Recovering old, mined ETH

Hi! I mined some ETH around 2018 but I haven't touched it in a long time and I haven't been following the developments around ETH for a while. I started looking into it recently and was wondering if anybody has up to date advice on how best to recover the funds in my account?

I found a backup folder on my PC that has a binary file starting with "UTC--" and also a doc where I had just saved a long hex value in it. I think the hex value is the wallet address which I used to access with nanopool, so I looked it up on etherscan and can see it still has some value in it. Is there anything else that I need? If a password is needed to decrypt the binary file, I'm not sure if I remember what that is, but if possible I could try to guess a few passwords I used to use...