Notepad++ Installer created Registry Run Key Persistence
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About the rule
Rule Type
Standard
Rule Description
Detects a Notepad++ installer modifying Windows Run or RunOnce registry keys, which is not expected during normal updates and may indicate supply-chain compromise.
Severity
Critical
Rule Requirement
Criteria
Action1:
actionname = "Registry Event" AND (PROCESSNAME contains "\npp." AND PROCESSNAME contains "Installer" AND PROCESSNAME endswith ".exe" AND ACCESSES = "objectcreated,objectmodified,Setvalue" AND OBJECTNAME contains "Software\Microsoft\Windows\CurrentVersion" AND OBJECTNAME contains "Run,Runonce")
select Action1.HOSTNAME,Action1.MESSAGE,Action1.PROCESSNAME,Action1.OBJECTNAME,Action1.OBJECTVALUENAME,Action1.ACCESSES,Action1.USERNAME,Action1.DOMAIN,Action1.PREVVAL,Action1.CHANGES,Action1.INFORMATION
Detection
Execution Mode
realtime
Log Sources
Windows
