Zlob fake codec has been update. It drops the following file:
%SYSTEM%\jkqvjzl.dll
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\SharedTaskScheduler]
"{c96395b8-ab09-46a4-b539-7ddf6e061808}"="ceroxylon"
It also installs Toolbar, BHO, Antispycheck Rogue software...
SmitfraudFix removes the infection.