Startup Folder File Write

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About the rule

Rule Type

Standard

Rule Description

A General detection for files being created in the Windows startup directory. This could be an indicator of persistence.

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "File Created or Modified" AND (FILENAME contains "\Microsoft\Windows\Start Menu\Programs\StartUp" OR OBJECTNAME contains "\Microsoft\Windows\Start Menu\Programs\StartUp") AND (PROCESSNAME != "C:\Windows\System32\wuauclt.exe" AND (FILENAME notstartswith "C:\$WINDOWS.~BT\NewOS" AND OBJECTNAME notstartswith "C:\$WINDOWS.~BT\NewOS")) select Action1.HOSTNAME,Action1.MESSAGE,Action1.USERNAME,Action1.DOMAIN,Action1.OBJECTNAME,Action1.FILENAME,Action1.PROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)