Ensure 'Configure Attack Surface Reduction rules: Set the state for each ASR rule' is set to '33ddedf1-c6e0-47cb-833e- de6133960387:1'

ÉlevéeNiveau 1Automatiséedefender

Description

This rule prevents the execution of certain commands to restart the system in Safe Mode. Rule ID and name: - 33ddedf1-c6e0-47cb-833e-de6133960387 (Block rebooting machine in Safe Mode) The recommended state for this setting is: 33ddedf1-c6e0-47cb-833e- de6133960387:1 (Block). Rationale: Attack surface reduction helps prevent actions and apps that are typically used by exploit-seeking malware to infect machines. Audit reads the Group Policy registry value and prints 'compliant', 'unset' (policy not configured, reported as FAIL) or the non-compliant value. Registry value: HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Windows Defender Exploit Guard\ASR\Rules:33ddedf1-c6e0-47cb-833e-de6133960387 (REG_SZ); compliant when it is 1.

Méthode de vérification

Méthode d'audit: Registre Windows

registry

$v = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Windows Defender Exploit Guard\ASR\Rules' -Name '33ddedf1-c6e0-47cb-833e-de6133960387' -ErrorAction SilentlyContinue).'33ddedf1-c6e0-47cb-833e-de6133960387'; if ($null -eq $v) { 'unset' } elseif (($null -ne $v -and @('1') -contains "$v")) { 'compliant' } else { "non-compliant: $v" }

Sortie attendue: compliant

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

Configure through Group Policy: Computer Configuration\Policies\Administrative Templates\Windows Components\Microsoft Defender Antivirus\Microsoft Defender Exploit Guard\Attack Surface Reduction\Configure Attack Surface Reduction rules: Set the state for each ASR rule = 33ddedf1-c6e0-47cb-833e-de6133960387 with a value of 1. Test in audit mode (2) first. Local alternative (writes Defender preferences, not the Group Policy value this audit reads): Add-MpPreference -AttackSurfaceReductionRules_Ids 33ddedf1-c6e0-47cb-833e-de6133960387 -AttackSurfaceReductionRules_Actions 1

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: defenderantiviruscis-l1
Référence: CIS Microsoft Defender Antivirus Benchmark v1.0.0 - 1.6.1.14 Ensure 'Configure Attack Surface Reduction rules: Set the state for each ASR rule' is set to '33ddedf1-c6e0-47cb-833e- de6133960387:1'

Vérifier cet hôte

Exécutez cette commande sur une machine que vous êtes autorisé à auditer. L'analyse est en lecture seule.

shell

tmaegis scan --target defender