While Apple has said it "is developing software that will detect and remove the Flashback malware" that has affected up to 600,000 Macs worldwide, it has yet to release any fix. In lieu of that a few security and antivirus firms have gone ahead and released their own Flashback removal tools.
Kaspersky Lab, a Russian antivirus firm, has released the Flashfake Removal Tool. The firms asks that you first check here to see if you Mac is infected with Flashback. If your Mac is, then you can download