Ensure 'Configure Attack Surface Reduction rules: Set the state for each ASR rule' is set to 'd4f940ab-401b-4efc-aadc- ad5f3c50688a:2' or higher

높음레벨 1자동defender

설명

This rule blocks Office apps from creating child processes. Office apps include Word, Excel, PowerPoint, OneNote, and Access. Rule ID and name: - d4f940ab-401b-4efc-aadc-ad5f3c50688a (Block all Office applications from creating child processes) The recommended state for this setting is: d4f940ab-401b-4efc-aadc- ad5f3c50688a:2 (Audit) or higher. Rationale: Attack surface reduction helps prevent actions and apps that are typically used by exploit-seeking malware to infect machines. Creating malicious child processes is a common malware strategy. 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:d4f940ab-401b-4efc-aadc-ad5f3c50688a (REG_SZ); compliant when it is 2 or 1.

점검 방법

감사 방식: Windows 레지스트리

registry

$v = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Windows Defender Exploit Guard\ASR\Rules' -Name 'd4f940ab-401b-4efc-aadc-ad5f3c50688a' -ErrorAction SilentlyContinue).'d4f940ab-401b-4efc-aadc-ad5f3c50688a'; if ($null -eq $v) { 'unset' } elseif (($null -ne $v -and @('2','1') -contains "$v")) { 'compliant' } else { "non-compliant: $v" }

예상 출력: compliant

조치 방법

조치 방식: 가이드 또는 인프라 패치

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 = d4f940ab-401b-4efc-aadc-ad5f3c50688a with a value of 2 or 1. Test in audit mode (2) first. Local alternative (writes Defender preferences, not the Group Policy value this audit reads): Add-MpPreference -AttackSurfaceReductionRules_Ids d4f940ab-401b-4efc-aadc-ad5f3c50688a -AttackSurfaceReductionRules_Actions 2

속성

운영 체제: 모두
태그: defenderantiviruscis-l1
참고 자료: CIS Microsoft Defender Antivirus Benchmark v1.0.0 - 1.6.1.4 Ensure 'Configure Attack Surface Reduction rules: Set the state for each ASR rule' is set to 'd4f940ab-401b-4efc-aadc- ad5f3c50688a:2' or higher

이 호스트 점검하기

감사 권한이 있는 시스템에서 실행하세요. 스캔은 읽기 전용입니다.

shell

tmaegis scan --target defender