Anonymous planned to hack the Facebook Server by infecting with worm named as "Fawkes Virus". They announced the operation in Youtube. Today Facebook Security application ,Bitdefender Safego detected a virus Backdoor-Bifrose-AAJX that function like the worm described by Anonymous.
"The same day, it appeared on Facebook under the guise of a scam purporting to offer a 'New Facebook Video Chat with Voice Features', according to its description (which, by the way, is in Arabic), if the unwary user follows a link and downloads an archive named scan_facebook.zip." reported in Bitdefender Blog post.
Once the virus infect the system, it will injects itself in IE process, provides a remote attacker unhindered access to the compromised system, logs keystrokes and kills several processes of known Anti-virus, if installed on the computer.
However, it doesn't have the self-replication component Anonymous said it should have. It does connect to a remote server in Egypt instead.
Bitdefender is not sure that this newly born malware is Fawkes Virus.
If you want protection against malwares and scam, just install the Bitdefender safego application.