Estuve teniendo problemas con mi pc, dos virus ingresaron y pude eliminar casi todo, los dos virus fueron el virus Worm.Win32.VB.el y el virus Email-Worm.Win32.Brontok.q (que fue el que más me causó problemas), ahora estoy intentando eliminar y restaurar lo que resta pero parece que tengo otros problemas con el archivo hosts

y con este archivo que no sé que es: wsctf.exe, alguien me puede ayudar? acá les dejo el logfile de hijackthis, también analice la pc con kaspersky y panda antivirus online
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 10:23:04 p.m., on 02/02/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Safe mode
Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\Archivos de programa\Microsoft AntiSpyware\gcasDtServ.exe
C:\Archivos de programa\Kaspersky Lab\Kaspersky Anti-Virus 7.0\avp.exe
C:\Archivos de programa\Trend Micro\HijackThis\HijackThis.exe
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar =
http://g.msn.es/0SEESES/SAOS01R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Vínculos
F2 - REG:system.ini: UserInit=userinit.exe,EXPLORER.EXE
O1 - Hosts: <html>
O1 - Hosts: <head>
O1 - Hosts: <title>Welcome to Yahoo! GeoCities - Your Home on the Web ®</title>
O1 - Hosts: </head>
O1 - Hosts: <body bgcolor=#ffffff>
O1 - Hosts: <!-- following code added by server. PLEASE REMOVE -->
O1 - Hosts: <!-- preceding code added by server. PLEASE REMOVE --><center>
O1 - Hosts: <table border=0 width=600 cellspacing=0 cellpadding=0><tr><td width="1%"><a rel="nofollow" href="http://geocities.yahoo.com/"><img
O1 - Hosts: src=http://us.i1.yimg.com/us.yimg.com/i/us/geo/ygeo.gif width=305 height=36 border=0 alt="Yahoo! GeoCities"></a></td><td><table border=0 cellspacing=0 cellpadding=0 width="100%"><tr><td align=right valign=bottom nowrap><font face=arial size=-1><a rel="nofollow" href="http://www.yahoo.com">Yahoo!</a>
O1 - Hosts: - <a rel="nofollow" href="http://help.yahoo.com/help/us/geo/">Help</a>
O1 - Hosts: </font>
O1 - Hosts: </td></tr></table><hr size=1></td></tr></table>
O1 - Hosts: <br>
O1 - Hosts: <table width=600 cellpadding=4 cellspacing=0 border=0>
O1 - Hosts: <tr bgcolor=003399><td><font face=arial size=+1 color=ffffff><b>Sorry, the site you requested is inactive.</b></font></td>
O1 - Hosts: </tr>
O1 - Hosts: </table>
O1 - Hosts: <br>
O1 - Hosts: <table width="600" border="0" cellspacing="0" cellpadding="0"><tr><td align=center valign=top>
O1 - Hosts: <table width="100%" cellpadding=1 cellspacing=0 border=0 bgcolor=dcdcdc><tr><td valign=top>
O1 - Hosts: <table width="100%" cellpadding=4 cellspacing=0 border=0 bgcolor=ffffee><tr><td valign=top>
O1 - Hosts: <font face=arial size=-1>
O1 - Hosts: This GeoCities site has been deactivated due to inactivity.
O1 - Hosts: <p>
O1 - Hosts: <strong>Are you the site owner?</strong> <br>
O1 - Hosts: <a rel="nofollow" href="http://geocities.yahoo.com/v/activate.html">Click here</a> to reactivate your site.
O1 - Hosts: <p>
O1 - Hosts: <strong>Are you a visitor?</strong> Try a search below.
