Download Manager for Wolfram Mathematica 12.3 is a software product for Windows developed by Wolfram Research
It is reported that the following Windows processes are part of Download Manager for Wolfram Mathematica 12.3:
If you want to remove Download Manager for Wolfram Mathematica 12.3 from your computer, just go to Start > Control Panel > Add/Remove programs and select Download Manager for Wolfram Mathematica 12.3 from the list of programs.