TMA-INTUNE-DEFENDER-2.16

Ensure 'ASR: Block execution of potentially obfuscated scripts' is set to 'Audit' or higher

MediaNivel 1Automatizadaintune-defender

Descripción

This rule detects suspicious properties within an obfuscated script. The recommended state for this setting is: Audit. Configuring this setting to Block also conforms to the benchmark. Audit: reads the Intune PolicyManager ASR rules value (via the WinningProvider GUID) and requires the rule entry 5beb7efe-fd9a-4556-801d-275e5ffc04cc=1 or 5beb7efe-fd9a-4556-801d-275e5ffc04cc=2 (Block, or Audit for the "Audit or higher" wording).

Cómo se verifica

Método de auditoría: Registro de Windows

registry

$p = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\current\device\Defender' -Name 'AttackSurfaceReductionRules_WinningProvider' -ErrorAction SilentlyContinue).'AttackSurfaceReductionRules_WinningProvider'; if (-not $p) { 'non-compliant: no ASR WinningProvider' } else { $p = ([string]$p).Trim('{}'); $k = 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\Providers\' + $p + '\default\Device\Defender'; if (-not (Test-Path $k)) { $k = 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\Providers\{' + $p + '}\default\Device\Defender' }; $v = (Get-ItemProperty -Path $k -Name 'AttackSurfaceReductionRules' -ErrorAction SilentlyContinue).'AttackSurfaceReductionRules'; $have = @(([string]$v) -split '\|' | ForEach-Object { $_.Trim().ToLower() }); $want = @('5beb7efe-fd9a-4556-801d-275e5ffc04cc=1','5beb7efe-fd9a-4556-801d-275e5ffc04cc=2'); if (@($want | Where-Object { $have -contains $_ }).Count -gt 0) { 'compliant' } else { 'non-compliant: ' + $v } }

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

To establish the recommended configuration via configuration profiles, set the following Settings Catalog path to Audit or Block. Defender\Block execution of potentially obfuscated scripts

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: intune-defenderintuneregistry
Referencia: CIS Microsoft Intune for Microsoft Defender Antivirus Benchmark v1.0.0 - 2.16 Ensure 'ASR: Block execution of potentially obfuscated scripts' is set to 'Audit' or higher

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell

tmaegis scan --target intune-defender