $xml = [xml](Get-Content $PolicyPath) $PolicyType = $xml.SiPolicy.PolicyType if ($PolicyType -eq "Supplemental Policy") { Add-SignerRule -FilePath $PolicyPath -CertificatePath $CertPath -Update -User -Kernel } else { Add-SignerRule -FilePath $PolicyPath -CertificatePath $CertPath -Update -User -Kernel -Supplemental } Set-HVCIOptions -Strict -FilePath $PolicyPath Set-RuleOption -FilePath $PolicyPath -Option 6 -Delete $PolicyID = $xml.SiPolicy.PolicyID ConvertFrom-CIPolicy $PolicyPath "$PolicyID.cip" if ($SignToolPath) { $SignToolPath = $SignToolPath } else { if ($Env:PROCESSOR_ARCHITECTURE -eq "AMD64") { if ( Test-Path -Path "C:\Program Files (x86)\Windows Kits\*\bin\*\x64\signtool.exe") { $SignToolPath = "C:\Program Files (x86)\Windows Kits\*\bin\*\x64\signtool.exe" } else { Write-Error "signtool.exe couldn't be found" break } } elseif ($Env:PROCESSOR_ARCHITECTURE -eq "ARM64") { if (Test-Path -Path "C:\Program Files (x86)\Windows Kits\*\bin\*\arm64\signtool.exe") { $SignToolPath = "C:\Program Files (x86)\Windows Kits\*\bin\*\arm64\signtool.exe" } else { Write-Error "signtool.exe couldn't be found" break } } } & $SignToolPath sign -v -n $CertCN -p7 . -p7co 1.3.6.1.4.1.311.79.1 -fd certHash ".\$PolicyID.cip" Remove-Item ".\$PolicyID.cip" -Force Rename-Item "$PolicyID.cip.p7" -NewName "$PolicyID.cip" -Force Copy-Item -Path ".\$PolicyID.cip" -Destination "C:\Windows\System32\CodeIntegrity\CiPolicies\Active" $MountPoint = "C:\EFIMount" $EFIDestinationFolder = "$MountPoint\EFI\Microsoft\Boot\CiPolicies\Active" $EFIPartition = (Get-Partition | Where-Object IsSystem).AccessPaths[0] if (-Not (Test-Path $MountPoint)) { New-Item -Path $MountPoint -Type Directory -Force } mountvol $MountPoint $EFIPartition if (-Not (Test-Path $EFIDestinationFolder)) { New-Item -Path $EFIDestinationFolder -Type Directory -Force } Copy-Item -Path ".\$PolicyID.cip" -Destination $EFIDestinationFolder -Force mountvol $MountPoint /D Remove-Item "C:\EFIMount" -Recurse -Force Write-host "$PolicyID.cip has been Signed and Deployed." -ForegroundColor Green } } $Make_SupplementalPolicySCRIPTBLOCK = { foreach ($PolicyPath in $PolicyPaths) { New-CIPolicy -FilePath ".\SupplementalPolicy$SuppPolicyName.xml" -ScanPath $ScanLocation ` -Level SignedVersion -Fallback FilePublisher, Hash -UserPEs -MultiplePolicyFormat -UserWriteablePaths $policyID = Set-CiPolicyIdInfo -FilePath ".\SupplementalPolicy$SuppPolicyName.xml" -ResetPolicyID $policyID = $policyID.Substring(11) Set-CIPolicyIdInfo -FilePath ".\SupplementalPolicy$SuppPolicyName.xml" -BasePolicyToSupplementPath $PolicyPath @(0, 1, 2, 3, 4, 9, 10, 11, 12, 15, 16, 17, 19, 20) | ForEach-Object { Set-RuleOption -FilePath ".\SupplementalPolicy$SuppPolicyName.xml" -Option $_ -Delete } Set-HVCIOptions -Strict -FilePath ".\SupplementalPolicy$SuppPolicyName.xml" Set-CIPolicyIdInfo -PolicyName "$SuppPolicyName" -FilePath ".\SupplementalPolicy$SuppPolicyName.xml" ConvertFrom-CIPolicy ".