A relatively new trojan by the name of Daonolfix is sweeping forums in what early user reports suggest might make it the new Conflicker.
Daonolfix is part of the Win32/Daonol family of trojans and is capable of monitoring network traffic, stealing FTP credentials, preventing access to security Web sites, disabling access to system programs, and redirecting Web searches to sites hosting other malware.
The Daonolfix trojan is reported to be difficult to remove by anti-virus software as it recreates itself when deleted by standard anti-virus tools. If you are infected, Avira has a Daonolfix removal guide here. Microsoft advises that the best way to prevent infection is with the use of a firewall.