Emerging Threathightest
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
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Launch
Emerging Threat
Active Threat
Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.
Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic1 selector
detection:
selection:
ParentImage|contains:
- '\Windows\System32\'
- '\AppData\'
User|contains: 'ANONYMOUS'
condition: selectionFalse Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
References
MITRE ATT&CK
Other
detection.emerging-threats
Rule Metadata
Rule ID
e01b6eb5-1eb4-4465-a165-85d40d874add
Status
test
Level
high
Type
Emerging Threat
Created
Sun Apr 30
Path
rules-emerging-threats/2023/Malware/COLDSTEEL/proc_creation_win_malware_coldsteel_anonymous_process.yml
Raw Tags
attack.persistenceattack.defense-evasiondetection.emerging-threats