TDL-4 is a bootkit, meaning that it infects a computer's master boot record (MBR), thus ensuring it will run before the operating system. Kaspersky said. This ensures a longer malware lifecycle and makes it less visible to most security software.

The file, which Kaspersky says is named "ktzerules," also ensures that the botnet's owners will retain control over infected computers even when its command and control centers are shut down, making it indestructible, in effect.

read more... http://www.technewsworld.com/story/72786.html

http://www.popsci.com/technology/article/2...-indestructible

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I never install Antivirus on my Windows laptops until Oct 2010.
until after reading some article about "bots"
Microsoft's article - http://www.microsoft.com/security/pc-security/botnet.aspx

This post has been edited by tanhks: Jan 24 2012, 03:41 AM

never heard about this kind of botnet.

how on earth could this kind of botnet ever exist..just wonder of anything which is moree indestructible than this