SharePointFileOperation via devices with previously unseen user agents

Tracking via user agent is one way to differentiate between types of connecting device. In homogeneous enterprise environments the user agent associated with an attacker device may stand out as unusual.

Detection logic

Detection requirements

Platform: ESXi Linux macOS Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: azureactivedirectory office365
Log source service: officeactivity_sharepoint signinlogs

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Detection rules

SharePointFileOperation via devices with previously unseen user agents

Detection logic

Detection requirements

MITRE ATT&CK mappings

From the source

Licence

Authorship

Detection rules