Found a guide on PCBugSquad.com on removing this new rogue:
Antivirus Master is a new rogue anti-spyware program that is a master of nothing. This program proclaims itself as a master of removing malware from your computer. In reality, though, this program is the actual infection. When Antivirus Master scans your computer it will list infections that do not exist. Then, in order to remove these infections, you must first purchase the software in order to do so. As we did not purchase it, I am sure once it was purchased those threats would immediately be gone.
Source: How to uninstall Antivirus Master (Removal Instructions)
Filed under: General Security