New malicious campaign have been detected by Trend Micro that is circulating on Facebook, the malware is called TROJ_FOOKBACE.A and it starts by inviting Facebook users to install a new cool theme for the Valentine , I think this will attract any user that are looking to show the real love for his partner.
By Clicking on the Install button computer will start to download a suspicious file called FacebookChrome.crx that Antivirus flag as a Trojan horse. And next the malware will start to do what is required from monitoring online user activity, redirecting victim to their webpage asking for mobile number and more.
What is interesting here that we used to prefer chrome and Firefox for the flexibility and plugins but here it will be better to use Internet explorer as the attack can be more effective with these extension possibilities.
To protect your system be sure to update your antivirus signatures and to have a fully patched operating system and applications.