PowerShell or non-browser mailbox login activity

Detects mailbox login from Exchange PowerShell. All accounts can use it by default, but admins can change it. Whitelist benign activities.

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 3 ATT&CK techniques it maps to.
Log source product: office365
Log source service: officeactivity_exchange

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Detection rules

PowerShell or non-browser mailbox login activity

Detection logic

Detection requirements

MITRE ATT&CK mappings

From the source

Licence

Authorship

Detection rules