Terrance DeJesus
2b22d066fd
* add beats compatability to NPC rules
* added filebeat compatibility to 'Accepted Default Telnet Port Connection'
* added filebeat compatibility to 'Cobalt Strike Command and Control Beacon'
* added filebeat compatibility to 'Default Cobalt Strike Team Server Certificate'
* added filebeat compatibility to 'Roshal Archive (RAR) or PowerShell File Downloaded from the Internet'
* added filebeat compatibility to 'Possible FIN7 DGA Command and Control Behavior'
* added filebeat compatibility to 'Halfbaked Command and Control Beacon'
* added filebeat compatibility to 'IPSEC NAT Traversal Port Activity'
* added filebeat compatibility to 'SMTP on Port 26/TCP'
* added filebeat compatibility to 'RDP (Remote Desktop Protocol) from the Internet'
* added filebeat compatibility to 'VNC (Virtual Network Computing) from the Internet'
* added filebeat compatibility to 'VNC (Virtual Network Computing) to the Internet'
* added filebeat compatibility to 'RPC (Remote Procedure Call) from the Internet'
* added filebeat compatibility to 'RPC (Remote Procedure Call) to the Internet'
* added filebeat compatibility to 'SMB (Windows File Sharing) Activity to the Internet'
* removed extra space in query
* added filebeat compatibility to 'Inbound Connection to an Unsecure Elasticsearch Node'
* added filebeat compatibility to 'Abnormally Large DNS Response'
* fixed missing ending parenthesis
* added auditbeat to compatible rules
* addressed feedback
* removed filebeat and auditbeat due to incompatibility
* Update rules/network/command_and_control_cobalt_strike_beacon.toml
* Update rules/network/command_and_control_accepted_default_telnet_port_connection.toml
Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>
---------
Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>
(cherry picked from commit b8ae2218f8)
72 lines
2.2 KiB
TOML
72 lines
2.2 KiB
TOML
[metadata]
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creation_date = "2020/07/06"
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integration = ["network_traffic"]
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maturity = "production"
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min_stack_comments = "New fields added: required_fields, related_integrations, setup"
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min_stack_version = "8.3.0"
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updated_date = "2023/08/01"
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[rule]
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author = ["Elastic"]
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description = """
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Cobalt Strike is a threat emulation platform commonly modified and used by adversaries to conduct network attack and
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exploitation campaigns. This rule detects a network activity algorithm leveraged by Cobalt Strike implant beacons for
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command and control.
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"""
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false_positives = [
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"""
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This rule should be tailored to either exclude systems, as sources or destinations, in which this behavior is
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expected.
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""",
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]
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from = "now-9m"
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index = ["packetbeat-*", "auditbeat-*", "filebeat-*", "logs-network_traffic.*"]
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language = "lucene"
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license = "Elastic License v2"
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name = "Cobalt Strike Command and Control Beacon"
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note = """## Threat intel
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This activity has been observed in FIN7 campaigns."""
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references = [
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"https://blog.morphisec.com/fin7-attacks-restaurant-industry",
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"https://www.fireeye.com/blog/threat-research/2017/04/fin7-phishing-lnk.html",
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"https://www.elastic.co/security-labs/collecting-cobalt-strike-beacons-with-the-elastic-stack",
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]
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risk_score = 73
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rule_id = "cf53f532-9cc9-445a-9ae7-fced307ec53c"
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severity = "high"
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tags = ["Use Case: Threat Detection", "Tactic: Command and Control", "Domain: Endpoint"]
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timestamp_override = "event.ingested"
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type = "query"
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query = '''
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((event.category: (network or network_traffic) and type: (tls or http))
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or event.dataset: (network_traffic.tls or network_traffic.http)
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) and destination.domain:/[a-z]{3}.stage.[0-9]{8}\..*/
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'''
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1071"
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name = "Application Layer Protocol"
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reference = "https://attack.mitre.org/techniques/T1071/"
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[[rule.threat.technique]]
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id = "T1568"
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name = "Dynamic Resolution"
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reference = "https://attack.mitre.org/techniques/T1568/"
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[[rule.threat.technique.subtechnique]]
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id = "T1568.002"
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name = "Domain Generation Algorithms"
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reference = "https://attack.mitre.org/techniques/T1568/002/"
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[rule.threat.tactic]
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id = "TA0011"
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name = "Command and Control"
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reference = "https://attack.mitre.org/tactics/TA0011/"
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