O1 - Hosts: </font>
O1 - Hosts: <br><br>
O1 - Hosts: </td></tr></table></td></tr></table>
O1 - Hosts: </td></tr></table>
O1 - Hosts: <br>
O1 - Hosts: <table width="600" cellpadding=4 cellspacing=0 border=0 bgcolor=eeeeee><tr><td valign=top>
O1 - Hosts: <font face=arial size=-1><b>Search Yahoo! GeoCities</b></font></td></tr></table>
O1 - Hosts: <br><form action="http://geocities.yahoo.com/search" method=get>
O1 - Hosts: <input size=32 name=p value=""> <input type=submit value="Search"><p>
O1 - Hosts: <p>
O1 - Hosts: <strong><font face=arial size=-1>Advanced GeoCities search options </font></strong>
O1 - Hosts: <p>
O1 - Hosts: <table border=0 cellpadding=2 cellspacing=0>
O1 - Hosts: <tr><td valign=top>
O1 - Hosts: <table border=0 cellpadding=1 cellspacing=0>
O1 - Hosts: <tr><td colspan=2><font face=arial size=-1><b>Option 1</b></font></td></tr>
O1 - Hosts: <tr><td witdth=1% valign=top> <input type=radio name=o value=i checked></td><td><font face=arial size=-1>Intelligent default</font></td></tr>
O1 - Hosts: <tr><td witdth=1% valign=top> <input type=radio name=o value=p></td><td><font face=arial size=-1>An exact phrase match</font></td></tr>
O1 - Hosts: <tr><td witdth=1% valign=top> <input type=radio name=o value=a></td><td><font face=arial size=-1>Matches on all words (AND)</font></td></tr>
O1 - Hosts: <tr><td witdth=1% valign=top> <input type=radio name=o value=o></td><td><font face=arial size=-1>Matches on any word (OR)</font></td></tr></table>
O1 - Hosts: </td><td> </td><td valign=top>
O1 - Hosts: <table border=0 cellpadding=1 cellspacing=0>
O1 - Hosts: <tr><td colspan=2><font face=arial size=-1><b>Option 2</b></font></td></tr>
O1 - Hosts: <tr><td witdth=1% valign=top> <input type=radio name=h value=c ></td><td><font face=arial size=-1>Yahoo! GeoCities Categories</font></td></tr>
O1 - Hosts: <tr><td witdth=1% valign=top> <input type=radio name=h value=s checked></td><td><font face=arial size=-1>Yahoo! GeoCities Web Sites</font></td></tr></table>
O1 - Hosts: </td></tr></table>
O1 - Hosts: </form>
O1 - Hosts: <p>
O1 - Hosts: <br>
O1 - Hosts: <table cellpadding=0 cellspacing=0 border=0 width=675><tr><td bgcolor=a0b8c8>
O1 - Hosts: <table cellpadding=1 cellspacing=1 border=0 width="100%">
O1 - Hosts: <tr valign=top bgcolor=ffffff><td align=center>
O1 - Hosts: <font face=arial size=-2><A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://address.yahoo.com/">Address Book</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://alerts.yahoo.com/">Alerts</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://auctions.yahoo.com/">Auctions</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://billpay.yahoo.com/">Bill Pay</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://bookmarks.yahoo.com/">Bookmarks</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://briefcase.yahoo.com/">Briefcase</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://broadcast.yahoo.com/">Broadcast</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://calendar.yahoo.com/">Calendar</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://chat.yahoo.com/">Chat</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://classifieds.yahoo.com/">Classifieds</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://clubs.yahoo.com/">Clubs</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://companion.yahoo.com/">Companion</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://experts.yahoo.com/">Experts</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://games.yahoo.com/">Games</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://greetings.yahoo.com/">Greetings</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://geocities.yahoo.com/">Home Pages</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://invites.yahoo.com/">Invites</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://mail.yahoo.com/">Mail</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://maps.yahoo.com/">Maps</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://members.yahoo.com/">Member Directory</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://messenger.yahoo.com/">Messenger</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://my.yahoo.com/">My Yahoo!</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://news.yahoo.com/">News</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://paydirect.yahoo.com/">PayDirect</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://people.yahoo.com/">People Search</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://personals.yahoo.com/">Personals</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://photos.yahoo.com/">Photos</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://shopping.yahoo.com/">Shopping</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://sports.yahoo.com/">Sports</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://finance.yahoo.com/">Stock Quotes</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://tv.yahoo.com/">TV</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://travel.yahoo.com/">Travel</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://weather.yahoo.com/">Weather</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://www.yahooligans.com/">Yahooligans</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://yp.yahoo.com/">Yellow Pages</A> · <A
