New or Renamed User Account with '$' Character
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About the rule
Rule Type
Standard
Rule Description
Detects the creation of a user with the "$" character. This can be used by attackers to hide a user or trick detection systems that lack the parsing mechanisms.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "User Created or Account Name Modified" AND (SAMACCOUNTNAME contains "$" OR TARGETUSER contains "$") AND CHANGES != "HomeGroupUser$" select Action1.HOSTNAME,Action1.MESSAGE,Action1.USERNAME,Action1.DOMAIN,Action1.TARGETUSER,Action1.TARGETDOMAIN,Action1.CHANGES,Action1.PREVVAL
Detection
Execution Mode
realtime
Log Sources
Active Directory
Author
Ilyas Ochkov, oscd.community
