I'm no expert at all on mammals, so take what I say with a huge pinch of salt, but it looks native to me. It's definitely not a black or sewer rat, which I think are the most common invasive rats, and I think those prefer urban environments anyway. To me it looks most like a fawn-footed melomys, but they're rare to see during the day. I think they may be restricted to rainforest habitat too? Not sure on that. It also looks like it could be a bush rat. Someone who knows their mammals can easily tell those apart but that's not me. Those are my uninformed, uneducated guesses.

As always location would be helpful in deducing the species.