\SupplementalPolicy$SuppPolicyName.xml" "$policyID.cip" if ($Deployit) { copy-Item -Path "$policyID.cip" -Destination "C:\Windows\System32\CodeIntegrity\CiPolicies\Active" Write-host -NoNewline "$policyID.cip for " -ForegroundColor Green; Write-host -NoNewline "$SuppPolicyName" -ForegroundColor Magenta; Write-host " has been deployed." -ForegroundColor Green Write-host "Policies are being refreshed, no reboot required." -ForegroundColor Yellow citool --refresh -json } } } $RemoveSignedPolicySCRIPTBLOCK = { foreach ($PolicyPath in $PolicyPaths) { # sanitize the policy file by removing SupplementalPolicySigners $xml = [xml](Get-Content $PolicyPath) $SuppSingerIDs = $xml.SiPolicy.SupplementalPolicySigners.SupplementalPolicySigner.SignerId if ($SuppSingerIDs) { Write-host "$($SuppSingerIDs.count) SupplementalPolicySigners have been found in the policy file, removing them now..." -ForegroundColor Yellow $SuppSingerIDs | ForEach-Object { $PolContent = Get-Content -Raw -Path $PolicyPath $PolContent -match "<Signer ID=`"$_`"[\S\s]*</Signer>" | Out-Null $PolContent = $PolContent -replace $Matches[0], "" Set-Content -Value $PolContent -Path $PolicyPath } $PolContent -match "<SupplementalPolicySigners>[\S\s]*</SupplementalPolicySigners>" | Out-Null $PolContent = $PolContent -replace $Matches[0], "" Set-Content -Value $PolContent -Path $PolicyPath # remove empty lines from the entire policy file (Get-Content -Path $PolicyPath) | Where-Object { $_.trim() -ne "" } | set-content -Path $PolicyPath -Force Write-host "Policy successfully sanitized and all SupplementalPolicySigners have been removed." -ForegroundColor Green } else { Write-host "`nNo sanitization required because no SupplementalPolicySigners have been found in the policy file." -ForegroundColor Green } Set-RuleOption -FilePath $PolicyPath -Option 6 $PolicyID = $xml.SiPolicy.PolicyID ConvertFrom-CIPolicy $PolicyPath "$PolicyID.cip" if ($SignToolPath) { $SignToolPath = $SignToolPath } else { if ($Env:PROCESSOR_ARCHITECTURE -eq "AMD64") { if ( Test-Path -Path "C:\Program Files (x86)\Windows Kits\*\bin\*\x64\signtool.exe") { $SignToolPath = "C:\Program Files (x86)\Windows Kits\*\bin\*\x64\signtool.exe" } else { Write-Error "signtool.exe couldn't be found" break } } elseif ($Env:PROCESSOR_ARCHITECTURE -eq "ARM64") { if (Test-Path -Path "C:\Program Files (x86)\Windows Kits\*\bin\*\arm64\signtool.exe") { $SignToolPath = "C:\Program Files (x86)\Windows Kits\*\bin\*\arm64\signtool.exe" } else { Write-Error "signtool.exe couldn't be found" break } } } & $SignToolPath sign -v -n $CertCN -p7 . -p7co 1.3.6.1.4.1.311.79.1 -fd certHash ".\$PolicyID.cip" Remove-Item ".\$PolicyID.cip" -Force Rename-Item "$PolicyID.cip.p7" -NewName "$PolicyID.cip" -Force Copy-Item -Path ".\$PolicyID.cip" -Destination "C:\Windows\System32\CodeIntegrity\CiPolicies\Active" -Force $MountPoint = "C:\EFIMount" $EFIDestinationFolder = "$MountPoint\EFI\Microsoft\Boot\CiPolicies\Active" $EFIPartition = (Get-Partition | Where-Object IsSystem).AccessPaths[0] if (-Not (Test-Path $MountPoint)) { New-Item -Path $MountPoint -Type Directory -Force } mountvol $MountPoint $EFIPartition Move-Item -Path ".