Malware that uses rootkit technology are the worst because they are
hardest to detect and can even stay infected on a machine for years
without being discovered. Here we put 15 dedicated antirootkit
applications to the test to see the effectiveness of these programs.
Although 64-bit Windows operating systems are generally safe from rootkit infection because by default the operating system only accepts signed driver files, there were previous cases where legitimate digital certificates were stolen by hackers and used to sign rootkit drivers to bypass security software and Windows defenses. Antivirus software was not much of a help either because the Stuxnet worm successfully stayed infected on the computers for years before it was discovered by VirusBlokAda, the developer of VBA32 antivirus software.
Since antivirus software are far from being perfect in catching rootkits, we’ve put 15 dedicated anti-rootkit tools to the test and see if they are able to detect the 3 different keyloggers (All In One Keylogger, Invisible KeyLogger Stealth, Elite Keylogger) that uses rootkit technology which we have installed on our test system.
1. avast! ANTIROOTKIT
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2. AVG Anti-Rootkit
This free anti-rootkit tool by AVG suffers the same fate as avast! because it has been abandoned since 2006 due to the integration of this anti-rootkit into their antivirus software. The program requires installation, a reboot and either manually run as admin or disable UAC to run. The result of AVG Anti-Rootkit is also the same as avast! where only All In One Keylogger is detected while missing Elite Keylogger and Invisible KeyLogger Stealth. The “Remove selected items” button does not delete the infected files but replaces the last character of the file’s extension with an underscore, for example from .exe to .ex_
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3. Bitdefender Removal Tool / Rootkit Remover
We weren’t able to determine the if Bitdefender’s antirootkit tool is called “Removal Tool” or “Rootkit Remover” because the program’s name and website says differently when they are the exact same application. Bitdefender Removal Tool is free, portable and up-to-date (last update on February 2013) but can only detect known rootkits through signatures and not the undetected ones. The scan takes merely a second to tell you if there are any rootkit threats detected. Both 32-bit and 64-bit versions available. Bitdefender Rootkit Remover fail to detect all 3 rootkit keyloggers.
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