Game.exe and Updater ?

I have seen on some servers that the actual game.exe has actions just like the updater? Is there a way to mod the game.exe for this or a way to make the updater as the actual launcher?

If you try to say that the updater is the same thing as the game.exe ..
The answer is no, because in a file (game.exe) is the IP address and the other file (Updater.exe) is the address where they are running the patch files.
Cordially George St-Pierre