Possible Active Directory Certificate Services Denied Certificate Enrollment Request (via system)

title: Possible Active Directory Certificate Services Denied Certificate Enrollment Request (via system)
id: ee201819-7146-5fac-ace8-399a974a88df
status: stable
description: This rule detects denied requests by Active Directory Certificate Services. Example of these requests denial include issues with permissions on the certificate template or invalid signatures.
references:
    - https://attack.mitre.org/techniques/T1553/004/
    - https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/dd299871(v=ws.10)
    - https://www.gradenegger.eu/en/details-of-the-event-with-id-53-of-the-source-microsoft-windows-certificationauthority/
author: 'Huntrule Team'
date: 2026-07-02
tags:
    - attack.credential-access
    - attack.defense-impairment
    - attack.t1553.004
logsource:
    product: windows
    service: system
detection:
    selection:
        Provider_Name: 'Microsoft-Windows-CertificationAuthority'
        EventID: 53
    condition: selection
falsepositives:
    - Unknown
level: low