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Possible FIN7 DGA Command and Control Behavioredit
This rule detects a known command and control pattern in network events. The FIN7 threat group is known to use this command and control technique, while maintaining persistence in their target’s network.
Rule type: query
Rule indices:
- auditbeat-*
- filebeat-*
- packetbeat-*
- logs-endpoint.events.*
Severity: high
Risk score: 73
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Elastic
- Network
- Threat Detection
- Command and Control
- Host
Version: 6
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guideedit
## Triage and analysis In the event this rule identifies benign domains in your environment, the `destination.domain` field in the rule can be modified to include those domains. Example: `...AND NOT destination.domain:(zoom.us OR benign.domain1 OR benign.domain2)`.
Rule queryedit
event.category:(network OR network_traffic) AND type:(tls OR http) AND network.transport:tcp
AND destination.domain:/[a-zA-Z]{4,5}\.(pw|us|club|info|site|top)/ AND NOT destination.domain:zoom.us
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Command and Control
- ID: TA0011
- Reference URL: https://attack.mitre.org/tactics/TA0011/
-
Technique:
- Name: Application Layer Protocol
- ID: T1071
- Reference URL: https://attack.mitre.org/techniques/T1071/
-
Technique:
- Name: Dynamic Resolution
- ID: T1568
- Reference URL: https://attack.mitre.org/techniques/T1568/
-
Sub-technique:
- Name: Domain Generation Algorithms
- ID: T1568.002
- Reference URL: https://attack.mitre.org/techniques/T1568/002/