The host at this IP address 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 13.58.89.178 on port 80 (using HTTP POST):
hXXp://13.58.89.178/contador/serv.php
$ nslookup 13.58.89.178
ec2-13-58-89-178.us-east-2.compute.amazonaws.com