Infected with the Conficker / Downadup worm?

Conficker removal tool from Microsoft is available here.

 

 

This tool can remove the following malware:

 

Win32/Berbew (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Berbew)
January 2005 (V 1.0)
Low

Win32/Doomjuice (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Doomjuice)
January 2005 (V 1.0)
Low

Win32/Gaobot (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Gaobot)
January 2005 (V 1.0)
Moderate

Win32/MSBlast (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/MSBlast)
January 2005 (V 1.0)
Low

Win32/Mydoom (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Mydoom)
January 2005 (V 1.0)
Low

Win32/Nachi (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Nachi)
January 2005 (V 1.0)
Low

Win32/Sasser (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Sasser)
January 2005 (V 1.0)
Low

Win32/Zindos (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Zindos)
January 2005 (V 1.0)
Low

Win32/Korgo (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Korgo)
February 2005 (V 1.1)
Low

Win32/Netsky (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Netsky)
February 2005 (V 1.1)
Moderate

Win32/Randex (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Randex)
February 2005 (V 1.1)
Low

Win32/Zafi (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Zafi)
February 2005 (V 1.1)
Low

Win32/Bagle (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Bagle)
March 2005 (V 1.2)
Moderate

Win32/Bropia (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Bropia)
March 2005 (V 1.2)
Low

Win32/Goweh (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Goweh)
March 2005 (V 1.2)
Low

Win32/Sober (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Sober)
March 2005 (V 1.2)
Moderate

Win32/Sobig (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Sobig)
March 2005 (V 1.2)
Low

Win32/Hackdef** (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/hackdef)
April 2005 (V 1.3)
Moderate

Win32/Mimail (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/Mimail)
April 2005 (V 1.3)
Low

Win32/Rbot (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/Rbot)
April 2005 (V 1.3)
Moderate

Win32/Sdbot (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/Sdbot)
May 2005 (V 1.4)
Moderate

WinNT/Ispro (http://www.microsoft.com/security/encyclopedia/details.aspx?name=WinNT/Ispro)
May 2005 (V 1.4)
Low

WinNT/FURootkit (http://www.microsoft.com/security/encyclopedia/details.aspx?name=WinNT/FURootkit)
May 2005 (V 1.4)
Moderate

Win32/Kelvir (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/Kelvir)
June 2005 (V 1.5)
Low

Win32/Lovgate (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/Lovgate)
June 2005 (V 1.5)
Low

Win32/Mytob (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/Mytob)
June 2005 (V 1.5)
Low

Win32/Spybot (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/Spybot)
June 2005 (V 1.5)
Moderate

Win32/Hacty (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/Hacty)
July 2005 (V 1.6)
Low

Win32/Optix (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/Optix)
July 2005 (V 1.6)
Low

Win32/Optixpro (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/Optixpro)
July 2005 (V 1.6)
Low

Win32/Purstiu (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/Purstiu)
July 2005 (V 1.6)
Low

Win32/Wootbot (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/Wootbot)
July 2005 (V 1.6)
Low

Win32/Bagz (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/Bagz)
August 2005 (V 1.7)
Low

Win32/Dumaru (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/Dumaru)
August 2005 (V 1.7)
Low

Win32/Spyboter (http://www.microsoft.com/security/encyclopedia/details.aspx?name=win32/Spyboter)
August 2005 (V 1.7)
Low

Win32/Zotob.A (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Worm:Win32/Zotob.A)
August 2005 A (V 1.7.1)
Low

Win32/Zotob.B (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Worm:Win32/Zotob.B)
August 2005 A (V 1.7.1)
Low

Win32/Zotob.C (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Worm:Win32/Zotob.C)
August 2005 A (V 1.7.1)
Low

Win32/Zotob.D (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Worm:Win32/Zotob.D)
August 2005 A (V 1.7.1)
Low

Win32/Zotob.E (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Worm:Win32/Zotob.E)
August 2005 A (V 1.7.1)
Low

Win32/Bobax.O (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Bobax.O@mm)
August 2005 A (V 1.7.1)
Moderate

Win32/Esbot.A (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Worm:Win32/Esbot.A)
August 2005 A (V 1.7.1)
Low

Win32/Rbot.MA (http://www.microsoft.com/security/encyclopedia/details.aspx?name=backdoor:Win32/Rbot.MA)
August 2005 A (V 1.7.1)
Low

