Detection rules › Sigma
Trickbot Malware Activity
Detects Trickbot malware process tree pattern in which "rundll32.exe" is a parent of "wermgr.exe"
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
Rule body
title: Trickbot Malware Activity
id: 58bf96d9-ff5f-44bd-8dcc-1c4f79bf3a27
related:
- id: c37510b8-2107-4b78-aa32-72f251e7a844
type: similar
status: stable
description: Detects Trickbot malware process tree pattern in which "rundll32.exe" is a parent of "wermgr.exe"
references:
- https://twitter.com/swisscom_csirt/status/1331634525722521602?s=20
- https://app.any.run/tasks/f74c5157-8508-4ac6-9805-d63fe7b0d399/
author: Florian Roth (Nextron Systems)
date: 2020-11-26
modified: 2021-11-27
tags:
- attack.execution
- attack.t1559
- detection.emerging-threats
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith: '\wermgr.exe'
ParentImage|endswith: '\rundll32.exe'
ParentCommandLine|contains: 'DllRegisterServer'
condition: selection
falsepositives:
- Unknown
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
Image|endswith: '\wermgr.exe'
ParentImage|endswith: '\rundll32.exe'
ParentCommandLine|contains: 'DllRegisterServer'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
Image | ends_with |
| field:"Image" kind:ends_with value:"\wermgr.exe" |
ParentCommandLine | match |
| field:"ParentCommandLine" kind:match value:"DllRegisterServer" |
ParentImage | ends_with |
| field:"ParentImage" kind:ends_with value:"\rundll32.exe" |