Detection rules › Sigma
UAC Bypass Using PkgMgr and DISM
Detects the pattern of UAC Bypass using pkgmgr.exe and dism.exe (UACMe 23)
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Privilege Escalation |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
| Security-Auditing | Event ID 4688: A new process has been created. |
Rule body
title: UAC Bypass Using PkgMgr and DISM
id: a743ceba-c771-4d75-97eb-8a90f7f4844c
status: test
description: Detects the pattern of UAC Bypass using pkgmgr.exe and dism.exe (UACMe 23)
references:
- https://github.com/hfiref0x/UACME
author: Christian Burkard (Nextron Systems)
date: 2021-08-23
modified: 2024-12-01
tags:
- attack.privilege-escalation
- attack.t1548.002
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|endswith: '\pkgmgr.exe'
Image|endswith: '\dism.exe'
IntegrityLevel:
- 'High'
- 'System'
- 'S-1-16-16384' # System
- 'S-1-16-12288' # High
condition: selection
falsepositives:
- Unknown
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
ParentImage|endswith: '\pkgmgr.exe'
Image|endswith: '\dism.exe'
IntegrityLevel:
- 'High'
- 'System'
- 'S-1-16-16384'
- 'S-1-16-12288'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
Image | ends_with |
| field:"Image" kind:ends_with value:"\dism.exe" |
IntegrityLevel | eq |
| field:"IntegrityLevel" kind:eq |
ParentImage | ends_with |
| field:"ParentImage" kind:ends_with value:"\pkgmgr.exe" |