Potential COLDSTEEL RAT Windows User Creation
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About the rule
Rule Type
Standard
Rule Description
Detects creation of a new user profile with a specific username, seen being used by some variants of the COLDSTEEL RAT.
Severity
Trouble
Rule Requirement
Criteria
Action1:
actionname = "Registry value modified" AND ((OBJECTNAME contains "\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\S-1-5-21-" AND OBJECTNAME contains "\ProfileImagePath") OR ((OBJECTNAME contains "\ProfileImagePath" OR OBJECTVALUENAME contains "\ProfileImagePath") OR (OBJECTNAME endswith "\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList" AND OBJECTVALUENAME startswith "S-1-5-21-"))) AND INFORMATION contains "ANONYMOUS,_DomainUser_"
select Action1.HOSTNAME,Action1.MESSAGE,Action1.OBJECTNAME,Action1.PROCESSNAME,Action1.PREVVAL,Action1.CHANGES,Action1.USERNAME,Action1.DOMAIN,Action1.NEWTYPE,Action1.OBJECTVALUENAME,Action1.OLDTYPE
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Nasreddine Bencherchali (Nextron Systems)
