Difficult File Removal/delete.

This PC has picked up several files like this: HxA-Yahoo-Darkscale-100png. I have only been able to find them using one application, Search Everything. I have no means of deleting them and they are not going without resistance. Thank you for any help that works., jim

 

First: File Deletion Tool, Malware Bytes, Glary Utilities 5, Search Everywhere Windows 10 files.
No sir. No Yahoo installed except what has ridden in here on a Trojan horse.

 

2 things: 1) It's not Search everywhere. It is Search Everything.
2.

 

This is what the screen looks like.

 

Yes, upon closer examination, there is a period.

 

There are several now several different file names and numbers. I have dumped my favorite browser and any related programs to Firefox. No change in anything except if I am not mistaken, the files are increasing in number. Perhaps you can see why I want to remove the cause.

 

Favorite browser; meant to say, Water Fox.