Families Cleaned by the Malicious Software Removal Tool

Additions Are Made Each Month to Address the Latest Threats

Published: April 12, 2005 | Updated: July 8, 2008

Run the tool from the Microsoft.com Web site, or download the tool and run it locally on your computer.

The Microsoft Windows Malicious Software Removal Tool removes specific, prevalent malicious software families from computers running compatible versions of Windows. Microsoft releases a new version of the tool on the second Tuesday of every month, and as needed to respond to security incidents.

New Malicious Software

The following malicious software was added this release. Click the name to learn more in our Malicious Software Encyclopedia.

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Horst

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Complete List

Here is a list of every major virus and worm family added since the tool was first released on January 11, 2005.

•	Alcan
•	Alemod
•	Allaple
•	Alureon
•	Antinny
•	Atak
•	Badtrans
•	Bagle
•	Bagz
•	Bancos
•	Banker
•	Beenut
•	Berbew
•	Blaster
•	Bobax
•	Bofra
•	Brontok
•	Bropia
•	Bugbear
•	Busky
•	Captiya
•	Ceekat
•	Chir
•	Codbot
•	Conhook
•	Corripio
•	Cissi
•	Cutwail
•	DoomJuice
•	Dumaru
•	Esbot
•	Evaman
•	Eyeveg
•	F4IRootkit
•	Fizzer
•	Fotomoto
•	Frethog
•	Funner

•	Gael
•	Ganda
•	Gaobot
•	Gibe
•	Goweh
•	Hacker Defender
•	Hacty
•	Harnig
•	Haxdoor
•	Horst
•	Hupigon
•	IRCBot
•	Ispro
•	Jeefo
•	Kelvir
•	Korgo
•	Ldpinch
•	Locksky
•	Lolyda
•	Lovgate
•	Mabutu
•	Magistr
•	Maslan
•	Mimail
•	Mitglieder
•	Mydoom
•	Mytob
•	Mywife
•	Nachi
•	Netsky
•	Newacc
•	Nsag
•	Nuwar
•	Oderoor
•	Opaserv
•	Optix
•	Optixpro

•	Parite
•	Passalert
•	Plexus
•	Purstiu
•	Randex
•	Rbot
•	Reatle
•	Renos
•	Rjump
•	Ryknos
•	Sasser
•	Sdbot
•	Sinowal
•	Sober
•	Sobig
•	Spybot
•	Spyboter
•	Storark
•	Stration
•	Swen
•	Taterf
•	Tibs
•	Tilcun
•	Torvil
•	Valla
•	Virtumonde
•	Virut
•	Vundo
•	Wootbot
•	Wukill
•	Yaha
•	Zafi
•	Zindos
•	Zlob
•	Zonebac
•	Zotob
•	Zuten

New versions of the tool are delivered each month through the Automatic Updates service in the latest versions of Windows. The tool can also be downloaded manually from the Microsoft Download Center and run anytime on the Malicious Software Removal Tool Web page on Microsoft.com.

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