|As a general rule you can delete just about anything in the TEMP folder, and CCleaner should do this as part of its cleaning process. At a guess I would say that the .exe files that you have there are being produced by another piece of malware on your system that is hiding itself behind these random filenames, again a Google search for them brings up nothing so they are definitely suspicious. You may still get error messages if there is something in your startup that is trying to find the (now deleted) files.|
I've never use Quickheal so I can't comment on how good it is at its job (I can't find any trustworthy independant reviews of it either, so I'm a bit suspect that it may not be doing a good job). I can vouch for Malwarebytes which you can download and install for free from a number of places - don't bother with the free trial offer you get when installing it, and remove anything it finds.
You can run CCleaner beforehand, just to reduce the number of files you need to scan unless you want it to scan the temp files as well, just out of interest.
Incidentally, Malware bytes can install & scan whilst you still have your other security suite installed. If you decide to try a different antivirus, like Avast, you will need to uninstall your old security program first.
"I've always been mad, I know I've been mad, like the most of us..." Pink Floyd