Detection rules › Sigma
Potential COLDSTEEL RAT Windows User Creation
Detects creation of a new user profile with a specific username, seen being used by some variants of the COLDSTEEL RAT.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | No specific technique |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 13: RegistryEvent (Value Set) |
Rule body
title: Potential COLDSTEEL RAT Windows User Creation
id: 95214813-4c7a-4a50-921b-ee5c538e1d16
status: test
description: Detects creation of a new user profile with a specific username, seen being used by some variants of the COLDSTEEL RAT.
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: 2023-05-02
modified: 2023-08-17
tags:
- attack.persistence
- detection.emerging-threats
logsource:
category: registry_set
product: windows
detection:
selection:
TargetObject|contains|all:
- '\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\S-1-5-21-'
- '\ProfileImagePath'
Details|contains:
- 'ANONYMOUS'
- '_DomainUser_'
condition: selection
falsepositives:
- Unknown
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
TargetObject|contains|all:
- '\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\S-1-5-21-'
- '\ProfileImagePath'
Details|contains:
- 'ANONYMOUS'
- '_DomainUser_'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
Details | match |
| field:"Details" kind:match |
TargetObject | match |
| field:"TargetObject" kind:match |