An executable file that was determined to be infected with a virus was terminated from the running processes list. however, after a few seconds, you discover the infected file is running again, despite no other processes appearing to be infected. what type of virus might this be?

Mostly Trojan will has multiple version and I love u virus extra.

Explanation:

As first step workstation or desktop or laptop to scanned for virus and if any virus or malware found then it should be removed first. Operating system should be updated with latest patch, virus signature also be updated once again executed founded by virus infected.

Better to copy new exes and place in the same folder and try to execute again. If still the problem persists download antivirus software such as Norton, bit defender, Kaspersky etc. executable files affected by 15-20 viruses

i think the answer would be a