gregsvc.exe is a program which is probably NOT a virus. So, if gregsvc.exe is on your computer, it is probably ok, and will NOT be a cause for concern. Even if your PC is clean, it is still recommended to run a good antivirus with a good detection rate, in order to defend your PC against potential security problems.
Normally, this application is stored in C:\Program Files\Acer\Registration\GREGsvc.exe.
The MD5 checksum for this file is 84e58fea8b1a7537696a20c59cb9b0c9.
This application is set up as a Windows service. This means it operates on your system in background, usually without showing anything to you. Most Windows services are legit programs, which perform useful features to other applications or to Windows in general.
This application runs as a 32-bit program. It can not benefit of the full set of features of current PC chips. This ordinarily happens because the authors did not upgrade it to 64-bit code.
The description extracted from the file is Global Registration Service.
File version 1, 0, 0, 3.
Publisher Acer Incorporated.
Copyright notice Copyright (C) Acer Incorporated 2009.
Some dangerous functions of Windows appear to be used, such as functions for tapping the keyboard. We advise you to perform more in-depth research about this program.
The digital signature is missing from this program. The publisher did not bother to sign it. This is probably bad.
It has an uninstall string in registry, which is good. si are uninstall.