Viruses now penetrating deeper
New malware variants have taken researchers by surprise by adapting new "stealth" methods to penetrate systems deeper so as to avoid detection, according to Kaspersky Lab.The antivirus company said in a video conference Wednesday, a new variant of botnet, Sinowal--also known as Torpig--marks the first time cybercriminals have used such sophisticated methods.
Kaspersky said Sinowal writes itself to the user's hard drive master boot record (MBR), the operating system's lowest level, and has been successful in avoiding detection by antivirus products.
It said the worm has has over the last month been actively spreading through a number of methods including Web sites exploiting the Neosploit rootkit and a vulnerability in PDF software, Adobe Acrobat Reader.
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