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IMPORTANT: No additional bug fixes or documentation updates will be released for this version.
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Elastic Docs ›SIEM Guide [7.8] ›Detections (beta) ›Prebuilt rule reference

Potential DNS Tunneling via Iodine

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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-*

Severity: high

Risk score: 73

Runs every: 5 minutes

Searches indices from: now-6m (Date Math format, see also Additional look-back time)

Maximum signals per execution: 100

References:

Tags:

  • Elastic
  • Linux

Version: 2 (version history)

Added (Elastic Stack release): 7.6.0

Last modified (Elastic Stack release): 7.7.0

Potential false positives

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Normal use of Iodine is uncommon apart from security testing and research. Use by non-security engineers is very uncommon.

Rule query

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process.name:(iodine or iodined) and event.action:executed

Rule version history

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Version 2 (7.7.0 release)

Updated query, changed from: 

process.name: (iodine or iodined) and event.action:executed
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