The SIEM app is now a part of the Elastic Security solution.
Click
here to view SIEM documentation for previous releases.
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
- Linux
Version: 4 (version history)
Added (Elastic Stack release): 7.6.0
Last modified (Elastic Stack release): 7.9.1
Rule authors: Elastic
Rule license: Elastic License
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)
Rule version history
edit- Version 4 (7.9.1 release)
-
- Formatting only
- Version 3 (7.9.0 release)
-
-
Updated query, changed from:
process.name:(iodine or iodined) and event.action:executed
-
- Version 2 (7.7.0 release)
-
-
Updated query, changed from:
process.name: (iodine or iodined) and event.action:executed
-