Elastic low stable eql
Disable Windows Event and Security Logs Using Built-in Tools
Identifies attempts to disable EventLog via the logman Windows utility, PowerShell, or auditpol. This is often done by attackers in an attempt to evade detection on a system.
Detection Logic
process where host.os.type == "windows" and event.type == "start" and
(
(
(process.name:"logman.exe" or ?process.pe.original_file_name == "Logman.exe") and
process.args : "EventLog-*" and process.args : ("stop", "delete")
) or
(
(
process.name : ("pwsh.exe", "powershell.exe", "powershell_ise.exe") or
?process.pe.original_file_name in ("PowerShell.EXE", "pwsh.dll", "powershell_ise.EXE")
) and
process.args : "Set-Service" and process.args: "EventLog" and process.args : "Disabled"
) or
(
(process.name:"auditpol.exe" or ?process.pe.original_file_name == "AUDITPOL.EXE") and process.args : "/success:disable"
)
) Field Validations
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