Ruben Groenewoud
b291317ea6
* [New Rule] Network Activity via cat * Update command_and_control_cat_network_activity.toml --------- Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
58 lines
1.9 KiB
TOML
58 lines
1.9 KiB
TOML
[metadata]
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creation_date = "2023/09/04"
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integration = ["endpoint"]
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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 = "2023/09/04"
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[rule]
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author = ["Elastic"]
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description = """
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This rule monitors for the execution of the cat command, followed by a connection attempt by the same process. Cat
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is capable of transfering data via tcp/udp channels by redirecting its read output to a /dev/tcp or /dev/udp channel.
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This activity is highly suspicious, and should be investigated. Attackers may leverage this capability to transfer tools
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or files to another host in the network or exfiltrate data while attempting to evade detection in the process.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Network Activity Detected via cat"
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risk_score = 47
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rule_id = "afd04601-12fc-4149-9b78-9c3f8fe45d39"
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severity = "medium"
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tags = ["Domain: Endpoint", "OS: Linux", "Use Case: Threat Detection", "Tactic: Command and Control", "Data Source: Elastic Defend"]
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type = "eql"
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query = '''
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sequence by host.id, process.entity_id with maxspan=1s
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[process where host.os.type == "linux" and event.action == "exec" and event.type == "start" and
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process.name == "cat"]
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[network where host.os.type == "linux" and event.action in ("connection_attempted", "disconnect_received") and
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process.name == "cat"]
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'''
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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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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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[rule.threat.tactic]
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id = "TA0005"
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name = "Defense Evasion"
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reference = "https://attack.mitre.org/tactics/TA0005/"
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[rule.threat.tactic]
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id = "TA0010"
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name = "Exfiltration"
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reference = "https://attack.mitre.org/tactics/TA0010/"
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