Vulnerable WinRing0 Driver Load — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems). Source status: test; severity: high. Source dates: 2022-07-26 / 2024-11-23.

{
  "product": "windows",
  "category": "driver_load"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: a4f7925c4634aa796c4b7e486871860a86150f6c10236097c623b5c20ded619c

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Vulnerable WinRing0 Driver Load
id: 1a42dfa6-6cb2-4df9-9b48-295be477e835
status: test
description: Detects the load of a signed WinRing0 driver often used by threat actors, crypto miners (XMRIG) or malware for privilege escalation
references:
    - https://github.com/xmrig/xmrig/tree/master/bin/WinRing0
    - https://www.rapid7.com/blog/post/2021/12/13/driver-based-attacks-past-and-present/
author: Florian Roth (Nextron Systems)
date: 2022-07-26
modified: 2024-11-23
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.t1543.003
logsource:
    product: windows
    category: driver_load
detection:
    selection:
        - Hashes|contains: 'IMPHASH=D41FA95D4642DC981F10DE36F4DC8CD7'
        - ImageLoaded|endswith:
              - '\WinRing0x64.sys'
              - '\WinRing0.sys'
              - '\WinRing0.dll'
              - '\WinRing0x64.dll'
              - '\winring00x64.sys'
    condition: selection
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/xmrig/xmrig/tree/master/bin/WinRing0
• https://www.rapid7.com/blog/post/2021/12/13/driver-based-attacks-past-and-present/