Elastic Defend high stable eql
Registry Modification via WMI StdRegProv
Identifies registry modification using the Windows Management Instrumentation SrdRegProv provider. Adversaries may leverage WMI to modify system configuration via registry changes.
Detection Logic
api where
process.Ext.api.name == "IWbemServices::ExecMethod" and user.id != "S-1-5-18" and
process.Ext.api.parameters.operation : "*StdRegProv::SetStringValue*" and
process.executable != "C:\\Program Files (x86)\\GreenwayTR\\GMTGC.exe" and
not (process.code_signature.trusted == true and
process.code_signature.subject_name in ("Reason Cybersecurity Inc.", "Micro-Star International CO., LTD.", "Lansweeper NV", "LANSWEEPER NV", "YANDEX LLC", "Beijing Sogou Technology Development Co., Ltd.", "HP Inc.", "95895A1E-217A-4242-9200-7E698391758E", "Omnissa, LLC", "Beijing Kingsoft Security software Co.,Ltd")) and
not (process.executable == "C:\\Windows\\SysWOW64\\wscript.exe" and process.parent.executable == "C:\\Windows\\SysWOW64\\cmd.exe" and
process.command_line in ("WSCRIPT /B parseXML.vbs base_agentdata.xml agentdata.xml", "WSCRIPT /B ae_scan.vbs agentdata")) and
not (process.name : ("wscript.exe", "cscript.exe") and process.command_line : ("*\\\\*\\netlogon\\*", "\"C:\\Windows\\system32\\wscript.exe\" \"C:\\Program Files (x86)\\RoomSeeker\\DBChange.vbs\"")) and
not (process.executable == "C:\\Windows\\System32\\wscript.exe" and process.parent.executable == "C:\\Windows\\System32\\gpscript.exe") and
not (process.executable : "C:\\Windows\\System32\\svchost.exe" and process.parent.executable : "C:\\Windows\\System32\\services.exe") and
not process.executable : ("C:\\Windows\\System32\\cscript.exe",
"C:\\Windows\\SysWOW64\\cscript.exe",
"C:\\Windows\\System32\\msiexec.exe",
"C:\\Windows\\SysWOW64\\msiexec.exe",
"C:\\Program Files (x86)\\Sage\\*.exe") and
not process.parent.executable : ("C:\\Program Files (x86)\\PCMatic\\PCPitstopScheduleService.exe",
"C:\\Program Files (x86)\\Sage\\Sage 100\\9.0\\Shared\\OLStart.exe",
"E:\\BELOFF_2O2O.O3L\\wpi\\WPI.exe") Field Validations
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