Terrance DeJesus
518d146cb0
* adjusted query to filter out Elastic or Trend Micro EXE activity * added wildcard to drive letter and fixed unit test failure
52 lines
1.6 KiB
TOML
52 lines
1.6 KiB
TOML
[metadata]
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creation_date = "2020/10/27"
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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 = "2022/10/05"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies process execution followed by a file overwrite of an executable by the same parent process. This may indicate
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an evasion attempt to execute malicious code in a stealthy way.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.*", "winlogbeat-*", "logs-windows.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Potential Process Herpaderping Attempt"
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references = ["https://github.com/jxy-s/herpaderping"]
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risk_score = 73
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rule_id = "ccc55af4-9882-4c67-87b4-449a7ae8079c"
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severity = "high"
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tags = ["Elastic", "Host", "Windows", "Threat Detection", "Defense Evasion"]
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type = "eql"
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query = '''
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sequence with maxspan=5s
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[process where event.type == "start" and not process.parent.executable :
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(
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"?:\\Windows\\SoftwareDistribution\\*.exe",
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"?:\\Program Files\\Elastic\\Agent\\data\\*.exe",
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"?:\\Program Files (x86)\\Trend Micro\\*.exe"
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)
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] by host.id, process.executable, process.parent.entity_id
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[file where event.type == "change" and event.action == "overwrite" and file.extension == "exe"] by host.id, file.path, process.entity_id
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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 = "T1036"
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name = "Masquerading"
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reference = "https://attack.mitre.org/techniques/T1036/"
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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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