TMA-INTUNE-DEFENDER-2.13
Ensure 'ASR: Block credential stealing from the Windows local security authority subsystem' is set to 'Block'
MediaNivel 1Automatizadaintune-defender
Descripción
This rule helps prevent credential stealing by locking down Local Security Authority Subsystem Service (LSASS). The recommended state for this setting is: Block. Audit: reads the Intune PolicyManager ASR rules value (via the WinningProvider GUID) and requires the rule entry 9e6c4e1f-7d60-472f-ba1a-a39ef669e4b2=1 (Block).
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() }); $want = @('9e6c4e1f-7d60-472f-ba1a-a39ef669e4b2=1'); if (@($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 Block. Defender\Block credential stealing from the Windows local security authority subsystem
Propiedades
- Sistemas operativos
- Cualquiera
- Etiquetas
- intune-defenderintuneregistry
- Referencia
- CIS Microsoft Intune for Microsoft Defender Antivirus Benchmark v1.0.0 - 2.13 Ensure 'ASR: Block credential stealing from the Windows local security authority subsystem' is set to 'Block'
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