First time i heard this was when Mefjus dropped it back in October at Noisia Invites, actual merker, The whole Into Black EP is going to be pure danger.
I've heard this tune for the first time last year at dour festival in the dnb stage, it took me a year to find the ID and im so fucking happy i found it 3 days ago and yes, i was at dour that time again when i managed to ask a friend while it was playing! :)