Multiple file permission changes
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About the rule
Rule Type
Standard
Rule Description
Multiple file permissions are changed by the same user within a short timeframe.
Severity
Critical
Rule Requirement
Criteria
Action1: actionname = "File permission modified" | timewindow 3m | groupby HOSTNAME | groupby USERNAME having COUNT > 5 select Action1.timewindow.HOSTNAME,Action1.timewindow.MESSAGE,Action1.timewindow.USERNAME,Action1.timewindow.DOMAIN,Action1.timewindow.OBJECTNAME,Action1.timewindow.PROCESSNAME,Action1.timewindow.CHANGES,Action1.timewindow.PREVVAL
Detection
Execution Mode
realtime
Log Sources
Windows
