To be perfectly candid, I don't recall. For my first year as a drummer, at my instructor's demand, I did nothing but pad/snare work. Then, also at my instructor's demand, I incorporated a hi-hat and a bass drum for another six months. When I got my first full kit, I practiced mostly to country and rock, but I don't remember the initial song I tackled. AC/DC's "Back in Black" would be a fair guess.
The first song I remember learning and not just noodling around with was She by Green Day, I played along with music for a while but that was the first song I actually spent time listening to and figuring out how to play on the kit.
As far as I can recall, my first public performance on drum kit was playing ‘MacArthur Park’ in high school concert band. I was actually 1st trombone in the band, but the regular drummer couldn’t cope with the syncopated bit in the bridge, so the band director got me to play it.