sigmamediumHunting

Uncommon Sigverif.EXE Child Process

Detects uncommon child processes spawning from "sigverif.exe", which could indicate potential abuse of the latter as a living of the land binary in order to proxy execution.

MITRE ATT&CK

T1216

defense-evasion

Detection Query

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_*

Author

Nasreddine Bencherchali (Nextron Systems)

Created

2022-08-19

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.defense-evasionattack.t1216

Raw Content

title: Uncommon Sigverif.EXE Child Process
id: 7d4aaec2-08ed-4430-8b96-28420e030e04
status: test
description: |
    Detects uncommon child processes spawning from "sigverif.exe", which could indicate potential abuse of the latter as a living of the land binary in order to proxy execution.
references:
    - https://www.hexacorn.com/blog/2018/04/27/i-shot-the-sigverif-exe-the-gui-based-lolbin/
    - https://twitter.com/0gtweet/status/1457676633809330184
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-08-19
modified: 2024-08-27
tags:
    - attack.defense-evasion
    - 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