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Trojan Spreading Through Facebook Replaces Antivirus Programs
Topic Started: Jul 26 2011, 09:33 PM (71 Views)
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Trojan Spreading Through Facebook Replaces Antivirus Programs
Security researchers warn about a trojan spreading through Facebook and having an unusually sophisticated payload which involves replacing the legit antivirus programs used by its victims.

A lot of effort has been put by its creators into the trojan's propagation routine which uses advanced social engineering, in some respects resembling the Koobface worm.

The malware hijacks the Facebook sessions of its victims and sends messages to their friends via the website's chat function. The messages claim those users are shown in a video that has been posted online. Curious users who click on the link are taken to a spoofed YouTube page with a video that contains their names in the title and fake comments from their own Facebook friends.

The trojan abuses the ability to see a friend's friends on Facebook and uses their names to make the whole scam more credible. The comments are both encouraging and expressing disappointment in order to peak the target's curiosity. However, the page informs the user that they need to download and install a Flash Player update in order to see the video. This is an old trick used to deliver malware. Once installed on the computer, the trojan blocks notifications from the firewall, Windows update or the legit antivirus and displays a pop-up asking the user to reboot the system.

More details here: http://news.softpedia.com/news/Trojan-Spreading-Through-Facebook-Replaces-Antivirus-Programs-213343.shtml
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