What ideas rehabbing this laundry room? found some mold.

[Nate S.]

I just sold off the old washer/dryer, then found some mold on the bottom of the dry wall. I'm going to be cutting out the dry wall but don't want this to be repeated either. I'm going to be renting this house in the near future, thinking of some ways how I could make this laundry room nice but also moisture protection. What should I put around the walls? concrete drywall? I don't know.