If it behaves as an infection, then presume it's an infection. Windows doesn't do tricks like that by itself since Win98. Dunno about Win10 tho.
Malware has got very sophisticated nowadays, it's not like in the good old times, where you could simply end task the suspicious process.
Thanks to global economic crisis, which causes lack of food, which again causes regular fasting, and which finally causes increase of IQ level (lol), viruses nowadays know 100s of new ways to nest in your device.
About getting rid of infection I suggest 3 things:
1. Get and run Malwarebytes:
2. Get and run ComboFix (not designed for above Win8):
Both are free and super effective.
3. If they fail, then you need to Secure Erase your SSD and reinstall Windows.
Don't forget to backup your important stuff first.
After you've rid of it, learn to properly firewall your OS; learn what is important and what is trash.