1.6 launcher has a virus

Put the summary of the bug you're having here

*What I expected to happen was to start the game normally

*What actually happened was my antivirus detected a virus in the new launcher

Steps to Reproduce:
1. download the new minecraft.exe from https://mojang.com/2013/07/minecraft-the-horse-update/
2. try to start the game
3. antivir detects a virus called "W32/exploit.gen ", deletes it and the game won't start