Justin Ibarra
72 lines
2.0 KiB
TOML
72 lines
2.0 KiB
TOML
[metadata]
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creation_date = "2020/11/27"
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maturity = "production"
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updated_date = "2021/03/08"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies use of the built-in Windows script interpreters (cscript.exe or wscript.exe) being used to execute a process
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via Windows Management Instrumentation (WMI). This may be indicative of malicious activity.
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"""
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from = "now-9m"
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index = ["winlogbeat-*", "logs-endpoint.events.*", "logs-windows.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Windows Script Interpreter Executing Process via WMI"
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risk_score = 47
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rule_id = "b64b183e-1a76-422d-9179-7b389513e74d"
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severity = "medium"
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tags = ["Elastic", "Host", "Windows", "Threat Detection", "Initial Access"]
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type = "eql"
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query = '''
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sequence by host.id with maxspan = 5s
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[library where dll.name : "wmiutils.dll" and process.name : ("wscript.exe", "cscript.exe")]
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[process where event.type in ("start", "process_started") and
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process.parent.name : "wmiprvse.exe" and
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user.domain != "NT AUTHORITY" and
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(process.pe.original_file_name :
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(
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"cscript.exe",
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"wscript.exe",
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"PowerShell.EXE",
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"Cmd.Exe",
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"MSHTA.EXE",
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"RUNDLL32.EXE",
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"REGSVR32.EXE",
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"MSBuild.exe",
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"InstallUtil.exe",
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"RegAsm.exe",
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"RegSvcs.exe",
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"msxsl.exe",
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"CONTROL.EXE",
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"EXPLORER.EXE",
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"Microsoft.Workflow.Compiler.exe",
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"msiexec.exe"
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) or
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process.executable : ("C:\\Users\\*.exe", "C:\\ProgramData\\*.exe")
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)
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]
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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 = "T1566"
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name = "Phishing"
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reference = "https://attack.mitre.org/techniques/T1566/"
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[[rule.threat.technique.subtechnique]]
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id = "T1566.001"
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name = "Spearphishing Attachment"
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reference = "https://attack.mitre.org/techniques/T1566/001/"
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[rule.threat.tactic]
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id = "TA0001"
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name = "Initial Access"
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reference = "https://attack.mitre.org/tactics/TA0001/"
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