Win32/Rbot.MB (http://www.microsoft.com/security/encyclopedia/details.aspx?name=backdoor:Win32/Rbot.MB)
August 2005 A (V 1.7.1)
Low

Win32/Rbot.MC (http://www.microsoft.com/security/encyclopedia/details.aspx?name=backdoor:Win32/Rbot.MC)
August 2005 A (V 1.7.1)
Low

Win32/Bobax (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Bobax)
September 2005 (V 1.8)
Moderate

Win32/Esbot (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Esbot)
September 2005 (V 1.8)
Low

Win32/Gael (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Gael)
September 2005 (V 1.8)
Moderate

Win32/Yaha (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Yaha)
September 2005 (V 1.8)
Low

Win32/Zotob (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Zotob)
September 2005 (V 1.8)
Low

Win32/Antinny (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Antinny)
October 2005 (V 1.9)
Moderate

Win32/Gibe (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Gibe)
October 2005 (V 1.9)
Low

Win32/Mywife (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Mywife)
October 2005 (V 1.9)
Low

Win32/Wukill (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Wukill)
October 2005 (V 1.9)
Moderate

Win32/Bugbear (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Bugbear)
November 2005 (V 1.10)
Low

Win32/Codbot (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Codbot)
November 2005 (V 1.10)
Low

Win32/Mabutu (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Mabutu)
November 2005 (V 1.10)
Low

Win32/Opaserv (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Opaserv)
November 2005 (V 1.10)
Low

Win32/Swen (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Swen)
November 2005 (V 1.10)
Low

Win32/IRCBot (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/IRCBot)
December 2005 (V 1.11)
Moderate

Win32/Ryknos (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Ryknos)
December 2005 (V 1.11)
Low

WinNT/F4IRootkit (http://www.microsoft.com/security/encyclopedia/details.aspx?name=WinNT/F4IRootkit)
December 2005 (V 1.11)
Moderate

Win32/Bofra (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Bofra)
January 2006 (V 1.12)
Low

Win32/Maslan (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Maslan)
January 2006 (V 1.12)
Low

Win32/Parite (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Parite)
January 2006 (V 1.12)
Moderate

Win32/Alcan (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Alcan)
February 2006 (V 1.13)
Moderate

Win32/Badtrans (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Badtrans)
February 2006 (V 1.13)
Low

Win32/Eyeveg (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Eyeveg)
February 2006 (V 1.13)
Low

Win32/Magistr (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Magistr)
February 2006 (V 1.13)
Low

Win32/Atak (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Atak)
March 2006 (V 1.14)
Low

Win32/Torvil (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Torvil)
March 2006 (V 1.14)
Low

Win32/Zlob (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Zlob)
March 2006 (V 1.14)
Moderate

Win32/Locksky (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Locksky)
April 2006 (V 1.15)
Moderate

Win32/Reatle (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Reatle)
April 2006 (V 1.15)
Low

Win32/Valla (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Valla)
April 2006 (V 1.15)
Low

Win32/Evaman (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Evaman)
May 2006 (V 1.16)
Low

Win32/Ganda (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Ganda)
May 2006 (V 1.16)
Low

Win32/Plexus (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Plexus)
May 2006 (V 1.16)
Low

Win32/Cissi (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Cissi)
June 2006 (V 1.17)
Low

Win32/Fizzer (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Fizzer)
June 2006 (V 1.17)
Low

Win32/Alemod (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Alemod)
July 2006 (V 1.18)
Moderate

Win32/Chir (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Chir)
July 2006 (V 1.18)
Moderate

Win32/Hupigon (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Hupigon)
July 2006 (V 1.18)
Moderate

Win32/Nsag (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Nsag)
July 2006 (V 1.18)
Low

Win32/Banker (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Banker)
August 2006 (V 1.19)
Moderate

Win32/Jeefo (http://www.microsoft.com/security/encyclopedia/details.aspx?name=Win32/Jeefo)
August 2006 (V 1.19)
Moderate

Win32/Bancos (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Bancos)
September 2006 (V 1.20)
Moderate

Win32/Sinowal (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Sinowal)
September 2006 (V 1.20)
Moderate

Win32/Harnig (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Harnig)
October 2006 (V 1.21)
Low

Win32/Passalert (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Passalert)
October 2006 (V 1.21)
Low

Win32/Tibs (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Tibs)
October 2006 (V 1.21)
Moderate

Win32/Brontok (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Brontok)
November 2006 (V 1.22)
Moderate

Win32/Beenut (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Beenut)
December 2006 (V 1.23)
Low

