Uncommon Port for Organization

Identifies abnormal ports used in the organization based on learning period activity. This can indicate exfiltration attack or C2 control from machines in the organization by using new a port that has never been used.

Detection logic

Detection requirements

Platform: ESXi IaaS Linux macOS Network Devices Office Suite SaaS Windows
The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.
Log source product: azurefirewall
Log source service: azfwapplicationrule azfwnetworkrule azurediagnostics

Detection rules

Uncommon Port for Organization

Detection logic

Detection requirements

MITRE ATT&CK mappings

From the source

Licence

Authorship

Detection rules