Hola creo que tengo troyanos le he pasado el karspesky y ha encontrado dos infecciones una es Backdoor.Win32.Hupigon.bnca y otra es Trojan.Win32.Agent.cyt aparte va muy lento en ixplorer y me salen muchas ventanas de publicidad les pego el log para su estudio.
gracias

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 0:13:12, on 09/05/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Normal

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:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Common Files\Autodesk Shared\Service\AdskScSrv.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
C:\WINDOWS\system32\drivers\CDAC11BA.EXE
C:\WINDOWS\eHome\ehRecvr.exe
C:\WINDOWS\eHome\ehSched.exe
C:\Program Files\Intel\Intel Matrix Storage Manager\iaantmon.exe
C:\Program Files\Common Files\LightScribe\LSSrvc.exe
C:\Program Files\HP DigitalMedia Archive\DMAScheduler.exe
C:\Program Files\HP\HP Software Update\HPwuSchd2.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\Adobe\Photoshop Album Starter Edition\3.0\Apps\apdproxy.exe
C:\Program Files\QuickTime\qttask.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\Program Files\Java\jre1.5.0_10\bin\jusched.exe
C:\program files\common files\installshield\updateservice\issch.exe
C:\WINDOWS\ehome\RMSvc.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\MessengerPlus! 3\MsgPlus.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\SUPERAntiSpyware\SUPERAntiSpyware.exe
C:\documents and settings\hp_administrator\local settings\application data\mupzatros.exe
C:\Program Files\Intel\IntelDH\Intel(R) Quick Resume Technology\ELService.exe
C:\Program Files\Adobe\Acrobat 6.0\Distillr\acrotray.exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
C:\WINDOWS\ehome\RMSysTry.exe
C:\Program Files\WinZip\WZQKPICK.EXE
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\HP\Digital Imaging\bin\hpqSTE08.exe
C:\WINDOWS\system32\dllhost.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Program Files\Java\jre1.5.0_10\bin\jucheck.exe
C:\Program Files\Pando Networks\Pando\pando.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\Common Files\Microsoft Shared\Windows Live\WLLoginProxy.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iehome&locale=ES_ES&c=63&bd=PAVILION &pf=desktop
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iesearch&locale=ES_ES&c=63&bd=PAVILI ON&pf=desktop
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iehome&locale=ES_ES&c=63&bd=PAVILION &pf=desktop
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iesearch&locale=ES_ES&c=63&bd=PAVILI ON&pf=desktop
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iesearch&locale=ES_ES&c=63&bd=PAVILI ON&pf=desktop
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iehome&locale=ES_ES&c=63&bd=PAVILION &pf=desktop
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page = C:\WINDOWS\pchealth\helpctr\System\panels\blank.ht m
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R3 - URLSearchHook: Barra Yahoo! con bloqueador de ventanas emergentes - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - (no file)
R3 - URLSearchHook: (no name) - {06663B56-0D73-4f9f-BCC5-4AA941470AFD} - C:\Program Files\PandoBar\SrchAstt\1.bin\P4SRCHAS.DLL
O2 - BHO: Pando Search Assistant BHO - {06663B51-0D73-4f9f-BCC5-4AA941470AFD} - C:\Program Files\PandoBar\SrchAstt\1.bin\P4SRCHAS.DLL
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: CInterceptor Object - {38D3FE60-3D53-4F37-BB0E-C7A97A26A156} - C:\Program Files\Pando Networks\Pando\PandoIEPlugin.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: Windows Live Aplicación auxiliar de inicio de sesión - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar4.dll
O2 - BHO: AcroIEToolbarHelper Class - {AE7CD045-E861-484f-8273-0445EE161910} - C:\Program Files\Adobe\Acrobat 6.0\Acrobat\AcroIEFavClient.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\2.0.301.7164\sw g.dll
O2 - BHO: Windows Live Toolbar Helper - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\Windows Live Toolbar\msntb.dll
O2 - BHO: Pando Toolbar BHO - {E3EA4FD1-CADE-4ae5-84F7-086EEE888BE4} - C:\Program Files\PandoBar\bar\2.bin\PANDOBAR.DLL
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar4.dll
O3 - Toolbar: Windows Live Toolbar - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\Windows Live Toolbar\msntb.dll
O3 - Toolbar: PDF de Adobe - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Program Files\Adobe\Acrobat 6.0\Acrobat\AcroIEFavClient.dll
O3 - Toolbar: Pando Toolbar - {E3EA4FD9-CADE-4ae5-84F7-086EEE888BE4} - C:\Program Files\PandoBar\bar\2.bin\PANDOBAR.DLL
O3 - Toolbar: Veoh Browser Plug-in - {D0943516-5076-4020-A3B5-AEFAF26AB263} - C:\Program Files\Veoh Networks\Veoh\Plugins\reg\VeohToolbar.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [DMAScheduler] "c:\Program Files\HP DigitalMedia Archive\DMAScheduler.exe"
O4 - HKLM\..\Run: [Recguard] C:\WINDOWS\SMINST\RECGUARD.EXE
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\HP\HP Software Update\HPwuSchd2.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [Adobe Photo Downloader] "C:\Program Files\Adobe\Photoshop Album Starter Edition\3.0\Apps\apdproxy.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [PinnacleDriverCheck] C:\WINDOWS\system32\PSDrvCheck.exe -CheckReg
