blue-team-tools/rules/windows/builtin/security/win_security_codeintegrity_check_failure.yml

title: Failed Code Integrity Checks
id: 470ec5fa-7b4e-4071-b200-4c753100f49b
status: stable
description: |
    Detects code integrity failures such as missing page hashes or corrupted drivers due unauthorized modification. This could be a sign of tampered binaries.
references:
    - https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/event-5038
    - https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/event-6281
author: Thomas Patzke
date: 2019-12-03
modified: 2025-01-19
tags:
    - attack.defense-evasion
    - attack.t1027.001
logsource:
    product: windows
    service: security
detection:
    selection:
        EventID:
            - 5038
            - 6281
    filter_optional_crowdstrike:
        param1|contains:
            - '\CSFalconServiceUninstallTool_'
            - '\Program Files\CrowdStrike\'
            - '\System32\drivers\CrowdStrike\'
            - '\Windows\System32\ScriptControl64_'
    filter_optional_sophos:
        param1|contains: '\Program Files\Sophos\'
    condition: selection and not 1 of filter_optional_*
falsepositives:
    - Disk device errors
level: informational