The third type is MBR Rootkits or Bootkits. The first type, the “Kernel Rootkits” usually add their own code to parts of the operating system core, whereas the second kind, the “User-mode Rootkits” are specially targeted to Windows to startup up normally during the system start-up, or injected into the system by a so-called “Dropper”. There are basically three different types of Rootkit. Whether this is normal software or malware programs. Their only purpose is to hide software and the traces left behind in the operating system. Rootkits in themselves are not dangerous. If a threat uses rootkit technology to hide it is very hard to find the malware on your PC. They are used to hide the presence of malicious object like trojans or keyloggers on your computer. They are now an emerging type of Super Spyware that hides effectively & impacts the operating system kernel directly. Rootkits are more common in the spyware field, and they are now also becoming more commonly used by virus authors as well. A virus combined with a rootkit produces what is known as full stealth viruses. It is used for malicious purposes by viruses, worms, backdoors, and spyware. Rootkits for Windows are typically used to hide malicious software from, for example, an antivirus program. A Rootkit virus is a stealth type of malware that is designed to hide the existence of certain processes or programs on your computer from regular detection methods, so as to allow it or another malicious process privileged access to your computer.
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