Zeus Virus can propagate through phishing messages that are generated from the account that was already compromised with phishing. That phished account will then start sending messages to your friends containing links to the ads and would ask them to simply check-out the video or product by clicking on such links. This way the virus will go viral.
Readers are requested to stay refrain from clicking such links, because they might end up getting their accounts compromised The virus is very sophisticated, so that it could replace the website of a bank with the mimicked page of its own.
That fake page could then ask for your security information and some other important data that could be easily sold in black market.
According to many sources, perhaps it has been confirmed that those pages are being hosted by Russian Mafia (known as Russian Business Network as well).
The virus is well-known for what it use to do. It was detected once back in 2007, and after that detection it started to spread online. The virus is well-designed so that if you would click on it, the possible and important data like Passwords and Bank Accounts can be stolen easily.
Does Facebook Took Action Against It?
Facebook is aware of it, but it is unlikely that Facebook is going to take any action against it.