The host at this IP address 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 at 198.244.224.125 on port 443.
$ telnet 198.244.224.125 443
Trying 198.244.224.125…
Connected to 198.244.224.125.
Escape character is ‘^]’
Malicious domains observed at this IP address:
biswapshoco.com. 60 IN A 198.244.224.125