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 18.104.22.168 on port 1234 TCP:
$ telnet 22.214.171.124 1234
Connected to 126.96.36.199.
Escape character is ‘^]’
$ nslookup 188.8.131.52
$ dig +short solex-feb.duckdns.org
Referencing malware samples (MD5 hash):
a13e428bef6d01156cec4c576dc386f1 — AV detection: 31 / 68 (45.59%)