I encountered this guy a little after 1:30 am IRL, I dont think I had been playing that long maybe an hour or two. I assumed it was a bugged out kerfur because of the way it sun in a circle in my garage. Until I realized kerfur was standing right next to me. Its behavior was a bit different from what you described. It went around my base checking each door before coming to the bedroom (where I decided to hide with my emotional support kerfur.)
As detailed in the SS, I could pause, but the box would overlay the pause menu. I was also able to sleep and watched it run around my base before standing on my porch waiting.
It seemed like it went to every door in my base with a keypad, but more so just felt like I was being observed.
10/10 do recommend, scared the pants off me. 