Windows Event ID 4692 – Microsoft-Windows-Security-Auditing: An attempt was made to backup the security audit policy

Start by examining the specific details of Event ID 4692 to understand the context of the backup attempt.

1. Open Event Viewer by pressing Win + R, typing eventvwr.msc, and pressing Enter
2. Navigate to Windows Logs → Security
3. Filter the log for Event ID 4692 by right-clicking the Security log and selecting Filter Current Log
4. Enter 4692 in the Event IDs field and click OK
5. Double-click on the most recent Event ID 4692 entry to view detailed information
6. Review the General tab for basic event information including timestamp and user account
7. Check the Details tab for XML data containing process information and backup parameters
8. Note the Subject section showing the security identifier and account name of the user who initiated the backup

Use PowerShell to programmatically retrieve and analyze Event ID 4692 occurrences for pattern analysis.

1. Open PowerShell as Administrator
2. Run the following command to retrieve recent Event ID 4692 entries:

Get-WinEvent -FilterHashtable @{LogName='Security'; Id=4692} -MaxEvents 50 | Format-Table TimeCreated, Id, LevelDisplayName, Message -Wrap

3. For more detailed analysis, extract specific properties:

Get-WinEvent -FilterHashtable @{LogName='Security'; Id=4692} -MaxEvents 10 | ForEach-Object {
    $xml = [xml]$_.ToXml()
    [PSCustomObject]@{
        TimeCreated = $_.TimeCreated
        UserName = $xml.Event.EventData.Data | Where-Object {$_.Name -eq 'SubjectUserName'} | Select-Object -ExpandProperty '#text'
        ProcessName = $xml.Event.EventData.Data | Where-Object {$_.Name -eq 'ProcessName'} | Select-Object -ExpandProperty '#text'
        BackupFile = $xml.Event.EventData.Data | Where-Object {$_.Name -eq 'BackupFile'} | Select-Object -ExpandProperty '#text'
    }
}

4. To check for failed backup attempts, correlate with other audit policy events:

Get-WinEvent -FilterHashtable @{LogName='Security'; Id=4719,4692} -MaxEvents 20 | Sort-Object TimeCreated

Check the current audit policy settings to understand what configuration is being backed up and ensure proper policy application.

1. Open Command Prompt as Administrator
2. Display current audit policy settings:

auditpol /get /category:*

3. Check for recent policy changes that might trigger backup operations:

auditpol /get /category:"Policy Change"

4. Review the backup file location if specified in the event details:

Get-ChildItem -Path "C:\Windows\System32\config" -Filter "*.csv" | Where-Object {$_.Name -like "*audit*"} | Sort-Object LastWriteTime -Descending

5. Verify Group Policy audit settings using PowerShell:

Get-GPO -All | Where-Object {$_.DisplayName -like "*audit*"} | ForEach-Object {
    Write-Host "GPO: $($_.DisplayName)"
    Get-GPOReport -Guid $_.Id -ReportType Xml | Select-String -Pattern "audit"
}

6. Check if the backup operation completed successfully by examining the backup file:

$BackupPath = "C:\temp\audit_backup.csv"
if (Test-Path $BackupPath) {
    Import-Csv $BackupPath | Select-Object -First 10
} else {
    Write-Host "Backup file not found at expected location"
}

Analyze the process and user context that initiated the audit policy backup to determine if the operation was legitimate or requires further investigation.

1. Extract detailed process information from the event XML:

$Events = Get-WinEvent -FilterHashtable @{LogName='Security'; Id=4692} -MaxEvents 5
foreach ($Event in $Events) {
    $xml = [xml]$Event.ToXml()
    $ProcessId = ($xml.Event.EventData.Data | Where-Object {$_.Name -eq 'ProcessId'}).'#text'
    $ProcessName = ($xml.Event.EventData.Data | Where-Object {$_.Name -eq 'ProcessName'}).'#text'
    $SubjectUserName = ($xml.Event.EventData.Data | Where-Object {$_.Name -eq 'SubjectUserName'}).'#text'
    
    Write-Host "Event Time: $($Event.TimeCreated)"
    Write-Host "Process: $ProcessName (PID: $ProcessId)"
    Write-Host "User: $SubjectUserName"
    Write-Host "---"
}

