After upgrading VMware workstation, I noticed when making backups of my VMs that they contained lots of files in the guestappscache subdirectory that have names containing GUIDs.
I’m always wary for sudden seemingly random files being created.
It might be just some kind of virus slipping through the gates targeting a specific vulnerability.
The files appear to be for Unity, and it is easy to disable Unity. (I don’t use Unity: I use VMs to separate work and keep the clutter away from my host machine’s desktop <g>).