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 distribution located here:
hXXp://okagks05.top/downfiles/file.exe
Malware botnet controller located at 31.13.213.36 on port 443:
$ telnet 194.87.185.143 443
Trying 194.87.185.143…
Connected to 194.87.185.143.
Escape character is ‘^]’
okagks05.top. 600 IN A 194.87.185.143
okartu06.top. 600 IN A 194.87.185.143