Hey there I tried my best to get close to the sound, I hope this helps. I used the Logic Pro stock Plugin Alchemy for this. First I used 2 saw waves, one I pulled down 12 semitones, the other I pulled down 24 semitones. I pulled both Unisons up to 4, then I pulled the cutoffs for both Oscillators down to 0 Hz. For the Cutoffs I modulated both with the Step Sequencer up to 30% on the higher Oscillator and 35% on the lower one. The speed at which the Step Sequencer was going at was 1/64T.