(...)
Also, note the executebles begin with Hex transliteration of "BIOS FOOD".
These are all my findings for now. I was not able to connect to SSH with the private key to any of the users listed on the server, either
I was playing a bit with this and I am afraid it is abandoned. No one is writing about it, I'm also like you not convinced that this 1KWkDsv9VsdwsCWpJ2mu9R5AgUWgSPQHjf is THE address.
What I like is whole terminal stuff. What I don't like is that not all commands work as should. For example you can't pass arguments to functions, ls -a doesn't work. I'm a bit afraid that it is not some sort of shell but simple "paragraph" text input program, you add one space too much or use capital letter and it wont recognize.
So far - dead end. I'm trying to run service.bin somehow.
Me to but to no avail. Commands like "service" with or without the ".bin"/the full path don't work. Maybe you need to be authenticated as user1, I thought, and hence the attempts to SSH as user1, all to no avail. I kind of thought that maybe the whole thing was dead too, but at one point of the day the server CHANGED the response I was getting on my SSH client, what makes me think that maybe they turned it on, uploaded the missing RSA public key or at least they are playing with the terminal on its other end

All that was yesterday as I can't spare even a moment for it today