It may be:
Register MediaRing Talk program or Sound Blaster register reminder or Remote Access Trojan.
Register reminder may be stopped without problem.
Trojan may alter System.ini and/or Win.ini. One can choose to let Mosucker randomly decide what autostart method to use. Produces an error message while installing ""Could not find setuplog.bat"" which apparently is used for autostarting. It copies itself to $temp first, as a file named pkg*.exe, ""pkg"" being a fix string. It also copied itself to $windows/unin0686.exe.
Check the manufacturer of this file.
Suspend its run or kill this file.