No. You may have a rootkit installed. Your computer becomes a virtual computer, with the real computer being completely owned by the owner of the rootkit. There are no known detection or removal techniques. Even MicroSoft's rootkit detection tool urges you to contact them if you detect a rootkit. Most viruses and spyware is tested against the available anti-virus and anti-spyware systems. You won't be able to detect a new virus with ANY anti-* program.
Rootkit revealer and backlight.
Rootkit
rootkit revealer by sysinternals. Backlight by F-secure.
I believe you are referring to anti-rootkit software. Firstly, a rootkit is something that allows other threats (eg. viruses, spyware) to hide themselves. (Rootkits are often bundled with keyloggers or trojans.) Therefore, conventional anti-virus products cannot remove them because they are hidden. Anti-rootkit software is designed to remove the rootkit.
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The software looks for running processes that don't match up with the underlying program filename, and the software compares files, registry entries, and processes provided by the OS to the list it generates from the raw data. If the list differ, a rootkit is suspected.
Rootkit is a type of malware that hides its presence while it's active on a computer. Rookit hides other malware too. It can be extremely difficult to remove a rootkit from a computer. However, solid antivirus software usually removes rootkits without any problems. Source: http://deletemalware.blogspot.com
RootkitRevealer, BackLight
A+ pg. 1052: A rootkit running in user mode intercepts the API calls between the time when the API retrieves the data and when it is displayed in a window.
'''In fact, RootQuest 1.0.1 can help you. I'd like to give you a full introduction. Rootkits can be able hidden on computers and remain undetected by anti-virus software, RootQuest finds and removes any rootkit that is hidden on your computer using advanced rootkit detection systems. ''' RootQuest is a good solution to detection and remove all rootkit that currenlty running as background services on computer system. Designed for Windows 2000/XP/2003/Vista, the program will monitor system proccesses and remove all rootkit components quickly and securely. Not only is it a great tool for finding rootkits, it also can prevent the installation and infection of many rootkits. Features: * Real-time protection from hackers and crackers. * Auto detect rootkit processes. * Protected resources in the hard drive. * Finds and removes rootkit . * Prevents rootkit being installed. * Scan detection based signature . * Self-protection all rootkit attack Therefore, it is a virus software that can be used within organisation. Hope this help you! http://www.globalfreeware.com/RootQuest-101.html