MediumSigmaHQ Sorina Ionescu

PST Export Alert Using eDiscovery Alert

Alert on when a user has performed an eDiscovery search or exported a PST file from the search. This PST file usually has sensitive information including email body content

Detection logic

Detection requirements

Platform: Linux macOS Office Suite Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: m365
Log source service: threat_management

Known benign triggers

PST export can be done for legitimate purposes but due to the sensitive nature of its content it must be monitored.

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
learn.microsoft.com/en-us/microsoft-365/compliance/alert-policies?view=o365-worldwide	Product documentation	Only this detection cites it

Detection rules

PST Export Alert Using eDiscovery Alert

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules