You have compromised a server and successfully gained a root access.

https://linuxsecurityblog.com/2018/12/23/create-a-backdoor-with-cryptcat/

Cryptcat enables us to communicate between two systems and encrypts the communication between them with twofish, one of many excellent encryption algorithms from Bruce Schneier et al. Twofish’s encryption is on par with AES encryption, making it nearly bulletproof. In this way, the IDS can’t detect the malicious behavior taking place even when its traveling across normal HTTP ports like 80 and 443.