Ensure 'Specify the interval to check for security intelligence updates' is set to 'Enabled: 4' or fewer, but not '0'

보통레벨 1자동defender

설명

This policy setting configures an interval at which to check for security intelligence updates. Security intelligence updates are the continuously updated packages that Microsoft Defender Antivirus uses to recognize, classify, and block the latest malware, spyware, unwanted software, and potentially harmful behaviors. The recommended state for this setting is: Enabled: 4 or fewer, but not 0. Rationale: A malware scan is only as effective as the threat definitions it uses. Running a scan with outdated intelligence significantly reduces detection accuracy and can create a false sense of security. 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\SignatureUpdates:SignatureUpdateInterval (REG_DWORD); compliant when it is 4 or 3 or 2 or 1. Remediation writes 4 locally; in a domain set it through the ADMX so Group Policy does not revert it.

점검 방법

감사 방식: Windows 레지스트리

registry

$v = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\SignatureUpdates' -Name 'SignatureUpdateInterval' -ErrorAction SilentlyContinue).'SignatureUpdateInterval'; if ($null -eq $v) { 'unset' } elseif (($null -ne $v -and @(4,3,2,1) -contains [int64]$v)) { 'compliant' } else { "non-compliant: $v" }

예상 출력: compliant

조치 방법

조치 방식: 셸 명령

shell

$p = 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\SignatureUpdates'; if (-not (Test-Path -Path $p)) { New-Item -Path $p -Force | Out-Null }; New-ItemProperty -Path $p -Name 'SignatureUpdateInterval' -Value 4 -PropertyType DWord -Force | Out-Null

속성

운영 체제: 모두
태그: defenderantiviruscis-l1
참고 자료: CIS Microsoft Defender Antivirus Benchmark v1.0.0 - 1.14.1 Ensure 'Specify the interval to check for security intelligence updates' is set to 'Enabled: 4' or fewer, but not '0'

이 호스트 점검하기

감사 권한이 있는 시스템에서 실행하세요. 스캔은 읽기 전용입니다.

shell

tmaegis scan --target defender