sigma-rules/rules/linux/command_and_control_linux_iodine_activity.toml

[metadata]
creation_date = "2020/02/18"
integration = ["endpoint"]
maturity = "production"
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
min_stack_version = "8.3.0"
updated_date = "2023/02/22"

[rule]
author = ["Elastic"]
description = """
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.
"""
false_positives = [
    """
    Normal use of Iodine is uncommon apart from security testing and research. Use by non-security engineers is very
    uncommon.
    """,
]
from = "now-9m"
index = ["auditbeat-*", "logs-endpoint.events.*", "endgame-*"]
language = "kuery"
license = "Elastic License v2"
name = "Potential DNS Tunneling via Iodine"
references = ["https://code.kryo.se/iodine/"]
risk_score = 73
rule_id = "041d4d41-9589-43e2-ba13-5680af75ebc2"
severity = "high"
tags = ["Elastic", "Host", "Linux", "Threat Detection", "Command and Control", "Elastic Endgame"]
timestamp_override = "event.ingested"
type = "query"

query = '''
event.category:process and host.os.type:linux and event.type:(start or process_started) and process.name:(iodine or iodined)
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1572"
name = "Protocol Tunneling"
reference = "https://attack.mitre.org/techniques/T1572/"


[rule.threat.tactic]
id = "TA0011"
name = "Command and Control"
reference = "https://attack.mitre.org/tactics/TA0011/"