MediumSigmaHQ Austin Songer @austinsonger

Activity from Anonymous IP Addresses

Detects when a Microsoft Cloud App Security reported when users were active from an IP address that has been identified as an anonymous proxy IP address.

Detection logic

Detection requirements

Platform: ESXi Linux macOS Network Devices 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

User using a VPN or Proxy

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/defender-cloud-apps/anomaly-detection-policy	Product documentation	12
learn.microsoft.com/en-us/defender-cloud-apps/policy-template-reference	Product documentation	12

Detection rules

Activity from Anonymous IP Addresses

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules