Exchange Set OabVirtualDirectory ExternalUrl Property

Rule to detect an adversary setting OabVirtualDirectory External URL property to a script in Exchange Management log

Detection logic

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

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
twitter.com/OTR_Community/status/1371053369071132675	Social post	Only this detection cites it