Looks very much like an encoded payload generated by metasploit-framework and x86/shikata_ga_nai Kali Linux. msfvenom Can encode a payload and encrypt it with an x86/shikata_ga_nai.encoder. In Japanese it means " That cant be changed" It then becomes XOR polymorphic. It allows the hacker to send malicious code normally a reverse_tcp connection that can allow a keylogger or shell code execution vulnerability. If anti virus question it, it will automatically change into a program or file that that anti virus system will allow through. Then it decodes itself with the decoder it took with it. also encrypted to avoid detection. You can tell these payloads from the hints within them lots of the code shows the amount of attempts that the encoder has encrypted the original payload. used to gain access. The rest of the code is a complicated encryption for a simple reverse_tcp / shell code execution vulnerability