Access

Hi, I’m new to the site and trying this(Access) as my first box.
I used an****** with f** and got 2 files.
I grep’d “password” on the DB which I turned into a text format and found a file with 3 credentials all of which I tried in t*****.
One of the credentials told me the user didn’t have access so I thought to look at the .zip which I found to be encrypted.
After grepping for a bit and manually looking through files of interest and the log files for anything of interest I’ve found nothing which unlocks the .zip.
Would someone mind giving me hint on what to look for in DB.
It seems I’ve overlooked something simple.