The utilities can be used to remove of some of the most common viruses. The list is updated on regular basis.

Win32/Tanatos – A, H, I, M variants

If the infected computer is connected to LAN, disconnect it and re-connect only after all other computers have been checked and cleaned.
Running the tool for removal of infected files. The tool will automatically scan all available discs and will try to heal the infected files. If an active virus is found in memory, the tool will ask the user to reboot the computer. Healing will be performed during operating system boot-up sequence, so any active virus cannot interfere with the healing process.
* Update you AVG after restart and run a complete test.

Download rmtanat

Source : AVG