In the background
com.apple.Virtualization.VirtualMachineLinux virtual machine
◐ Close the app instead
A Linux computer running inside your Mac.
What it is
Started by a developer tool such as Lima, Colima, Docker Desktop or OrbStack, using Apple’s virtualisation. It reserves memory while it runs.
If you close it
Everything running inside it stops at once. Stop it from the tool that started it instead.
The verdict
◐ Close the app instead. A part of an app. Closing it alone breaks something, so close its app.
In Activity Monitor
com.apple.Virtualization.VirtualMachine
From Procession’s guide, in the words the app shows.