mirror of
https://github.com/Yamato-Security/WELA.git
synced 2025-12-06 09:12:46 +01:00
89 lines
5.7 KiB
PowerShell
89 lines
5.7 KiB
PowerShell
Import-Module -Name ./WELAFunctions.psm1
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Import-Module -Name ./WELAVerboseSecAudit.psm1
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$logo = @"
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┏┓┏┓┏┳━━━┳┓ ┏━━━┓
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┃┃┃┃┃┃┏━━┫┃ ┃┏━┓┃
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┃┃┃┃┃┃┗━━┫┃ ┃┃ ┃┃
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┃┗┛┗┛┃┏━━┫┃ ┏┫┗━┛┃
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┗┓┏┓┏┫┗━━┫┗━┛┃┏━┓┃
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┗┛┗┛┗━━━┻━━━┻┛ ┗┛
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by Yamato Security
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"@
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# Set the console encoding to UTF-8
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[Console]::OutputEncoding = [System.Text.Encoding]::UTF8
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# Step 1: Run the auditpol command using cmd.exe and redirect its output to a file
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$autidpolTxt = "auditpol_output.txt"
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Start-Process -FilePath "cmd.exe" -ArgumentList "/c chcp 437 & auditpol /get /category:* /r" -NoNewWindow -Wait -RedirectStandardOutput $autidpolTxt
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Write-Host $logo -ForegroundColor Green
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# Step 3: Set the applicable flag for each rule
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$rules = Set-Applicable -autidpolTxt $autidpolTxt -jsonRulePath "./config/security_rules.json"
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$allSecRules = $rules | Where-Object { $_.channel -eq "sec" }
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$allPwsRules = $rules | Where-Object { $_.channel -eq "pwsh" }
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$allPwsClaRules = $rules | Where-Object { $_.channel -eq "pwsh" -and ($_.event_ids -contains "400" -or $_.event_ids -contains "600" -or $_.event_ids.Count -eq 0) }
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$allPwsModRules = $rules | Where-Object { $_.channel -eq "pwsh" -and $_.event_ids -contains "4103" }
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$allPwsScrRules = $rules | Where-Object { $_.channel -eq "pwsh" -and $_.event_ids -contains "4104" }
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$usableSecRules = $rules | Where-Object { $_.applicable -eq $true -and $_.channel -eq "sec" }
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$usablePwsRules = $rules | Where-Object { $_.applicable -eq $true -and $_.channel -eq "pwsh" }
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$usablePwsClaRules = $rules | Where-Object { $_.applicable -eq $true -and $_.channel -eq "pwsh" -and ($_.event_ids -contains "400" -or $_.event_ids -contains "600" -or $_.event_ids.Count -eq 0) }
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$usablePwsModRules = $rules | Where-Object { $_.applicable -eq $true -and $_.channel -eq "pwsh" -and $_.event_ids -contains "4103" }
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$usablePwsScrRules = $rules | Where-Object { $_.applicable -eq $true -and $_.channel -eq "pwsh" -and $_.event_ids -contains "4104" }
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# Step 4: Count the number of usable and unusable rules for each level
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$totalCounts = Get-RuleCounts -rules $rules
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$totalSecCounts = Get-RuleCounts -rules $allSecRules
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$totalPwsCounts = Get-RuleCounts -rules $allPwsRules
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$totalPwsClaCounts = Get-RuleCounts -rules $allPwsClaRules
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$totalPwsModCounts = Get-RuleCounts -rules $allPwsModRules
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$totalPwsScrCounts = Get-RuleCounts -rules $allPwsScrRules
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$usableSecCounts = Get-RuleCounts -rules $usableSecRules
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$usablePwsCounts = Get-RuleCounts -rules $usablePwsRules
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$usablePwsClaCounts = Get-RuleCounts -rules $usablePwsClaRules
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$usablePwsModCounts = Get-RuleCounts -rules $usablePwsModRules
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$usablePwsScrCounts = Get-RuleCounts -rules $usablePwsScrRules
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# Step 5: Calculate the usable rate for each level
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$usableSecRate = CalculateUsableRate -counts $usableSecCounts -totalCounts $totalSecCounts
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$usablePwsRate = CalculateUsableRate -counts $usablePwsCounts -totalCounts $totalPwsCounts
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$usablePwsClaRate = CalculateUsableRate -counts $usablePwsClaCounts -totalCounts $totalPwsClaCounts
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$usablePwsModRate = CalculateUsableRate -counts $usablePwsModCounts -totalCounts $totalPwsModCounts
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$usablePwsScrRate = CalculateUsableRate -counts $usablePwsScrCounts -totalCounts $totalPwsScrCounts
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# Step 6: Show the number of usable and unusable rules for each level
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$pwsModEnabled = CheckRegistryValue -registryPath "HKLM:\SOFTWARE\Wow6432Node\Policies\Microsoft\Windows\PowerShell\ModuleLogging" -valueName "EnableModuleLogging" -expectedValue 1
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$pwsScrEnabled = CheckRegistryValue -registryPath "HKLM:\SOFTWARE\Wow6432Node\Policies\Microsoft\Windows\PowerShell\ScriptBlockLogging" -valueName "EnableScriptBlockLogging" -expectedValue 1
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$pwsModStatus = if ($pwsModEnabled) { "Enabled" } else { "Disabled" }
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$pwsSrcStatus = if ($pwsScrEnabled) { "Enabled" } else { "Disabled" }
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# Step 7: Calculate the total usable rate
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$totalUsableSecRate = CalculateTotalUsableRate -usableRate $usableSecRate
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$totalUsablePwsClaRate = CalculateTotalUsableRate -usableRate $usablePwsClaRate
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$totalUsablePwsModRate = CalculateTotalUsableRate -usableRate $usablePwsModRate
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$totalUsablePwsScrRate = CalculateTotalUsableRate -usableRate $usablePwsScrRate
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ShowRulesCountsByLevel -usableRate $usablePwsClaRate -msg "PowerShell classic logging detection rules: " -colorMsg "$totalUsablePwsClaRate (Enabled)"
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ShowRulesCountsByLevel -usableRate $usablePwsModRate -msg "PowerShell module logging detection rules: " -colorMsg "$totalUsablePwsModRate ($pwsModStatus)"
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ShowRulesCountsByLevel -usableRate $usablePwsScrRate -msg "PowerShell script block logging detection rules: " -colorMsg "$totalUsablePwsScrRate ($pwsSrcStatus)"
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ShowRulesCountsByLevel -usableRate $usableSecRate -msg "Security event log detection rules: " -colorMsg "$totalUsableSecRate (Partially Enabled)"
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ShowVerboseSecurity
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Write-Output "Usable detection rules list saved to: UsableRules.csv"
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Write-Output "Unusable detection rules list saved to: UnusableRules.csv"
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Write-Output ""
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$totalUsable = ($usableSecRate + $usablePwsRate | Measure-Object -Property UsableCount -Sum).Sum
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$totalRulesCount = ($totalCounts | Measure-Object -Property Count -Sum).Sum
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$utilizationPercentage = "{0:N2}" -f (($totalUsable / $totalRulesCount) * 100)
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Write-Output "You can utilize $utilizationPercentage% of your detection rules."
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# Step 8: Save the lists of usable and unusable rules to CSV files
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$unusableRules = $rules | Where-Object { $_.applicable -eq $false }
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$usableSecRules | Select-Object title, level, id | Export-Csv -Path "UsableRules.csv" -NoTypeInformation
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$unusableRules | Select-Object title, level, id | Export-Csv -Path "UnusableRules.csv" -NoTypeInformation
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