Thanks for your response 🙏
I went to Apps & Features and can see nothing like "aria" in there nor anything that looked like a download process
I use Firefox AND Opera simultaneously and checked both their extensions loaded and again I can't see anything there
There were hourly utt.****.tmp files and a logfile and I always delete them all but they re-appear hourly always with different filenames
( In fact, I made a System Image and deleted ALL deleteable files in the Temp folder
Is it possible this is something malicious or just a benign helper App spawned by some other App?
Again, Thanks