Ruben Groenewoud
65 lines
2.2 KiB
TOML
65 lines
2.2 KiB
TOML
[metadata]
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creation_date = "2023/08/28"
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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 = "2023/08/28"
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[rule]
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author = ["Elastic"]
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description = """
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This rule monitors a sequence involving a program compilation event followed by its execution and a subsequent network
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connection event. This behavior can indicate the set up of a reverse tcp connection to a command-and-control server.
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Attackers may spawn reverse shells to establish persistence onto a target system.
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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 Connection via Recently Compiled Executable"
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risk_score = 47
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rule_id = "64cfca9e-0f6f-4048-8251-9ec56a055e9e"
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severity = "medium"
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tags = ["Domain: Endpoint", "OS: Linux", "Use Case: Threat Detection", "Tactic: Execution", "Data Source: Elastic Defend"]
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type = "eql"
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query = '''
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sequence by host.id with maxspan=1m
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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 in ("gcc", "g++", "cc")] by process.args
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[file where host.os.type == "linux" and event.action == "creation" and process.name == "ld"] by file.name
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[process where host.os.type == "linux" and event.action == "exec" and event.type == "start"] by process.name
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[network where host.os.type == "linux" and event.action == "connection_attempted"] by process.name
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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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name = "Execution"
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id = "TA0002"
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reference = "https://attack.mitre.org/tactics/TA0002/"
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[[rule.threat.technique]]
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id = "T1059"
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name = "Command and Scripting Interpreter"
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reference = "https://attack.mitre.org/techniques/T1059/"
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[[rule.threat.technique.subtechnique]]
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id = "T1059.004"
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name = "Unix Shell"
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reference = "https://attack.mitre.org/techniques/T1059/004/"
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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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name = "Command and Control"
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id = "TA0011"
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reference = "https://attack.mitre.org/tactics/TA0011/"
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[[rule.threat.technique]]
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name = "Application Layer Protocol"
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id = "T1071"
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reference = "https://attack.mitre.org/techniques/T1071/"
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