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UnknownMicrosoft Sentinel analytics

Top domains outbound sending Malicious Teams messages inbound

This query looking for potential partner compromise via comparing outbound Teams message traffic per target domain and looking for malicious Teams messages from the same domains as inbound.

Detection logic

Detection requirements

Platform
Identity ProviderLinuxmacOSOffice SuiteSaaSWindows

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Log source product
microsoftthreatprotection
Log source service
messageevents

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