Zlob fake codec has been update. It drops the following file:
%SYSTEM%\zafhemm.dll
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\SharedTaskScheduler]
"{8d332d3a-0114-4492-8521-c2b93b4db160}"="aspalathus"
It also installs Toolbar, BHO, Virus Response Lab 2009 software...
SmitfraudFix removes the infection.