Ensure the common attachment types filter is enabled in the default anti-malware policy

보통레벨 1자동m365

설명

The common attachment filter blocks executable and script attachment types that are frequently used to deliver malware. Requires an already-connected Exchange Online session: Install-Module ExchangeOnlineManagement; Connect-ExchangeOnline (View-Only Organization Management is sufficient). The audit throws if no session exists.

점검 방법

감사 방식: 셸 명령

shell

$ErrorActionPreference = 'Stop'; if (-not (Get-Command Get-ConnectionInformation -ErrorAction SilentlyContinue) -or -not (Get-ConnectionInformation)) { throw 'Not connected: run Connect-ExchangeOnline first' }; $p = Get-MalwareFilterPolicy -Identity Default -ErrorAction Stop; if ($p.EnableFileFilter -eq $true) { 'compliant' } else { 'noncompliant' }

예상 출력: compliant

조치 방법

조치 방식: 가이드 또는 인프라 패치

Set-MalwareFilterPolicy -Identity Default -EnableFileFilter $true

속성

운영 체제: 모두
태그: m365malware
참고 자료: CIS Microsoft 365 Foundations Benchmark v7.0.0 - Exchange Online Protection / Anti-malware - common attachments filter (verify section number for your release)

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감사 권한이 있는 시스템에서 실행하세요. 스캔은 읽기 전용입니다.

shell

tmaegis scan --target m365