Hidden Local Account Detection

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About the rule

Rule Type

Standard

Rule Description

Detects the creation of a hidden local user account by appending the dollar sign to the account name. This may be done by the attackers to increase access to a system and avoid appearing in the results of accounts listing using the net users command.

Severity

Critical

Rule Requirement

Criteria

Action1: actionname = "User account created" AND (TARGETUSER endswith "$") select Action1.HOSTNAME,Action1.MESSAGE,Action1.TARGETUSER,Action1.TARGETDOMAIN,Action1.USERNAME,Action1.DOMAIN

Detection

Execution Mode

realtime

Log Sources

Windows