2. Check if the process is still running and gather additional context:

Get-Process | Where-Object {$_.ProcessName -like "*audit*" -or $_.ProcessName -eq "powershell" -or $_.ProcessName -eq "cmd"} | Select-Object ProcessName, Id, StartTime, CPU

3. Review recent logon events for the user account that initiated the backup:

Get-WinEvent -FilterHashtable @{LogName='Security'; Id=4624,4625} -MaxEvents 20 | Where-Object {$_.Message -like "*username_from_event*"} | Format-Table TimeCreated, Id, Message -Wrap

4. Check scheduled tasks that might be performing automated backups:

Get-ScheduledTask | Where-Object {$_.TaskName -like "*audit*" -or $_.TaskName -like "*backup*"} | ForEach-Object {
    $TaskInfo = Get-ScheduledTaskInfo -TaskName $_.TaskName
    [PSCustomObject]@{
        TaskName = $_.TaskName
        State = $_.State
        LastRunTime = $TaskInfo.LastRunTime
        NextRunTime = $TaskInfo.NextRunTime
        Author = $_.Author
    }
}

Implement comprehensive monitoring for audit policy backup operations to ensure proper oversight and rapid response to unauthorized changes.

1. Create a custom Windows Event Forwarding subscription for centralized monitoring:

<Subscription xmlns="http://schemas.microsoft.com/2006/03/windows/events/subscription">
    <SubscriptionId>AuditPolicyBackup</SubscriptionId>
    <SubscriptionType>SourceInitiated</SubscriptionType>
    <Description>Monitor audit policy backup operations</Description>
    <Enabled>true</Enabled>
    <Uri>http://schemas.microsoft.com/wbem/wsman/1/windows/EventLog</Uri>
    <Query>
        <![CDATA[
        <QueryList>
            <Query Id="0">
                <Select Path="Security">*[System[EventID=4692]]</Select>
            </Query>
        </QueryList>
        ]]>
    </Query>
</Subscription>

2. Set up PowerShell-based alerting using Windows Event Log monitoring:

# Create monitoring script
$ScriptBlock = {
    Register-WmiEvent -Query "SELECT * FROM Win32_NTLogEvent WHERE LogFile='Security' AND EventCode=4692" -Action {
        $Event = $Event.SourceEventArgs.NewEvent
        $Message = "Audit Policy Backup Detected: User=$($Event.User), Time=$($Event.TimeGenerated)"
        Write-EventLog -LogName Application -Source "Custom Monitor" -EventId 1001 -Message $Message
        # Add email notification or SIEM integration here
    }
}

# Register the event monitoring job
Start-Job -ScriptBlock $ScriptBlock -Name "AuditPolicyMonitor"

3. Configure Group Policy to audit policy change events:

Navigate to Computer Configuration → Windows Settings → Security Settings → Advanced Audit Policy Configuration → Policy Change and enable:

• Audit Policy Change - Success and Failure
• Audit Authentication Policy Change - Success and Failure

4. Create a custom PowerShell function for regular audit policy backup monitoring:

function Monitor-AuditPolicyBackups {
    param(
        [int]$Hours = 24,
        [string]$OutputPath = "C:\temp\audit_policy_report.csv"
    )
    
    $StartTime = (Get-Date).AddHours(-$Hours)
    $Events = Get-WinEvent -FilterHashtable @{
        LogName = 'Security'
        Id = 4692
        StartTime = $StartTime
    } -ErrorAction SilentlyContinue
    
    $Results = foreach ($Event in $Events) {
        $xml = [xml]$Event.ToXml()
        [PSCustomObject]@{
            TimeCreated = $Event.TimeCreated
            UserName = ($xml.Event.EventData.Data | Where-Object {$_.Name -eq 'SubjectUserName'}).'#text'
            ProcessName = ($xml.Event.EventData.Data | Where-Object {$_.Name -eq 'ProcessName'}).'#text'
            BackupFile = ($xml.Event.EventData.Data | Where-Object {$_.Name -eq 'BackupFile'}).'#text'
        }
    }
    
    $Results | Export-Csv -Path $OutputPath -NoTypeInformation
    Write-Host "Report saved to: $OutputPath"
    return $Results
}

# Usage example
Monitor-AuditPolicyBackups -Hours 168 # Last 7 days