The host at this IP address is obviously operated by cybercriminals. It is running a malware botnet controller which is being used to control infected computers (bots) around the globe using a trojan horse.
Malware botnet controller located at 20.203.173.201 on port 58110 TCP:
$ telnet 20.203.173.201 58110
Trying 20.203.173.201…
Connected to 20.203.173.201.
Escape character is ‘^]’
Referencing malware samples:
MD5 5d83f2a546c2e4071bb3b868b5bc68be
MD5 bce0641169963d3a42c86e0bd7840409
MD5 f7ce5b9566de9ebbb48f395afcc1adbd