There was two separate malwares spreading in the social networking site Facebook (and MySpace was affected as well). Until the Facebook security team had capable to block the Koobface worm we had a protection via Windows-based anti-virus software.
Russian-based Kaspersky Lab reported about the existence of the worm on 31th July. It took several days until there was coverage malware write-ups available from notable anti-virus vendors.
The following malware names have been assigned by the AV industry (listed in alphabetical order):
McAfee – W32/Koobface.worm
BitDefender – Win32.Worm.KoobFace.A
Kaspersky Lab – Net-Worm.Win32.Koobface.b
Panda Security – Boface.A [their technical name is W32/Boface.A.worm]
Sunbelt Software – Net-Worm.Win32.Koobface.b
Sophos – detected proactively as Mal/Heuri-D, Mal/Heuri-E, Mal/Emogen-N and Mal/Packer
Symantec – W32.Koobface.A
The protection exists before the write-up release in many cases, however.
You can read the entire SecuriTeam Blogs entry written on Friday here.