An impact driver is well worth it when dealing with concrete walls. A basic corded model can be had for about 50 bucks, just make sure it has a chuck tool to r

An impact driver is well worth it when dealing with concrete walls. A basic corded model can be had for about 50 bucks, just make sure it has a chuck tool to really tighten the bit. With that you can quickly drill a pilot hole into hardened concrete, and then use your favorite masonry screws to attach things to the wall. I've had good luck with tapcon screws.