Mail reply to new domain

This query helps reviewing mail that is likely a reply but there is no history of the people chatting and the domain is new

Detection logic

Detection requirements

Platform: Identity Provider Linux macOS Office Suite SaaS Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: microsoftthreatprotection
Log source service: emailevents

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Detection rules

Mail reply to new domain

Detection logic

Detection requirements

MITRE ATT&CK mappings

From the source

Licence

Authorship

Detection rules