I remember watching a movie when I was much younger during the 90’s, so my memory of is a little rusty so going to try my best.

I remember it involved robots disguised as humans (think there may have been some disguised as children) and they infiltrated, I don’t know a group of explorers or soldiers in a snowy area. Slowly kill off each person and they not sure who it might be so everyone suspects each other?

I know it’s a very vague description but it was forever ago. Popped up in my head and it’s starting to bug me. If anyone can remember anything similar that would be great. It pretty much sounds like the thing but I know there were robots or cyborgs involved somewhere. There was a scene where the two characters cut their hands to show they bleed to prove they are the real versions.