I installed Avast in my Dad's computer to fight this infection, did a full scan, which cleaned some stuff, but "Provider" wasn't cleaned; this adware only affects the internet browser.
Tried a scan with SpyHunter and came up with something called Zwiiky, which I don't know if it's real, but it's something else that Avast didn't pick-up. This wasn't cleaned either, because you need to pay and register the software.
Why isn't Avast detecting these infections?