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

CaoCấp 1Tự độngdefender

Mô tả

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.

Cách kiểm tra

Phương pháp kiểm tra: Windows Registry

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" }

Đầu ra mong đợi: compliant

Cách khắc phục

Phương pháp khắc phục: Hướng dẫn hoặc bản vá hạ tầng

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

Thuộc tính

Hệ điều hành: Bất kỳ
Thẻ: defenderantiviruscis-l1
Tham chiếu: 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

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shell

tmaegis scan --target defender