Jonhnathan
55 lines
1.8 KiB
TOML
55 lines
1.8 KiB
TOML
[metadata]
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creation_date = "2023/01/12"
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integration = ["endpoint", "windows"]
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maturity = "production"
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updated_date = "2023/12/21"
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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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[rule]
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author = ["Elastic"]
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description = """
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Detects attempts to execute a program on the host from the Windows Subsystem for Linux.
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Adversaries may enable and use WSL for Linux to avoid detection.
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"""
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from = "now-9m"
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index = ["winlogbeat-*", "logs-endpoint.events.*", "logs-windows.*", "endgame-*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Execution via Windows Subsystem for Linux"
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references = ["https://learn.microsoft.com/en-us/windows/wsl/wsl-config"]
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risk_score = 47
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rule_id = "db7dbad5-08d2-4d25-b9b1-d3a1e4a15efd"
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severity = "medium"
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tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Defense Evasion", "Data Source: Elastic Endgame", "Data Source: Elastic Defend"]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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process where host.os.type == "windows" and event.type : "start" and
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process.parent.name : ("wsl.exe", "wslhost.exe") and
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not process.executable : (
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"?:\\Program Files (x86)\\*",
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"?:\\Program Files\\*",
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"?:\\Program Files*\\WindowsApps\\MicrosoftCorporationII.WindowsSubsystemForLinux_*\\wsl*.exe",
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"?:\\Windows\\System32\\conhost.exe",
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"?:\\Windows\\System32\\lxss\\wslhost.exe",
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"?:\\Windows\\System32\\WerFault.exe",
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"?:\\Windows\\Sys*\\wslconfig.exe"
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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 = "T1202"
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name = "Indirect Command Execution"
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reference = "https://attack.mitre.org/techniques/T1202/"
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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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