UAC Bypass Using WOW64 Logger DLL Hijack — Sigma Rule

Rule metadata and linked tags

Author: Christian Burkard (Nextron Systems). Source status: test; severity: high. Source dates: 2021-08-23 / 2022-10-09.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 3b755be171ffd2c5e4031293bc0918e24227b8caef54e50f10a3d4ab088ff3bf

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: UAC Bypass Using WOW64 Logger DLL Hijack
id: 4f6c43e2-f989-4ea5-bcd8-843b49a0317c
status: test
description: Detects the pattern of UAC Bypass using a WoW64 logger DLL hijack (UACMe 30)
references:
    - https://github.com/hfiref0x/UACME
author: Christian Burkard (Nextron Systems)
date: 2021-08-23
modified: 2022-10-09
tags:
    - attack.privilege-escalation
    - attack.t1548.002
logsource:
    category: process_access
    product: windows
detection:
    selection:
        SourceImage|contains: ':\Windows\SysWOW64\'
        GrantedAccess: '0x1fffff'
        CallTrace|startswith: 'UNKNOWN(0000000000000000)|UNKNOWN(0000000000000000)|'
    condition: selection
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/hfiref0x/UACME