TMA-DEFENDER-1.6.1.11

Ensure 'Configure Attack Surface Reduction rules: Set the state for each ASR rule' is set to '75668c1f-73b5-4cf0-bb93- 3ecf5cb7cc84:1'

AltaNivel 1Automatizadadefender

Descripción

This rule blocks Office apps from injecting code into other processes. Office apps included in this setting are Word, Excel, PowerPoint, and OneNote. Rule ID and name: - 75668c1f-73b5-4cf0-bb93-3ecf5cb7cc84 (Block Office applications from injecting code into other processes) The recommended state for this setting is: 75668c1f-73b5-4cf0-bb93- 3ecf5cb7cc84:1 (Block). Rationale: Attack surface reduction helps prevent actions and apps that are typically used by exploit-seeking malware to infect machines. Attackers might attempt to use Office apps to migrate malicious code into other processes through code injection, so the code can masquerade as a clean process. 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:75668c1f-73b5-4cf0-bb93-3ecf5cb7cc84 (REG_SZ); compliant when it is 1.

Cómo se verifica

Método de auditoría: Registro de Windows

registry

$v = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Windows Defender Exploit Guard\ASR\Rules' -Name '75668c1f-73b5-4cf0-bb93-3ecf5cb7cc84' -ErrorAction SilentlyContinue).'75668c1f-73b5-4cf0-bb93-3ecf5cb7cc84'; if ($null -eq $v) { 'unset' } elseif (($null -ne $v -and @('1') -contains "$v")) { 'compliant' } else { "non-compliant: $v" }

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

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 = 75668c1f-73b5-4cf0-bb93-3ecf5cb7cc84 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 75668c1f-73b5-4cf0-bb93-3ecf5cb7cc84 -AttackSurfaceReductionRules_Actions 1

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: defenderantiviruscis-l1
Referencia: CIS Microsoft Defender Antivirus Benchmark v1.0.0 - 1.6.1.11 Ensure 'Configure Attack Surface Reduction rules: Set the state for each ASR rule' is set to '75668c1f-73b5-4cf0-bb93- 3ecf5cb7cc84:1'

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell

tmaegis scan --target defender