High reverse DNS count by host

Clients with a high reverse DNS count could be carrying out reconnaissance or discovery activity.

Detection logic

Detection requirements

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

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Detection rules

High reverse DNS count by host

Detection logic

Detection requirements

MITRE ATT&CK mappings

From the source

Licence

Authorship

Detection rules