CriticalSigmaHQ Florian Roth (Nextron Systems) +2

Mailbox Export to Exchange Webserver

Detects a successful export of an Exchange mailbox to untypical directory or with aspx name suffix which can be used to place a webshell or the needed role assignment for it

Detection logic

Detection requirements

Platform: Linux macOS Network Devices Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: windows
Log source service: msexchange_management

Known benign triggers

Unlikely

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
blog.orange.tw/2021/08/proxylogon-a-new-attack-surface-on-ms-exchange-part-1.html	Unclassified	4from 2 sources

Detection rules

Mailbox Export to Exchange Webserver

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules