Jonhnathan
85 lines
2.3 KiB
TOML
85 lines
2.3 KiB
TOML
[metadata]
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creation_date = "2024/03/26"
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integration = ["endpoint", "windows"]
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maturity = "production"
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updated_date = "2024/08/07"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies suspicious processes being spawned by the ScreenConnect server process (ScreenConnect.Service.exe). This
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activity may indicate exploitation activity or access to an existing web shell backdoor.
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"""
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from = "now-9m"
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index = [
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"logs-endpoint.events.process-*",
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"winlogbeat-*",
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"logs-windows.sysmon_operational-*",
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"logs-system.security*",
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"endgame-*",
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]
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language = "eql"
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license = "Elastic License v2"
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name = "ScreenConnect Server Spawning Suspicious Processes"
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references = ["https://blackpointcyber.com/resources/blog/breaking-through-the-screen/"]
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risk_score = 73
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rule_id = "3d00feab-e203-4acc-a463-c3e15b7e9a73"
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severity = "high"
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tags = [
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"Domain: Endpoint",
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"OS: Windows",
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"Use Case: Threat Detection",
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"Tactic: Initial Access",
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"Tactic: Execution",
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"Data Source: Elastic Endgame",
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"Data Source: Elastic Defend",
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"Data Source: Sysmon",
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"Data Source: System",
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]
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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 : "ScreenConnect.Service.exe" and
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(process.name : ("cmd.exe", "powershell.exe", "pwsh.exe", "powershell_ise.exe", "csc.exe") or
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?process.pe.original_file_name in ("cmd.exe", "powershell.exe", "pwsh.dll", "powershell_ise.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 = "T1190"
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name = "Exploit Public-Facing Application"
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reference = "https://attack.mitre.org/techniques/T1190/"
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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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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1059"
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name = "Command and Scripting Interpreter"
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reference = "https://attack.mitre.org/techniques/T1059/"
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[[rule.threat.technique.subtechnique]]
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id = "T1059.001"
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name = "PowerShell"
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reference = "https://attack.mitre.org/techniques/T1059/001/"
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[[rule.threat.technique.subtechnique]]
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id = "T1059.003"
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name = "Windows Command Shell"
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reference = "https://attack.mitre.org/techniques/T1059/003/"
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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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