As we mentioned in older post  that many av companies released Flashback malware removal tools like kaspersky and McAfee

apple is also released Flashback malware removal tool 
you can download it from  http://support.apple.com/downloads/




official relase notes 
“

About Flashback malware removal tool
This update removes the most common variants of the Flashback malware. This update contains the same malware removal tool as Java for OS X 2012-003.


If the Flashback malware is found, a dialog will be presented notifying the user that malware was removed.


In some cases, the Flashback malware removal tool may need to restart your computer in order to completely remove the Flashback malware.


This update is recommended for all OS X Lion users without Java installed. “


SHA1: d4372b9bb14387a20567817ab7e03ea103fdffc2