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Saturday, 27 October 2012

Blackhole malware attack spread via 'Your photos' email

#security alert



A malware attack has been spammed out widely via email to internet users, posing as a message about photos.

In the attack, cybercriminals attempt to trick unsuspecting users into opening an attached file in their browser, redirecting them to a webpage hosted on a Russian website that takes advantage of the Blackhole exploit kit.

The notorious Blackhole exploit kit then attempts to infect visiting computers through a wide number of vulnerabilities.

Here's a typical message that has been spammed out - in this case, pretending to come from a LinkedIn user:






Subject: Your Photos
Message body:
Hi,
I have attached your photos to the mail (Open with Internet Explorer)
The attached file has a name of Image_DIG[random number].htm. If you make the mistake of opening the file attachment in your web browser you will see a "please wait" message:
Please wait a moment. You will be forwarded..
Internet Explorer or Mozilla Firefox compatible only




Sophos detects this HTML file proactively as Mal/JSRedir-M. What isn't obvious to most computer users is that behind-the-scenes obfuscated JavaScript code is redirecting the user's browser to a Blackhole exploit site



More and more of the attacks that the folks at SophosLabs are intercepting involve the Blackhole exploit kit, underlining the importance of keeping your computer's anti-virus software and software patches up-to-date as well as learning to exercise caution about opening unsolicited attachments or clicking on unknown links.

Source-nakedsecurity.


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