User Added to Local Administrators Group

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About the rule

Rule Type

Standard

Rule Description

Detects addition of users to the local administrator group via "Net" or "Add-LocalGroupMember".

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND ((COMMANDLINE contains "localgroup " AND COMMANDLINE contains " /add") OR (COMMANDLINE contains "Add-LocalGroupMember " AND COMMANDLINE contains " -Group ")) AND COMMANDLINE contains " administrators , administrateur" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)