Defender for Endpoint - WSL Host and Version
MDE WSL
Query
DeviceInfo
| where OSPlatform == 'Linux' and isempty(HostDeviceId) != true
| summarize arg_max(TimeGenerated,*) by DeviceId
| project TimeGenerated, DeviceName, OSPlatform, DeviceId, HostDeviceId
| join (DeviceInfo
| where OSPlatform contains "Windows"
| summarize arg_max(TimeGenerated,*) by DeviceId
| extend HostOSPlatform = OSPlatform
| extend HostDeviceName = DeviceName
| extend HostDeviceId = DeviceId)
on $left. HostDeviceId == $right. HostDeviceId
| project TimeGenerated, DeviceName, OSPlatform, DeviceId, HostDeviceId, HostDeviceName, HostOSPlatform
| join (DeviceProcessEvents
| where InitiatingProcessFileName == 'wsl.exe'
| summarize arg_max(TimeGenerated,*) by DeviceId
| project InitiatingProcessVersionInfoProductVersion, InitiatingProcessVersionInfoFileDescription, InitiatingProcessFileName, DeviceId)
on $left.HostDeviceId == $right.DeviceIdAbout this query
Defender for Endpoint - WSL Host and Version
Query Information
Description
Use the below query to identify the Windows Host and the WSL version of a Defender for endpoint enabled WSL system.
References
Microsoft 365 Defender
Explanation
This query helps to find the Windows Host and WSL version of a system with Defender for Endpoint enabled. It looks at the device information, including the OS platform, device name, and device ID. It then joins this information with process events to identify the WSL version running on the system.
Details

Alex Verboon
Released: June 25, 2024
Tables
DeviceInfoDeviceProcessEvents
Keywords
DeviceInfoOSPlatformHostDeviceIdDeviceIdTimeGeneratedDeviceNameHostOSPlatformHostDeviceNameDeviceProcessEventsInitiatingProcessFileNameInitiatingProcessVersionInfoProductVersionInitiatingProcessVersionInfoFileDescription.
Operators
whereisemptysummarizearg_maxbyprojectjoinextendcontainsonInitiatingProcessFileNameDeviceProcessEventswsl.exeDeviceIdTimeGeneratedDeviceNameOSPlatformHostDeviceIdHostOSPlatformHostDeviceNameInitiatingProcessVersionInfoProductVersionInitiatingProcessVersionInfoFileDescription.