Your computer becomes a "zombie" in a botnet. Hackers use your machine to launch DDoS attacks, send spam, or host illegal content. You are legally liable for the traffic coming from your IP address.
Files labeled with "Kg.exe" or "Patch.exe" are almost universally flagged by antivirus software for a reason. Because these programs are designed to modify the code of another software, they often contain: Etabs V20 Kg.exe LINK