Elastic low stable eql
Windows Defender Disabled via Registry Modification
Identifies modifications to the Windows Defender registry settings to disable the service or set the service to be started manually.
Detection Logic
registry where host.os.type == "windows" and event.type == "change" and
(
(
registry.path: (
"HKLM\\SOFTWARE\\Policies\\Microsoft\\Windows Defender\\DisableAntiSpyware",
"\\REGISTRY\\MACHINE\\SOFTWARE\\Policies\\Microsoft\\Windows Defender\\DisableAntiSpyware"
) and
registry.data.strings: ("1", "0x00000001")
) or
(
registry.path: (
"HKLM\\System\\*ControlSet*\\Services\\WinDefend\\Start",
"\\REGISTRY\\MACHINE\\System\\*ControlSet*\\Services\\WinDefend\\Start"
) and
registry.data.strings in ("3", "4", "0x00000003", "0x00000004")
)
) and
not
(
process.executable : (
"?:\\WINDOWS\\system32\\services.exe",
"?:\\Windows\\System32\\svchost.exe",
"?:\\Program Files (x86)\\Trend Micro\\Security Agent\\NTRmv.exe"
) and user.id : "S-1-5-18"
) Field Validations
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