It may do the following things to your computer.
-Disable Anti-virus protection
-Modify registry keys
-Disable security center
-Disable internet connection
-Block access to well known anti-virus sites
-Install Fake Anti-viruses.
-Steal your money (So much for your bank account.)
This rootkit is a big pain in the ass to remove and may require a reformat, or 10 hours removing it via kaspersky Rescue disk. It's spreading as fast as the H1N1 could say oh shit. It is also called Sirefef by some people.