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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