[metadata]
creation_date = "2020/11/27"
integration = ["endpoint", "windows"]
maturity = "production"
updated_date = "2024/10/15"
min_stack_version = "8.14.0"
min_stack_comments = "Breaking change at 8.14.0 for the Windows Integration."

[rule]
author = ["Elastic"]
description = """
Identifies use of the built-in Windows script interpreters (cscript.exe or wscript.exe) being used to execute a process
via Windows Management Instrumentation (WMI). This may be indicative of malicious activity.
"""
from = "now-9m"
index = [
    "winlogbeat-*",
    "logs-endpoint.events.process-*",
    "logs-endpoint.events.library-*",
    "logs-windows.sysmon_operational-*",
    "endgame-*",
]
language = "eql"
license = "Elastic License v2"
name = "Windows Script Interpreter Executing Process via WMI"
risk_score = 47
rule_id = "b64b183e-1a76-422d-9179-7b389513e74d"
severity = "medium"
tags = [
    "Domain: Endpoint",
    "OS: Windows",
    "Use Case: Threat Detection",
    "Tactic: Initial Access",
    "Tactic: Execution",
    "Data Source: Elastic Endgame",
    "Data Source: Elastic Defend",
    "Data Source: Sysmon",
]
type = "eql"

query = '''
sequence by host.id with maxspan = 5s
    [any where host.os.type == "windows" and 
     (event.category : ("library", "driver") or (event.category == "process" and event.action : "Image loaded*")) and
     (?dll.name : "wmiutils.dll" or file.name : "wmiutils.dll") and process.name : ("wscript.exe", "cscript.exe")]
    [process where host.os.type == "windows" and event.type == "start" and
     process.parent.name : "wmiprvse.exe" and
     user.domain != "NT AUTHORITY" and
     (process.pe.original_file_name :
        (
          "cscript.exe",
          "wscript.exe",
          "PowerShell.EXE",
          "Cmd.Exe",
          "MSHTA.EXE",
          "RUNDLL32.EXE",
          "REGSVR32.EXE",
          "MSBuild.exe",
          "InstallUtil.exe",
          "RegAsm.exe",
          "RegSvcs.exe",
          "msxsl.exe",
          "CONTROL.EXE",
          "EXPLORER.EXE",
          "Microsoft.Workflow.Compiler.exe",
          "msiexec.exe"
        ) or
      process.executable : ("C:\\Users\\*.exe", "C:\\ProgramData\\*.exe")
     )
    ]
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1566"
name = "Phishing"
reference = "https://attack.mitre.org/techniques/T1566/"
[[rule.threat.technique.subtechnique]]
id = "T1566.001"
name = "Spearphishing Attachment"
reference = "https://attack.mitre.org/techniques/T1566/001/"



[rule.threat.tactic]
id = "TA0001"
name = "Initial Access"
reference = "https://attack.mitre.org/tactics/TA0001/"
[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1047"
name = "Windows Management Instrumentation"
reference = "https://attack.mitre.org/techniques/T1047/"

[[rule.threat.technique]]
id = "T1059"
name = "Command and Scripting Interpreter"
reference = "https://attack.mitre.org/techniques/T1059/"
[[rule.threat.technique.subtechnique]]
id = "T1059.005"
name = "Visual Basic"
reference = "https://attack.mitre.org/techniques/T1059/005/"



[rule.threat.tactic]
id = "TA0002"
name = "Execution"
reference = "https://attack.mitre.org/tactics/TA0002/"