\$PolicyID.cip" -Destination $EFIDestinationFolder -Force mountvol $MountPoint /D Remove-Item "C:\EFIMount" -Recurse -Force Write-host "$PolicyID.cip has been Re-signed and Re-deployed in Unsigned mode." -ForegroundColor Green } } $AfterRebootRemovalSCRIPTBLOCK = { foreach ($PolicyPath in $PolicyPaths) { $xml = [xml](Get-Content $PolicyPath) $PolicyID = $xml.SiPolicy.PolicyID Write-host "Please confirm the prompt twice to remove the policy from both WinDir and EFI partition." -ForegroundColor Cyan CiTool --remove-policy $PolicyID CiTool --remove-policy $PolicyID } } $ListActivePoliciesSCRIPTBLOCK = { Write-host "`nDisplaying non-System WDAC Policies:" -ForegroundColor Cyan (CiTool -lp -json | ConvertFrom-Json).Policies | Where-Object { $_.IsSystemPolicy -ne "True" } } $VerifyWDACStatusSCRIPTBLOCK = { Get-CimInstance -ClassName Win32_DeviceGuard -Namespace root\Microsoft\Windows\DeviceGuard | Select-Object -Property *codeintegrity* | Format-List Write-host "2 -> Enforced`n1 -> Audit mode`n0 -> Disabled/Not running`n" -ForegroundColor Cyan } $RemoveUNsignedPolicySCRIPTBLOCK = { foreach ($ID in $PolicyIDs ) { citool --remove-policy "{$ID}" } foreach ($PolicyName in $PolicyNames) { $NameID = ((CiTool -lp -json | ConvertFrom-Json).Policies | Where-Object { $_.FriendlyName -eq $PolicyName }).PolicyID citool --remove-policy "{$NameID}" } } $TestModeSCRIPTBLOCK = { param($PolicyPathToEnableTesting) @(9, 10) | ForEach-Object { Set-RuleOption -FilePath $PolicyPathToEnableTesting -Option $_ } } $RequireEVSignersSCRIPTBLOCK = { param($PolicyPathToEnableEVSigners) Set-RuleOption -FilePath $PolicyPathToEnableEVSigners -Option 8 } #endregion Script-Blocks #region function-processing if ($Get_RecommendedBlockRules) { Invoke-Command -ScriptBlock $Get_RecommendedBlockRulesSCRIPTBLOCK } if ($Get_RecommendedDriverBlockRules) { Invoke-Command -ScriptBlock $Get_RecommendedDriverBlockRulesSCRIPTBLOCK } if ($Make_AllowMSFT_WithReccBlockRules) { Invoke-Command -ScriptBlock $Make_AllowMSFT_WithReccBlockRulesSCRIPTBLOCK } if ($Deploy_LatestDriverBlockRules) { Invoke-Command -ScriptBlock $Deploy_LatestDriverBlockRulesSCRIPTBLOCK } if ($Make_ScheduledTask_AutoUpdate_DriverBlockRules) { Invoke-Command -ScriptBlock $Make_ScheduledTask_AutoUpdate_DriverBlockRulesSCRIPTBLOCK } if ($Make_PolicyFromAuditLogs) { Invoke-Command -ScriptBlock $Make_PolicyFromAuditLogsSCRIPTBLOCK } if ($Prep_SystemFor_MSFTOnlyAudit) { Invoke-Command -ScriptBlock $Prep_SystemFor_MSFTOnlyAuditSCRIPTBLOCK } if ($Make_LightlyManagedPolicy) { Invoke-Command -ScriptBlock $Make_LightlyManagedPolicySCRIPTBLOCK } if ($Sign_Deploy_Policy) { Invoke-Command -ScriptBlock $Sign_Deploy_PolicySCRIPTBLOCK } if ($Make_SupplementalPolicy) { Invoke-Command -ScriptBlock $Make_SupplementalPolicySCRIPTBLOCK } if ($RemoveSignedPolicy) { Invoke-Command -ScriptBlock $RemoveSignedPolicySCRIPTBLOCK } if ($AfterRebootRemoval) { Invoke-Command -ScriptBlock $AfterRebootRemovalSCRIPTBLOCK } if ($ListActivePolicies) { Invoke-Command -ScriptBlock $ListActivePoliciesSCRIPTBLOCK } if ($VerifyWDACStatus) { Invoke-Command -ScriptBlock $VerifyWDACStatusSCRIPTBLOCK } if ($RemoveUNsignedPolicy) { Invoke-Command -ScriptBlock $RemoveUNsignedPolicySCRIPTBLOCK } #endregion function-processing <# .SYNOPSIS Automate a lot of tasks related to WDAC (Windows Defender Application Control) .LINK https://github.com/HotCakeX/Harden-Windows-Security/wiki/New-ConfigWDAC .DESCRIPTION Using official Microsoft methods, configure and use Windows Defender Application Control .COMPONENT Windows Defender Application Control .FUNCTIONALITY Automate various tasks related to Windows Defender Application Control (WDAC) .PARAMETER Get_RecommendedBlockRules Create Microsoft recommended block rules XML policy and remove the allow rules .PARAMETER Get_RecommendedDriverBlockRules Create Microsoft recommended driver block rules XML policy and remove the allow rules .PARAMETER Make_AllowMSFT_WithReccBlockRules Make WDAC policy by merging AllowMicrosoft policy with the recommended block rules .PARAMETER Deploy_LatestDriverBlockRules Automatically download and deploy the latest Microsoft Recommended Driver Block Rules from Microsoft's source .PARAMETER Make_ScheduledTask_AutoUpdate_DriverBlockRules Make a Scheduled Task that automatically runs every 7 days to download the newest Microsoft Recommended driver block rules .PARAMETER Make_PolicyFromAuditLogs Make WDAC Policy from Audit event logs that also covers files no longer on disk .PARAMETER Prep_SystemFor_MSFTOnlyAudit Prepare the system for Audit mode using AllowMicrosoft example policy .PARAMETER Make_LightlyManagedPolicy Make WDAC Policy with ISG for Lightly Managed system .PARAMETER ListActivePolicies List the non-System WDAC Policies .PARAMETER VerifyWDACStatus Shows the status of User-mode and Kernel-mode Windows Defender Application Control deployments .PARAMETER Sign_Deploy_Policy Sign and deploy a WDAC policy .PARAMETER Make_SupplementalPolicy Make a Supplemental policy by scanning a directory .PARAMETER RemoveSignedPolicy Remove Signed WDAC Policies, can remove more than 1 at a time. .PARAMETER AfterRebootRemoval Complete removal of a Signed WDAC policy .PARAMETER RemoveUNsignedPolicy Removes Unsigned deployed WDAC policies, requires PolicyIDs as input, can remove more than 1 at a time. #> } # argument tab auto-completion for Policy IDs $ArgumentCompleterPolicyID = { ((CiTool -lp -json | ConvertFrom-Json).Policies | Where-Object { $_.IsSystemPolicy -ne "True" }).policyID } Register-ArgumentCompleter -CommandName "New-ConfigWDAC" -ParameterName "PolicyIDs" -ScriptBlock $ArgumentCompleterPolicyID # Set PSReadline tab completion to complete menu for easier access to available parameters - Only for the current session Set-PSReadlineKeyHandler -Key Tab -Function MenuComplete |