WinRaRa vs my antivirus Avast?

Hello!
I am sorry for my bad English. :-\

Me is antivirus Avast! After last updating started to find from earlier created archives ( .exe) Trojan. It is not enough of it Avast! Has removed file responsible creation (.exe) files in WinRar-> Default. SFX and Zip. SFX (Win32:Trojan-gen. {UPX!})? Install to put different versions “WinRar” everywhere one and too. :-[

What vps version do you have?