IE Defender/Files Secure/MalwareBell/IE Antivirus/Total Secure 2009 Codec has been update, it installs a file with semi-random filename composed from a dictionary:
msys, lsyst, amd, ipl, 32, 64
Possible filenames are:
msysamd32.dll, msysamd64.dll, msysipl32.dll, msysipl64.dll, lsystamd32.dll, lsystamd64.dll, lsystipl32.dll, lsystipl64.dll
It displays alert messages with popups that download Total Secure 2009:
It also drops Internet Shortcut on the desktop, Favorites, Start Menu: Cheap Pharmacy Online.url , Search Online.url and VIP Casino.url
Use SmitfraudFix to remove the infection.