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• November 15, 2007 •

Microsoft Updates Malicious Software Removal Tool

Microsoft has updated the Microsoft Windows Malicious Software Removal Tool to help remove specific, prevalent malicious software from computers that are running Windows 2000, Windows Server 2003, Windows Vista or Windows XP.

The Malicious Software Removal Tool is a roll-up of all of the malware removal utilities that Microsoft had previously released. It scans your PC and removes these viruses and worms:

Malicious software family

Detection/Removal Added (Tool version)
 Win32/BerbewJanuary 2005 (v 1.0)
 Win32/DoomjuiceJanuary 2005 (v 1.0)
 Win32/GaobotJanuary 2005 (v 1.0)
 Win32/MSBlastJanuary 2005 (v 1.0)
 Win32/MydoomJanuary 2005 (v 1.0)
 Win32/NachiJanuary 2005 (v 1.0)
 Win32/SasserJanuary 2005 (v 1.0)
 Win32/ZindosJanuary 2005 (v 1.0)
 Win32/KorgoFebruary 2005 (v 1.1)
 Win32/NetskyFebruary 2005 (v 1.1)
 Win32/RandexFebruary 2005 (v 1.1)
 Win32/ZafiFebruary 2005 (v 1.1)
 Win32/BagleMarch 2005 (v 1.2)
 Win32/BropiaMarch 2005 (v 1.2)
 Win32/GowehMarch 2005 (v 1.2)
 Win32/SoberMarch 2005 (v 1.2)
 Win32/SobigMarch 2005 (v 1.2)
 Win32/Hackdef**April 2005 (v 1.3)
 Win32/MimailApril 2005 (v 1.3)
 Win32/RbotApril 2005 (v 1.3)
 Win32/SdbotMay 2005 (v 1.4)
 WinNT/IsproMay 2005 (v 1.4)
 Win32/KelvirJune 2005 (v 1.5)
 Win32/LovgateJune 2005 (v 1.5)
 Win32/MytobJune 2005 (v 1.5)
 Win32/SpybotJune 2005 (v 1.5)
 Win32/HactyJuly 2005 (v 1.6)
 Win32/OptixJuly 2005 (v 1.6)
 Win32/OptixproJuly 2005 (v 1.6)
 Win32/PurstiuJuly 2005 (v 1.6)
 Win32/WootbotJuly 2005 (v 1.6)
 Win32/BagzAugust 2005 (v 1.7)
 Win32/DumaruAugust 2005 (v 1.7)
 Win32/SpyboterAugust 2005 (v 1.7)
 Win32/Zotob.AAugust 2005 A (V 1.7.1)
 Win32/Zotob.BAugust 2005 A (V 1.7.1)
 Win32/Zotob.CAugust 2005 A (V 1.7.1)
 Win32/Zotob.DAugust 2005 A (V 1.7.1)
 Win32/Zotob.EAugust 2005 A (V 1.7.1)
 Win32/Bobax.OAugust 2005 A (V 1.7.1)
 Win32/Esbot.AAugust 2005 A (V 1.7.1)
 Win32/Rbot.MAAugust 2005 A (V 1.7.1)
 Win32/Rbot.MBAugust 2005 A (V 1.7.1)
 Win32/Rbot.MCAugust 2005 A (V 1.7.1)
 Win32/BobaxSeptember 2005 (v 1.8)
 Win32/EsbotSeptember 2005 (v 1.8)
 Win32/GaelSeptember 2005 (v 1.8)
 Win32/YahaSeptember 2005 (v 1.8)
 Win32/ZotobSeptember 2005 (v 1.8)
 Win32/AntinnyOctober 2005 (V 1.9)
 Win32/GibeOctober 2005 (V 1.9)
 Win32/MywifeOctober 2005 (V 1.9)
 Win32/WukillOctober 2005 (V 1.9)
 Win32/BugbearNovember 2005 (v 1.10)
 Win32/CodbotNovember 2005 (V 1.10)
 Win32/MabutuNovember 2005 (V 1.10)
 Win32/OpaservNovember 2005 (V 1.10)
 Win32/SwenNovember 2005 (V 1.10)
 Win32/IRCBotDecember 2005 (V 1.11)
 Win32/RyknosDecember 2005 (V 1.11)
 WinNT/F4IRootkitDecember 2005 (V 1.11)
 Win32/BofraJanuary 2006 (V 1.12)
 Win32/MaslanJanuary 2006 (V 1.12)
 Win32/PariteJanuary 2006 (V 1.12)
 Win32/AlcanFebruary 2006 (V 1.13)
