Not sure exactly what you're after, but there's basically two things going brass-wise. Tuba and bass trombones in octaves playing the 'bwamms', and then horns and tenor trombones playing the swelling chords above this. What's the music? A pretty standard Bourne/Zimmer mash-up by the sounds of it.
It's obviously some kind of bass synth, with a separate boom/crack every couple of bars for emphasis. Identifying it precisely by ear (eg. how it was created with what synth/instruments) is more or less impossible I'd imagine.