Detection rules › Sigma
UAC Bypass Using WOW64 Logger DLL Hijack
Detects the pattern of UAC Bypass using a WoW64 logger DLL hijack (UACMe 30)
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Privilege Escalation |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 10: ProcessAccess |
Rule body
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
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
SourceImage|contains: ':\Windows\SysWOW64\'
GrantedAccess: '0x1fffff'
CallTrace|startswith: 'UNKNOWN(0000000000000000)|UNKNOWN(0000000000000000)|'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CallTrace | starts_with |
| field:"CallTrace" kind:starts_with value:"UNKNOWN(0000000000000000)|UNKNOWN(0000000000000000)|" |
GrantedAccess | eq |
| field:"GrantedAccess" kind:eq value:"0x1fffff" |
SourceImage | match |
| field:"SourceImage" kind:match value:":\Windows\SysWOW64\" |