Reminds me a bit of the film "A Simple Plan"

Good movie

was that the one where they found mob-money while out hunting in the wilderness?
maybe in a light plane crash?

and they resolve to stash the money for time being and everybody keep their mouths shut, but at least one idiot either opens his mouth or starts splashing his cut e of the money, till they are all in a running battle with the mob come to town?

I thought the same thing. Theyou both have characters trying to hide something but living in fear the whole time. Great movie. Anymore recommendations for stuff like that?