Ensure 'Configure Attack Surface Reduction rules: Set the state for each ASR rule' is set to 'b2b3f03d-6a65-4f7b-a9c7- 1c7ef74a9ba4:1'

높음레벨 1자동defender

설명

With this rule, admins can prevent unsigned or untrusted executable files from running from USB removable drives, including SD cards. Blocked file types include executable files (such as .exe, .dll, or .scr). Rule ID and name: - b2b3f03d-6a65-4f7b-a9c7-1c7ef74a9ba4 (Block untrusted and unsigned processes that run from USB) The recommended state for this setting is: b2b3f03d-6a65-4f7b-a9c7- 1c7ef74a9ba4:1 (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:b2b3f03d-6a65-4f7b-a9c7-1c7ef74a9ba4 (REG_SZ); compliant when it is 1.

점검 방법

감사 방식: Windows 레지스트리

registry

$v = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Windows Defender Exploit Guard\ASR\Rules' -Name 'b2b3f03d-6a65-4f7b-a9c7-1c7ef74a9ba4' -ErrorAction SilentlyContinue).'b2b3f03d-6a65-4f7b-a9c7-1c7ef74a9ba4'; if ($null -eq $v) { 'unset' } elseif (($null -ne $v -and @('1') -contains "$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 = b2b3f03d-6a65-4f7b-a9c7-1c7ef74a9ba4 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 b2b3f03d-6a65-4f7b-a9c7-1c7ef74a9ba4 -AttackSurfaceReductionRules_Actions 1

속성

운영 체제: 모두
태그: defenderantiviruscis-l1
참고 자료: CIS Microsoft Defender Antivirus Benchmark v1.0.0 - 1.6.1.15 Ensure 'Configure Attack Surface Reduction rules: Set the state for each ASR rule' is set to 'b2b3f03d-6a65-4f7b-a9c7- 1c7ef74a9ba4:1'

이 호스트 점검하기

감사 권한이 있는 시스템에서 실행하세요. 스캔은 읽기 전용입니다.

shell

tmaegis scan --target defender