Justin Ibarra
67 lines
2.2 KiB
TOML
67 lines
2.2 KiB
TOML
[metadata]
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creation_date = "2020/02/18"
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ecs_version = ["1.6.0"]
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maturity = "production"
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updated_date = "2020/11/03"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies network activity from unexpected system applications. This may indicate adversarial activity as these
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applications are often leveraged by adversaries to execute code and evade detection.
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"""
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from = "now-9m"
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index = ["winlogbeat-*", "logs-endpoint.events.*"]
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language = "eql"
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license = "Elastic License"
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name = "Unusual Process Network Connection"
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risk_score = 21
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rule_id = "610949a1-312f-4e04-bb55-3a79b8c95267"
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severity = "low"
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tags = ["Elastic", "Host", "Windows", "Threat Detection", "Execution"]
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type = "eql"
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query = '''
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sequence by process.entity_id
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[process where (process.name : "Microsoft.Workflow.Compiler.exe" or
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process.name : "bginfo.exe" or
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process.name : "cdb.exe" or
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process.name : "cmstp.exe" or
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process.name : "csi.exe" or
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process.name : "dnx.exe" or
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process.name : "fsi.exe" or
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process.name : "ieexec.exe" or
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process.name : "iexpress.exe" or
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process.name : "odbcconf.exe" or
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process.name : "rcsi.exe" or
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process.name : "xwizard.exe") and
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event.type == "start"]
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[network where (process.name : "Microsoft.Workflow.Compiler.exe" or
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process.name : "bginfo.exe" or
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process.name : "cdb.exe" or
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process.name : "cmstp.exe" or
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process.name : "csi.exe" or
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process.name : "dnx.exe" or
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process.name : "fsi.exe" or
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process.name : "ieexec.exe" or
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process.name : "iexpress.exe" or
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process.name : "odbcconf.exe" or
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process.name : "rcsi.exe" or
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process.name : "xwizard.exe")]
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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 = "T1127"
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name = "Trusted Developer Utilities Proxy Execution"
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reference = "https://attack.mitre.org/techniques/T1127/"
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[rule.threat.tactic]
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id = "TA0002"
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name = "Execution"
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reference = "https://attack.mitre.org/tactics/TA0002/"
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