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 3.83.129.253 on port 4747 TCP:
$ telnet 3.83.129.253 4747
Trying 3.83.129.253…
Connected to 3.83.129.253.
Escape character is ‘^]’
$ nslookup 3.83.129.253
ec2-3-83-129-253.compute-1.amazonaws.com
Referencing malware samples (MD5 hash):
d3b411350e9ef770aeb358856d002cf7 — AV detection: 26 / 70 (37.14%)