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New user created and added to the built-in administrators group

Identifies when a user account was created and then added to the builtin Administrators group in the same day. This should be monitored closely and all additions reviewed.

Detection logic

Detection requirements

Platform: Containers ESXi IaaS Identity Provider Linux macOS Network Devices Office Suite SaaS Windows
The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.
Log source product: securityevents windowsforwardedevents windowssecurityevents
Log source service: securityevent securityevents windowsevent

Detection rules

New user created and added to the built-in administrators group

Detection logic

Detection requirements

MITRE ATT&CK mappings

From the source

Licence

Authorship

Detection rules