Win32/Haxdoor (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Haxdoor)
January 2007 (V 1.24)
Moderate

WinNT/Haxdoor (http://go.microsoft.com/fwlink/?linkid=37020&name=WinNT/Haxdoor)
January 2007 (V 1.24)
Moderate

Win32/Stration (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Stration)
February 2007 (V 1.25)
Moderate

Win32/Mitglieder (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Mitglieder)
February 2007 (V 1.25)
Low

Win32/Alureon (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Alureon)
March 2007 (V 1.27)
Moderate

Win32/Funner (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Funner)
April 2007 (V 1.28)
Low

Win32/Renos (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Renos)
May 2007 (V 1.29)
Moderate

Win32/Allaple (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Allaple)
June 2007 (V 1.30)
Moderate

Win32/Busky (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Busky)
July 2007 (V 1.31)
Moderate

Win32/Virut.A (http://go.microsoft.com/fwlink/?linkid=37020&name=Virus:Win32/Virut.A)
August 2007 (V 1.32)
Moderate

Win32/Virut.B (http://go.microsoft.com/fwlink/?linkid=37020&name=Virus:Win32/Virut.B)
August 2007 (V 1.32)
Moderate

Win32/Zonebac (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Zonebac)
August 2007 (V 1.32)
Moderate

Win32/Nuwar (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Nuwar)
September 2007 (V 1.33)
Moderate

Win32/RJump (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/RJump)
October 2007 (V 1.34)
Moderate

Win32/ConHook (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/ConHook)
November 2007 (V 1.35)
Moderate

Win32/Fotomoto (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Fotomoto)
December 2007 (V 1.36)
Moderate

Win32/Cutwail (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Cutwail)
January 2008 (V 1.37)
Moderate

Win32/Ldpinch (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Ldpinch)
February 2008 (V 1.38)
Moderate

Win32/Virtumonde (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Virtumonde)
March 2008 (V 1.39)
Moderate

Win32/Vundo (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Vundo)
March 2008 (V 1.39)
Moderate

Win32/Newacc (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Newacc)
March 2008 (V 1.39)
Moderate

Win32/Oderoor (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Oderoor)
May 2008 (V 1.41)
Moderate

Win32/Captiya (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Captiya)
May 2008 (V 1.41)
Moderate

Win32/Corripio (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Corripio)
June 2008 (V 1.42)
Moderate

Win32/Frethog (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Frethog)
June 2008 (V 1.42)
Moderate

Win32/Taterf (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Taterf)
June 2008 (V 1.42)
Moderate

Win32/Storark (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Storark)
June 2008 (V 1.42)
Moderate

Win32/Tilcun (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Tilcun)
June 2008 (V 1.42)
Moderate

Win32/Zuten (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Zuten)
June 2008 (V 1.42)
Moderate

Win32/Ceekat (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Ceekat)
June 2008 (V 1.42)
Moderate

Win32/Lolyda (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Lolyda)
June 2008 (V 1.42)
Moderate

Win32/Horst (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Horst)
July 2008 (V 2.0)
Moderate

Win32/Matcash (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Matcash)
August 2008 (V 2.1)
Moderate

Win32/Slenfbot (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Slenfbot)
September 2008 (V 2.2)
Moderate

Win32/Rustock (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Rustock)
October 2008 (V 2.3)
Moderate

Win32/FakeSecSen (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/FakeSecSen)
November 2008 (V 2.4 )
Moderate

Win32/Gimmiv (http://go.microsoft.com/fwlink/?linkid=37020&name=Win32/Gimmiv)
November 2008 (V 2.4)
Moderate

Win32/FakeXPA (http://www.microsoft.com/security/portal/Entry.aspx?name=Win32%2fFakeXPA)
December 2008 (V 2.5)
Moderate

Win32/Yektel (http://www.microsoft.com/security/portal/Entry.aspx?name=Win32%2fYektel)
December 2008 (V 2.5)
Moderate

Win32/Banload (http://www.microsoft.com/security/portal/Entry.aspx?Name=Win32%2fBanload)
January 2009 (V 2.6)
Moderate

Win32/Conficker (http://www.microsoft.com/security/portal/Entry.aspx?Name=Win32%2fConficker)
January 2009 (V 2.6)
High

Win32/Srizbi (http://www.microsoft.com/security/portal/Entry.aspx?Name=Win32%2fSrizbi)
February 2009 (V 2.7 )
Moderate