How to open .cgi format?

Question

CGI

strange but notepad and notepad swear

Answer 1

And why did you decide that it must be a text format? I can write a C++ script to change the extension to cgi. Explain to the server how to start it and everything will work. Script in binary format.

Answer 2

Compiled ancient binary for Linux x64. Apparently, assembled under Centos 5.
You need to disassemble.
Judging by the GLIBC inside, it is written in C/C++.