O1 - Hosts: rel="nofollow" href="http://rd.yahoo.com/footer/?http://docs.yahoo.com/docs/family/more.html">more...</A>
O1 - Hosts: </font></td></tr></table></td></tr></table>
O1 - Hosts: <p><center><hr noshade size=1 width="675"><table border=0 cellpadding=0 cellspacing=0><tr><td align=center valign=bottom width="100%"><font size="-2" face=arial>Copyright © 2004 <a rel="nofollow" href="http://www.yahoo.com" target="_top">Yahoo! Inc.</a> All rights reserved.<br><b>NOTICE: We collect personal information on this site. To learn more about how we use your information, see our <a rel="nofollow" href="http://privacy.yahoo.com/privacy/us/" target="_top">Yahoo Privacy Policy</a></b></font></td></tr></table></center>
O1 - Hosts: </body>
O1 - Hosts: </html>
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Archivos de programa\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: IeCatch5 Class - {2F364306-AA45-47B5-9F9D-39A8B94E7EF7} - C:\ARCHIV~1\FlashGet\jccatch.dll
O2 - BHO: Yahoo! IE Services Button - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Archivos de programa\Yahoo!\Common\yiesrvcAR.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Archivos de programa\Java\jre1.6.0_03\bin\ssv.dll
O2 - BHO: Easy Gif Animator Toolbar Helper - {96372AB6-15EB-4316-B497-71C741BC548C} - C:\Archivos de programa\Easy Gif Animator Extension\v3.3.0.0\EasyGifAnimator_Toolbar.dll (file missing)
O3 - Toolbar: FlashGet Bar - {E0E899AB-F487-11D5-8D29-0050BA6940E3} - C:\ARCHIV~1\FlashGet\fgiebar.dll
O3 - Toolbar: MSN - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Archivos de programa\MSN Apps\MSN Toolbar\01.02.5000.1021\es\msntb.dll
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Archivos de programa\Java\jre1.6.0_03\bin\jusched.exe"
O4 - HKLM\..\Run: [AVP] "C:\Archivos de programa\Kaspersky Lab\Kaspersky Anti-Virus 7.0\avp.exe"
O4 - HKCU\..\Run: [ares] "C:\Archivos de programa\Ares\Ares.exe" -h
O4 - HKCU\..\Run: [wsctf.exe] wsctf.exe
O4 - HKCU\..\Run: [EXPLORER.EXE] EXPLORER.EXE
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Servicio de red')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - Startup: Girder3.lnk = C:\IR-Master\IR-Master.exe
O7 - HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System, DisableRegedit=1
O8 - Extra context menu item: Descargar con Fl&ashGet - C:\Archivos de programa\FlashGet\jc_link.htm
O8 - Extra context menu item: Descargar todo con Flas&hGet - C:\Archivos de programa\FlashGet\jc_all.htm
O8 - Extra context menu item: E&xportar a Microsoft Excel - res://C:\ARCHIV~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Archivos de programa\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Consola de Sun Java - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Archivos de programa\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra button: Web Anti-Virus statistics - {1F460357-8A94-4D71-9CA3-AA4ACF32ED8E} - C:\Archivos de programa\Kaspersky Lab\Kaspersky Anti-Virus 7.0\SCIEPlgn.dll
O9 - Extra button: Yahoo! Servicios - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Archivos de programa\Yahoo!\Common\yiesrvcAR.dll
O9 - Extra button: Referencia - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\ARCHIV~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\ARCHIV~1\FlashGet\flashget.exe
O9 - Extra 'Tools' menuitem: &FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\ARCHIV~1\FlashGet\flashget.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Archivos de programa\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Archivos de programa\Messenger\msmsgs.exe
O16 - DPF: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) -
http://security.symantec.com/sscv6/SharedC...bin/AvSniff.cabO16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Archivos de programa\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) -
http://security.symantec.com/sscv6/SharedC...n/bin/cabsa.cabO16 - DPF: {67A5F8DC-1A4B-4D66-9F24-A704AD929EEE} (System Requirements Lab) -
http://www.nvidia.com/content/DriverDownlo.../sysreqlab2.cabO16 - DPF: {8714912E-380D-11D5-B8AA-00D0B78F3D48} (Yahoo! Webcam Upload Wrapper) -
http://chat.yahoo.com/cab/yuplapp.cabO16 - DPF: {FD0B6769-6490-4A91-AA0A-B5AE0DC75AC9} (Performance Viewer Activex Control) -
https://secure.logmein.com/activex/ractrl.cab?lmi=100O20 - Winlogon Notify: rpcc - C:\WINDOWS\system32\rpcc.dll (file missing)
O20 - Winlogon Notify: winsys32 - C:\WINDOWS\system32\winsys32.dll (file missing)
O20 - Winlogon Notify: winwea32 - winwea32.dll (file missing)
O23 - Service: Ares Chatroom server (AresChatServer) - Ares Development Group - C:\Archivos de programa\Ares\chatServer.exe
O23 - Service: Kaspersky Anti-Virus 7.0 (AVP) - Kaspersky Lab - C:\Archivos de programa\Kaspersky Lab\Kaspersky Anti-Virus 7.0\avp.exe
O23 - Service: Macromedia Licensing Service - Unknown owner - C:\Archivos de programa\Archivos comunes\Macromedia Shared\Service\Macromedia Licensing.exe
O23 - Service: Cyberlink RichVideo Service(CRVS) (RichVideo) - Unknown owner - C:\Archivos de programa\CyberLink\Shared Files\RichVideo.exe
O23 - Service: STI Simulator - Unknown owner - C:\WINDOWS\System32\PAStiSvc.exe
--
End of file - 14284 bytes