Win 32 Sirefef btt virus

Avast has detected and moved to the chest , win 32 Sirefef btt trojan virus. I have done a boot scan and it still pops up every 5 minutes telling me the virus is there and has been moved. How can I get rid of this permanently?

Please attach your logs. (AdwCleaner, MBAM, OTL and aswMBR…!!)
Instructions: http://forum.avast.com/index.php?topic=53253.0