Detection rules › Sigma
COLDSTEEL RAT Anonymous User Process Execution
Detects the creation of a process executing as user called "ANONYMOUS" seen used by the "MileStone2016" variant of COLDSTEEL
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 Anonymous User Process Execution
id: e01b6eb5-1eb4-4465-a165-85d40d874add
status: test
description: Detects the creation of a process executing as user called "ANONYMOUS" seen used by the "MileStone2016" variant of COLDSTEEL
references:
- https://www.ncsc.gov.uk/static-assets/documents/malware-analysis-reports/cold-steel/NCSC-MAR-Cold-Steel.pdf
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-04-30
tags:
- attack.persistence
- detection.emerging-threats
- attack.stealth
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|contains:
- '\Windows\System32\'
- '\AppData\'
User|contains: 'ANONYMOUS'
condition: selection
falsepositives:
- Unknown
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
ParentImage|contains:
- '\Windows\System32\'
- '\AppData\'
User|contains: 'ANONYMOUS'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
ParentImage | match |
| field:"ParentImage" kind:match |
User | match |
| field:"user" kind:match value:"ANONYMOUS" |