PowerPoint: Disable 'Run Programs' From Presentations

πŸ’Ό Management Samenvatting

Disable 'Run programs' action in PowerPoint - prevents presentations from launching executables (click-to-execute malware).

Aanbeveling
IMPLEMENT
Risico zonder
High
Risk Score
8/10
Implementatie
2u (tech: 1u)
Van toepassing op:
βœ“ Microsoft PowerPoint

PowerPoint 'Run program' = code execution: PowerPoint feature: Action Settings β†’ 'Run program' (launch .exe on slide click), Attack vector: Malicious presentation β†’ slide with 'Run program' action β†’ user clicks β†’ malware.exe executes, Social engineering: 'Click here to view video' (actually runs trojan), Legacy feature: Rarely used (modern: embedded videos, hyperlinks). Defense: Disable 'Run program' β†’ action not available β†’ malware cannot execute via presentation.

PowerShell Modules Vereist
Primary API: Intune / GPO
Connection: Registry-based
Required Modules:

Implementatie

Disable run programs: Policy: Disable commands: 'Run program', Effect: PowerPoint action settings: 'Run program' option grayed out/removed, Alternatives: Hyperlinks (open URLs), Embedded media (videos), User impact: MINIMAL (feature rarely used legitimately).

Vereisten

  1. PowerPoint 2016+
  2. Intune of GPO

Implementatie

Intune Settings Catalog: PowerPoint\Security\Trust Center β†’ Disable commands: Run programs. Effect: 'Run program' action disabled in Action Settings.

Compliance

DISA STIG Office, BIO 12.02, ISO 27001 A.12.2.1, CIS Office Benchmark.

Monitoring

Gebruik PowerShell-script run-programs-disabled.ps1 (functie Invoke-Monitoring) – Controleren.

Remediatie

Gebruik PowerShell-script run-programs-disabled.ps1 (functie Invoke-Remediation) – Herstellen.

Compliance & Frameworks

Automation

Gebruik het onderstaande PowerShell script om deze security control te monitoren en te implementeren. Het script bevat functies voor zowel monitoring (-Monitoring) als remediation (-Remediation).

