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As we move toward another quarter of 2007, we would like to take a moment and look back at the malware trends for the last three months. Our stats show that two of the top-five caught malware are variants of JS/Feebs.
Recently, we have had much success in catching new variants of JS/Feebs under the .x and .r detections which, in fact, identify hundreds of other minor variants. The way JS/Feebs authors operate is by mass-spamming people with emails containing a .ZIP file that includes a .HTA (Hypertext-Application) file which acts as a downloader for another W32/Feebs. People should be particularly careful when opening .HTA files as they often contain malicious code.
Moreover, in Q1 we continued to observe new variants of Downloader-AAP, W32/Stration, and even the circulation of older viruses and worms like W32/Sality, W32/Mytob, and W32/Mydoom.
Finally, in a shameless self-promotion, Q1 has witnessed a huge success for us in terms of writing new generic detections as you can see here
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