Can someone please tell me what this Facebook Virus is?

[Athanasius Koh]

This does not seem like a 'facebook' virus to me, looks like your average virus hiding in a website.

It could be a Trojan since you are unable to locate it in your computer. I recommend you do the various scans you did a few more times, giving the software a better chance of finding the virus.

If that does not work, and your computer worsens, I suggest you go to an IT specialist immediately, so that he is able to stop the virus or backup you files for the least.

Also, change your passwords, both your facebook and your respective e-mail. It could be a Hacker Virus trying to enter your account and computer.