PowerShell
<# .SYNOPSIS Schakelt programma uitvoering uit in PowerPoint .DESCRIPTION Dit script implementeert CIS control O365-PT-000002 voor het uitschakelen van de mogelijkheid om programma's uit te voeren vanuit Microsoft PowerPoint. Dit voorkomt dat presentaties automatisch externe programma's kunnen starten, wat een ernstig beveiligingsrisico vormt. .REQUIREMENTS - PowerShell 5.1 of hoger - Lokale administrator rechten voor registry wijzigingen - Microsoft PowerPoint geΓ―nstalleerd .PARAMETER Monitoring Controleert de huidige compliance status .PARAMETER Remediation Past de aanbevolen configuratie toe .PARAMETER Revert Herstelt de originele configuratie .PARAMETER WhatIf Toont wat er zou gebeuren zonder wijzigingen door te voeren .EXAMPLE .\run-programs-disabled.ps1 -Monitoring Controleert of programma uitvoering is uitgeschakeld .EXAMPLE .\run-programs-disabled.ps1 -Remediation Schakelt programma uitvoering uit .NOTES Registry pad: HKCU:\Software\Policies\Microsoft\Office\16.0\PowerPoint\Security Waarde: RunPrograms = 0 CIS Control: O365-PT-000002 DISA STIG: Microsoft Office 365 ProPlus v3r3 #> #Requires -Version 5.1 param( [switch]$Monitoring, [switch]$Remediation, [switch]$Revert, [switch]$WhatIf ) # Globale variabelen $RegistryPath = "HKCU:\Software\Policies\Microsoft\Office\16.0\PowerPoint\Security" $ValueName = "RunPrograms" $ExpectedValue = 0 $ControlID = "O365-PT-000002" function Test-Compliance { try { if (-not (Test-Path $RegistryPath)) { return $false } $currentValue = Get-ItemProperty -Path $RegistryPath -Name $ValueName -ErrorAction SilentlyContinue return ($currentValue -and $currentValue.$ValueName -eq $ExpectedValue) } catch { return $false } } function Invoke-Monitoring { Write-Host "Monitoring ${ControlID}: Programma uitvoering uitschakelen" -ForegroundColor Green try { if (-not (Test-Path $RegistryPath)) { Write-Host "βœ— Registry pad bestaat niet: $RegistryPath" -ForegroundColor Red return $false } $currentValue = Get-ItemProperty -Path $RegistryPath -Name $ValueName -ErrorAction SilentlyContinue if ($currentValue -and $currentValue.$ValueName -eq $ExpectedValue) { Write-Host "βœ“ Control compliant: ${ValueName} = $ExpectedValue (Programma uitvoering uitgeschakeld)" -ForegroundColor Green return $true } else { $actualValue = if ($currentValue) { $currentValue.$ValueName } else { "Not Set" } Write-Host "βœ— Control non-compliant: ${ValueName} = $actualValue (Expected: $ExpectedValue)" -ForegroundColor Red return $false } } catch { Write-Host "βœ— Fout bij controleren registry instelling: $($_.Exception.Message)" -ForegroundColor Red return $false } } function Invoke-Remediation { Write-Host "Remediating ${ControlID}: Programma uitvoering uitschakelen" -ForegroundColor Yellow try { if ($WhatIf) { Write-Host "WhatIf: Zou registry waarde instellen: ${ValueName} = $ExpectedValue" -ForegroundColor Cyan return $true } if (-not (Test-Path $RegistryPath)) { Write-Host "Registry pad aanmaken: $RegistryPath" -ForegroundColor Yellow New-Item -Path $RegistryPath -Force | Out-Null } Set-ItemProperty -Path $RegistryPath -Name $ValueName -Value $ExpectedValue -Type DWord -Force Write-Host "βœ“ Registry waarde succesvol ingesteld: ${ValueName} = $ExpectedValue" -ForegroundColor Green Start-Sleep -Seconds 1 return Invoke-Monitoring } catch { Write-Host "βœ— Fout bij configureren registry instelling: $($_.Exception.Message)" -ForegroundColor Red return $false } } function Invoke-Revert { Write-Host "Reverting ${ControlID}: Programma uitvoering instelling herstellen" -ForegroundColor Yellow try { if ($WhatIf) { Write-Host "WhatIf: Zou registry waarde verwijderen: ${ValueName}" -ForegroundColor Cyan return $true } if (Test-Path $RegistryPath) { Remove-ItemProperty -Path $RegistryPath -Name $ValueName -ErrorAction SilentlyContinue Write-Host "βœ“ Registry waarde verwijderd: ${ValueName}" -ForegroundColor Green } return $true } catch { Write-Host "βœ— Fout bij herstellen registry instelling: $($_.Exception.Message)" -ForegroundColor Red return $false } } # Hoofd uitvoering try { if ($Monitoring) { $result = Invoke-Monitoring exit $(if ($result) { 0 } else { 1 }) } elseif ($Remediation) { $result = Invoke-Remediation exit $(if ($result) { 0 } else { 1 }) } elseif ($Revert) { $result = Invoke-Revert exit $(if ($result) { 0 } else { 1 }) } else { Write-Host "Gebruik: .\run-programs-disabled.ps1 [-Monitoring] [-Remediation] [-Revert] [-WhatIf]" -ForegroundColor Yellow Write-Host " -Monitoring: Controleer huidige compliance status" -ForegroundColor White Write-Host " -Remediation: Pas aanbevolen configuratie toe" -ForegroundColor White Write-Host " -Revert: Herstel originele configuratie" -ForegroundColor White Write-Host " -WhatIf: Toon wat er zou gebeuren" -ForegroundColor White Write-Host "" Write-Host "Handmatige configuratie:" -ForegroundColor Cyan Write-Host "Group Policy: User Configuration > Administrative Templates > Microsoft PowerPoint 2016" -ForegroundColor White Write-Host "> PowerPoint Options > Security" -ForegroundColor White Write-Host "> Run Programs: Enabled: disable (don't run any programs)" -ForegroundColor White } } catch { Write-Host "βœ— Onverwachte fout: $($_.Exception.Message)" -ForegroundColor Red exit 1 }

Risico zonder implementatie

Risico zonder implementatie
High: Hoog: 'Run program' = click-to-execute malware (social engineering).

Management Samenvatting

Disable PowerPoint 'Run program' action. Code execution prevention. Zero business impact (legacy feature). Implementatie: 1-2 uur.