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.5.0_10\bin\jusched.exe"
O4 - HKLM\..\Run: [ISUSPM Startup] C:\PROGRA~1\COMMON~1\INSTAL~1\UPDATE~1\ISUSPM.exe -startup
O4 - HKLM\..\Run: [ISUSScheduler] "c:\program files\common files\installshield\updateservice\issch.exe" -start
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [MessengerPlus3] "C:\Program Files\MessengerPlus! 3\MsgPlus.exe"
O4 - HKLM\..\Run: [!AVG Anti-Spyware] "C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe" /minimized
O4 - HKCU\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNo tifier.exe
O4 - HKCU\..\Run: [SUPERAntiSpyware] C:\Program Files\SUPERAntiSpyware\SUPERAntiSpyware.exe
O4 - HKCU\..\Run: [mupzatros] c:\documents and settings\hp_administrator\local settings\application data\mupzatros.exe mupzatros
O4 - .DEFAULT User Startup: Pin.lnk = C:\hp\bin\CLOAKER.EXE (User 'Default user')
O4 - Global Startup: Acrobat Assistant.lnk = C:\Program Files\Adobe\Acrobat 6.0\Distillr\acrotray.exe
O4 - Global Startup: Adobe Gamma Loader.lnk = C:\Program Files\Common Files\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O4 - Global Startup: Inicio rápido de Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: microsoft office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O4 - Global Startup: Monitor de recursos de Extender.lnk = C:\WINDOWS\ehome\RMSysTry.exe
O4 - Global Startup: winzip quick pick.lnk = C:\Program Files\WinZip\WZQKPICK.EXE
O8 - Extra context menu item: &Windows Live Search - res://C:\Program Files\Windows Live Toolbar\msntb.dll/search.htm
O8 - Extra context menu item: Abrir en nueva ficha de fondo - res://C:\Program Files\Windows Live Toolbar\Components\es-es\msntabres.dll.mui/229?db3d55d339d54cf88bb41b39a93b2b18
O8 - Extra context menu item: Abrir en nueva ficha en primer plano - res://C:\Program Files\Windows Live Toolbar\Components\es-es\msntabres.dll.mui/230?db3d55d339d54cf88bb41b39a93b2b18
O8 - Extra context menu item: Add to Windows &Live Favorites - http://favorites.live.com/quickadd.aspx
O8 - Extra context menu item: Download all links using BitComet - res://C:\Program Files\BitComet\BitComet.exe/AddAllLink.htm
O8 - Extra context menu item: Download link using &BitComet - res://C:\Program Files\BitComet\BitComet.exe/AddLink.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Consola de Sun Java - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O9 - Extra button: Ayuda para la conexión - {E2D4D26B-0180-43a4-B05F-462D6D54C789} - C:\WINDOWS\system32\shdocvw.dll
O9 - Extra 'Tools' menuitem: Ayuda para la conexión - {E2D4D26B-0180-43a4-B05F-462D6D54C789} - C:\WINDOWS\system32\shdocvw.dll
O16 - DPF: {0EB0E74A-2A76-4AB3-A7FB-9BD8C29F7F75} (CKAVWebScan Object) - http://www.kaspersky.com/kos/spanish//kavwebscan_unicode.cab
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {193C772A-87BE-4B19-A7BB-445B226FE9A1} (ewidoOnlineScan Control) - http://download.ewido.net/ewidoOnlineScan.cab
O16 - DPF: {2D8ED06D-3C30-438B-96AE-4D110FDC1FB8} (ActiveScan 2.0 Installer Class) - http://acs.pandasoftware.com/activescan/cabs/as2stubie.cab
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://gfx2.hotmail.com/mail/w2/resources/MSNPUpld.cab
O16 - DPF: {56762DEC-6B0D-4AB4-A8AD-989993B5D08B} (OnlineScanner Control) - http://www.eset.eu/buxus/docs/OnlineScanner.cab
O16 - DPF: {7FC1B346-83E6-4774-8D20-1A6B09B0E737} (Windows Live Photo Upload Control) - http://albitagitanitaalba.spaces.live.com/PhotoUpload/MsnPUpld.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsClient.cab31267.cab
O16 - DPF: {B785FA3C-1DE9-4D20-8396-613C486FE95E} (AeatCtl Class) - https://www5.aeat.es/ES13/D/cactivex.cab
O16 - DPF: {F58E1CEF-A068-4C15-BA5E-587CAF3EE8C6} (MSN Chat Control 4.5) - http://www.xdchat.net/bin/msnchat45.cab
O20 - Winlogon Notify: !SASWinLogon - C:\Program Files\SUPERAntiSpyware\SASWINLO.dll
O23 - Service: Ares Chatroom server (AresChatServer) - Ares Development Group - C:\Program Files\Ares\chatServer.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Autodesk Licensing Service - Autodesk - C:\Program Files\Common Files\Autodesk Shared\Service\AdskScSrv.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: AVG Anti-Spyware Guard - GRISOFT s.r.o. - C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
O23 - Service: C-DillaCdaC11BA - Macrovision - C:\WINDOWS\system32\drivers\CDAC11BA.EXE
O23 - Service: Intel® Quick Resume Technology Drivers (ELService) - Intel Corporation - C:\Program Files\Intel\IntelDH\Intel(R) Quick Resume Technology\ELService.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Intel(R) Matrix Storage Event Monitor (IAANTMon) - Intel Corporation - C:\Program Files\Intel\Intel Matrix Storage Manager\iaantmon.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Hewlett-Packard Company - C:\Program Files\Common Files\LightScribe\LSSrvc.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe
O23 - Service: Symantec Core LC - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe

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End of file - 13531 bytes

sigo igual, por favor necesito ayuda, estoy deseperado