Very interesting! A tutorial to check if kimwolf is running on your network would be nice
nmap -Pn 192.168.0.0/16 -p 5555
Replace netmask as appropriate.Now that it's publicly known I guess it's possible that they will close the door post-infection to avoid detecton. And it won't detect any other devices it's spread further to.
If you have a cheapo Android-based TV box or stick like the ones mentioned, throw it out or reflash it with Armbian after forensics.
I'm sure there are HN readers out there who have one of these. They were very popular a couple of years back.
Have not tested it myself ymmv.
[0] https://synthient.com/blog/a-broken-system-fueling-botnets