lol
u all noobs
this is not asic, this is botnets
A typical CPU does about 1KH/s on VTC. Botnets don't have GPUs (not enough compromised computers have them, the drivers or opencl aren't installed etc. etc. etc.)
Botnet operators aren't dumb enough to load peoples PCs 100% so they notice the infection. They would limit CPU usage to maybe ~30% to hide it. So say 300 H/s per infected machine.
120MH / 300H/s = 400,000 infected machines.
I doubt it. I think it's someone with a lot of GPUs.
There are troyans used to point miners using the GPUs at low rate.