Failed file access attempts

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About the rule

Rule Type

Standard

Rule Description

Multiple failed attempts to access a single file are made by the same user.

Severity

Critical

Rule Requirement

Criteria

Action1: actionname = "Failed file access" | timewindow 5m | groupby USERNAME | groupby OBJECTNAME having COUNT > 5 select Action1.timewindow.HOSTNAME,Action1.timewindow.MESSAGE,Action1.timewindow.USERNAME,Action1.timewindow.DOMAIN,Action1.timewindow.OBJECTNAME,Action1.timewindow.PROCESSNAME,Action1.timewindow.ACCESSLIST

Detection

Execution Mode

realtime

Log Sources

Windows