Unusual Sigverif.EXE Child Process (via process_creation)

title: Unusual Sigverif.EXE Child Process (via process_creation)
id: 321db201-9de7-5d8f-964d-78b055dd6afe
status: stable
description: This rule detects uncommon child processes spawning from "sigverif.exe", which could indicate potential misuse of the latter as a living of the land binary to proxy execution.
references:
    - https://attack.mitre.org/techniques/T1216/
    - https://www.hexacorn.com/blog/2018/04/27/i-shot-the-sigverif-exe-the-gui-based-lolbin/
    - https://twitter.com/0gtweet/status/1457676633809330184
author: Huntrule Team
date: 2026-01-13
tags:
    - attack.stealth
    - attack.t1216
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\sigverif.exe'
    filter_main_werfault:
        Image:
            - 'C:\Windows\System32\WerFault.exe'
            - 'C:\Windows\SysWOW64\WerFault.exe'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unknown
level: medium