 Win32/BadtransFebruary 2006 (V 1.13)
 Win32/EyevegFebruary 2006 (V 1.13)
 Win32/MagistrFebruary 2006 (V 1.13)
 Win32/AtakMarch 2006 (V 1.14)
 Win32/TorvilMarch 2006 (V 1.14)
 Win32/ZlobMarch 2006 (V 1.14)
 Win32/LockskyApril 2006 (V 1.15)
 Win32/ReatleApril 2006 (V 1.15)
 Win32/VallaApril 2006 (V 1.15)
 Win32/EvamanMay 2006 (V 1.16)
 Win32/GandaMay 2006 (V 1.16)
 Win32/PlexusMay 2006 (V 1.16)
 Win32/CissiJune 2006 (V 1.17)
 Win32/FizzerJune 2006 (V 1.17)
 Win32/AlemodJuly 2006 (V 1.18)
 Win32/ChirJuly 2006 (V 1.18)
 Win32/HupigonJuly 2006 (V 1.18)
 Win32/NsagJuly 2006 (V 1.18)
 Win32/BankerAugust 2006 (V 1.19)
 Win32/JeefoAugust 2006 (V 1.19)
 Win32/BancosSeptember 2006 (V 1.20)
 Win32/SinowalSeptember 2006 (V 1.20)
 Win32/HarnigOctober 2006 (V 1.21)
 Win32/PassalertOctober 2006 (V 1.21)
 Win32/TibsOctober 2006 (V 1.21)
 Win32/BrontokNovember 2006 (V 1.22)
 Win32/BeenutDecember 2006 (V 1.23)
 Win32/HaxdoorJanuary 2007 (V 1.24)
 WinNT/HaxdoorJanuary 2007 (V 1.24)
 Win32/StrationFebruary 2007 (V 1.25)
 Win32/MitgliederFebruary 2007 (V 1.25)
 Win32/AlureonMarch 2007 (V 1.26)
 Win32/FunnerApril 2007 (V 1.27)
 Win32/RenosMay 2007 (V 1.28)
 Win32/AllapleJune 2007 (V 1.30)
 Win32/BuskyJuly 2007 (V 1.31)
 Win32/Virut.AAugust 2007 (V 1.32)
 Win32/Virut.BAugust 2007 (V 1.32)
 Win32/ZonebacAugust 2007 (V 1.32)
 Win32/NuwarSeptember 2007 (V 1.33)
 Win32/RJumpOctober 2007 (V 1.34)
 Win32/ConHookNovember 2007 (V 1.35)

**W32/HackDef typically hides other potentially unwanted software on the computer. If the cleaner tool reports that W32/HackDef was detected on the computer, we strongly recommend that you run a scan with up-to-date antivirus and antispyware programs (see http://www.microsoft.com/spyware). If you want to view the software that W32/HackDef was hiding, first open the log file for the cleaner tool (%WINDIR%\debug\mrt.log). Next, in the Scanning Results section, find the line or lines that note the folder in which Win32/Hackdef was found. In that same folder, you should find the Win32/Hackdef configuration file that has the .ini file extension. View this file to determine the software that Win32/HackDef was hiding on the computer.

The Microsoft Windows Malicious Software Removal Tool is available for Windows 2000; Windows Server 2003; Windows Vista; Windows XP.

You can download the Malicious Software Removal Tool manually from the Microsoft Download Center [Eng - 8.2 MB]. Other languages are available from the Microsoft Download Center. A 64-bit version is also available from the Microsoft Download Center.

If you receive an error while running the tool, check Microsoft Knowledge Base Article 891717 for more information.

For more information on this tool read Microsoft Knowledge Base Article 890830.

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Last Updated: November 15, 2007