New Agent Skills Installation Attempt Via Node.EXE
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About the rule
Rule Type
Standard
Rule Description
Detects the attempt to install new skills for AI agents using the npx skills command.
Severity
Attention
Rule Requirement
Criteria
Action1:
actionname = "Process started" AND ( PROCESSNAME endswith "\node.exe" OR ORIGINALFILENAME = "node.exe" ) AND ( COMMANDLINE contains "npx-cli.js" AND COMMANDLINE contains "skills " AND COMMANDLINE contains "add " )
select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME,Action1.DOMAIN,Action1.ORIGINALFILENAME,Action1.PARENTPROCESSID,Action1.PROCESSID,Action1.PRODUCT_NAME,Action1.SECURITYID
Detection
Execution Mode
continuous
Log Sources
Windows
Author
@Marco Pedrinazzi (@pedrinazziM) (InTheCyber)


