Detection rules › Sigma
COLDSTEEL RAT Service Persistence Execution
Detects the creation of an "svchost" process with specific command line flags, that were seen present and used by ColdSteel RAT
Known false positives
- Unlikely
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | No specific technique |
| Stealth | No specific technique |
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: COLDSTEEL RAT Service Persistence Execution
id: 9f9cd389-cea0-4142-bf1a-a3fd424abedd
status: test
description: Detects the creation of an "svchost" process with specific command line flags, that were seen present and used by ColdSteel RAT
references:
- https://www.ncsc.gov.uk/static-assets/documents/malware-analysis-reports/cold-steel/NCSC-MAR-Cold-Steel.pdf
author: X__Junior (Nextron Systems)
date: 2023-04-30
tags:
- attack.persistence
- detection.emerging-threats
- attack.stealth
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith: '\svchost.exe'
CommandLine|endswith:
- ' -k msupdate'
- ' -k msupdate2'
- ' -k alg'
condition: selection
falsepositives:
- Unlikely
level: critical
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
Image|endswith: '\svchost.exe'
CommandLine|endswith:
- ' -k msupdate'
- ' -k msupdate2'
- ' -k alg'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | ends_with |
| field:"CommandLine" kind:ends_with |
Image | ends_with |
| field:"Image" kind:ends_with value:"\svchost.exe" |