The new MBR rootkit can be very hard to detect and removal is a manual process. MBR removal instructions are below:
1. Locate you windows xp or vista bootable operating system cd/dvd.
2. Boot your to the CD/DVD
3. Choose to load the recovery console (for xp) or the repair tools for vista.
4. In the recovery console type fixmbr
5. The fixmbr command will write a new boot sector and erase the rootkit.
6. Reboot your PC and download and install the latest version of MalwareBytes Anti-Malware.