Potential DNS Tunneling via Iodine
editPotential DNS Tunneling via Iodine
editIodine 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: 5 minutes
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: 100 (version history)
Added (Elastic Stack release): 7.6.0
Last modified (Elastic Stack release): 8.5.0
Rule authors: Elastic
Rule license: Elastic License v2
Potential false positives
editNormal use of Iodine is uncommon apart from security testing and research. Use by non-security engineers is very uncommon.
Rule query
editevent.category:process and event.type:(start or process_started) and process.name:(iodine or iodined)
Threat mapping
editFramework: MITRE ATT&CKTM
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Tactic:
- Name: Command and Control
- ID: TA0011
- Reference URL: https://attack.mitre.org/tactics/TA0011/
-
Technique:
- Name: Protocol Tunneling
- ID: T1572
- Reference URL: https://attack.mitre.org/techniques/T1572/
Rule version history
edit- Version 100 (8.5.0 release)
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- Formatting only
- Version 9 (8.4.0 release)
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- Formatting only
- Version 7 (7.12.0 release)
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- Formatting only
- Version 6 (7.11.2 release)
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- Formatting only
- Version 5 (7.10.0 release)
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- Formatting only
- Version 4 (7.9.1 release)
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- Formatting only
- Version 3 (7.9.0 release)
-
-
Updated query, changed from:
process.name:(iodine or iodined) and event.action:executed
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- Version 2 (7.7.0 release)
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-
Updated query, changed from:
process.name: (iodine or iodined) and event.action:executed
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