unknown folders reapearing after deletion, in all hard drives

I have 2 folders per each hard drive, with different names containing several types of files, .doc, .jpg, .xls Example: Folder Vuse256 contains this:
All files are inoperative.Karspersky finds nothing. Apparently the computer behaves normally.
Whats this?

AndreTen said:

Hi luciolibanio and welcome to Ten forums

Did you install any anti-ransomware program?

Hi. Thanks for your reply.
As a matter of fact, I did.
And didn't occur to me that those folders could have been generated by it.

AndreTen said:

Could be. Depends of which anti ransomware you installed. Files and folder are like honey pot for possible infection and are monitored by program. This relates to RansomFree by Cybereason.

Yes, that's the one I've installed.
Thanks again