Potential DNS Tunneling via Iodine

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Iodine is a tool for tunneling Internet protocol version 4 (IPV4) traffic over the DNS protocol to circumvent firewalls, network security groups, and network access lists while evading detection.

Rule type: query

Rule indices:

  • auditbeat-*
  • logs-endpoint.events.*

Severity: high

Risk score: 73

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Host
  • Linux
  • Threat Detection
  • Command and Control

Version: 101

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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event.category:process and event.type:(start or process_started) and process.name:(iodine or iodined)

Framework: MITRE ATT&CKTM