Potential DNS Tunneling via Iodine

Elastic Stack Serverless Security

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 (https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html#date-math[Date Math format], see also Additional look-back time)

Maximum alerts per execution: 100

References:

https://code.kryo.se/iodine/

Tags:

Elastic
Host
Linux
Threat Detection
Command and Control

Version: 101

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

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

	

Framework: MITRE ATT&CKTM

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/