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 3.134.115.127 on port 51078 TCP:
$ telnet 3.134.115.127 51078
Trying 3.134.115.127…
Connected to 3.134.115.127.
Escape character is ‘^]’
$ nslookup 3.134.115.127
ec2-3-134-115-127.us-east-2.compute.amazonaws.com
Referencing malware samples:
MD5 6d4a3b384063526d3db581640141592d
MD5 898f46f2714d3999b195207765753c19