how to remove the .exe Trojan horse SHeur4.zp virus?

I got infected with the trojan horse sheur4.zp and it infected most of my computer files, music and picture and some registry files. How do I get rid of this infection.

I downloaded a defender file and installed it but it requires to connect to the internet which I don't have on that pc. I only use BIS internet. Do you have any other plan?

Depending on the sophistication of the malware in question, there is no certainty your 'corrupted' files can be cured/cleaned, but, after clearing your temp files, perhaps you can restore the files from an earlier version?

Try in order:

TFC (TempFileCleaner from bleepingcomputer)
RogueKiller (bleepingcomputer)
MalwareBytes AntiRootkit
MalwareBytes AM
AdwCleaner (Bleepingcomputer)

Then left click on a file you'd like to recover, select properties, see if any previous versions exist from restore points....

Sometimes files can be encrypted /destroyed thoroughly, other times they are simply hidden, and can be recovered; however, sometimes, there might be no escaping a loss of data, deleting partitions, and reformatting/reinstalling OS...