Beware of Dubious Facebook Page: Trend Micro
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by Press Release
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The page called “10 lies girls ALWAYS tell guys! funny!” is a classic example of how Facebook pages can use JavaScript to spam users who are curious enough to hit the “Click here” button to view its contents. However, in order find this out, one must follow the instructions displayed. It asks users to hit Ctrl + C to copy the JavaScript and Alt + D to select the address bar. The succeeding steps from the prompt then run the JavaScript. The top portion shows the original code that the user is prompted to enter while the lower portion shows the decrypted code. Notice that the original code has been obfuscated, in this case, using two well-known public JavaScript obfuscators—the Dean Edwards Packer and the Free JavaScript Obfuscator. If one goes through the code that users are prompted to enter into the address bar step by step, it appears that it is meant to keep the specified page element hidden. It also overwrites the contents of a separate specified page element with that of another page element. The code also creates a simulated mouse click on the “suggest” element of the page . The code toward the end sets five-second timers that click items found in the suggestion box, which selects all of the user’s Facebook contacts and suggests the application to them. It then creates a simulated mouse click on the “like me” element of the page. While this code does not pose any other immediate threat apart from spamming Facebook walls and requests, there is nothing stopping cybercriminals from using these techniques to spread malware. |
Tags: Facebook , Bug , Trend Micro
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