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
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | No specific technique |
| Stealth | No specific technique |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Sysmon | Event ID 1 | Process creation |
| Security-Auditing | Event ID 4688 | A new process has been created. |
Rule body yaml
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
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
CommandLine | ends_with |
|
Image | ends_with |
|