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 5.8.76.208 on port 443 TCP:
$ telnet 5.8.76.208 443
Trying 5.8.76.208…
Connected to 5.8.76.208.
Escape character is ‘^]’
Malicious domains observed at this IP address:
lekort31.top. 600 IN A 5.8.76.208
lekrzl41.top. 600 IN A 5.8.76.208
leksey42.top. 600 IN A 5.8.76.208
lekwoc47.top. 600 IN A 5.8.76.208