IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Halfbaked Command and Control Beacon
editHalfbaked Command and Control Beacon
editHalfbaked is a malware family used to establish persistence in a contested network. This rule detects a network activity algorithm leveraged by Halfbaked implant beacons for command and control.
Rule type: query
Rule indices:
- packetbeat-*
- auditbeat-*
- filebeat-*
- logs-network_traffic.*
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:
- Use Case: Threat Detection
- Tactic: Command and Control
- Domain: Endpoint
Version: 104
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guide
edit## Threat intel This activity has been observed in FIN7 campaigns.
Rule query
edit(event.dataset: (network_traffic.tls OR network_traffic.http) OR
(event.category: (network OR network_traffic) AND network.protocol: http)) AND
network.transport:tcp AND url.full:/http:\/\/[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}\/cd/ AND
destination.port:(53 OR 80 OR 8080 OR 443)
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/