Facebook - Avoid the New "Messenger" Application

Posted Tuesday, April 26, 2011 10:08 AM by hwaldron

Trend Micro reports that a new application called "Facebook Messenger" is being presented to users. Please avoid this malicious attack and be careful of any link or application presented to you in this social networking environment.

Facebook Events, Credits, and Passwords Being Used for Attacks
http://blog.trendmicro.com/facebook-events-credits-and-passwords-being-used-for-attacks/

QUOTE: Facebook has expanded its range of service offerings, making the site so much more than a place where users can interact with one another. It has been said several times that Facebook is bound to replace email as a means of communication, as it provides a more convenient way for users to send messages.  This convenience, however, was also leveraged by cybercriminals in a recent spam run wherein users were urged to download an application called Facebook Messenger. This would supposedly make it easier for them to access messages sent to their Facebook accounts.

The attack starts with spammed messages that look like a Facebook notification. The email message alerts the users about a message that has been sent to their Facebook accounts. It tells the users to click a link to view the said message. Clicking the message, however, displays a download page for an application called Facebook Messenger.

The downloaded file named FacebookMessengerSetup.exe is malicious and detected as BKDR_QUEJOB.EVL. BKDR_QUEJOB.EVL opens TCP port 1098 to listen for commands sent by a malicious attacker. The nature of the commands may include updating the malicious file, downloading and executing other malicious files, and starting certain processes. It also queries the system for information such as installed antivirus products and OS version then sends the data it gathers to a certain SMTP.

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