Expert: Brian Benosky - 8/21/2011

Question
Hi All,
Need help...booting now from floppy pointed to system restore partition.  After AVG found a trojan hiding as svchost.exe, spoolsv.exe ... it needed to reboot to finish, no won't boot from C drive, can;t do an F10 or F8, stops short of splash..am I still infected or did I just quarrenteen a needed file(s)?
WinNT sp3, zone alarm free, avg free

Here is HJT log
Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 8:03:03 PM, on 8/20/2011
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\PROGRA~1\AVG\AVG10\avgchsvx.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\System32\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\ZoneLabs\vsmon.exe
C:\Program Files\CheckPoint\ZAForceField\IswSvc.exe
C:\Program Files\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe
C:\Program Files\AVG\AVG10\avgwdsvc.exe
C:\Program Files\Bonjour\mDNSResponder.exe
C:\Program Files\GNU\GnuPG\dirmngr.exe
C:\WINDOWS\ehome\ehSched.exe
C:\Program Files\Common Files\Intuit\Update Service\IntuitUpdateService.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\WINDOWS\system32\HPZipm12.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\AVG\AVG10\Identity Protection\Agent\Bin\AVGIDSAgent.exe
C:\Program Files\AVG\AVG10\avgnsx.exe
C:\Program Files\AVG\AVG10\avgemcx.exe
C:\Program Files\CheckPoint\ZAForceField\ForceField.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\ehome\ehtray.exe
C:\windows\system\hpsysdrv.exe
C:\WINDOWS\ehome\ehmsas.exe
C:\Program Files\HP\Digital Imaging\Unload\hpqcmon.exe
C:\WINDOWS\System32\hphmon05.exe
C:\HP\KBD\KBD.EXE
C:\WINDOWS\LTMSG.exe
C:\Program Files\Multimedia Card Reader\shwicon2k.exe
C:\WINDOWS\ALCXMNTR.EXE
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\Common Files\Java\Java Update\jusched.exe
C:\Program Files\AVG\AVG10\avgtray.exe
C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
C:\Program Files\Updates from HP\137903\Program\BackWeb-137903.exe
C:\Program Files\AVG\AVG10\Identity Protection\agent\bin\avgidsmonitor.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\PROGRA~1\AVG\AVG10\avgrsx.exe
C:\Program Files\AVG\AVG10\avgcsrvx.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\msiexec.exe
C:\Program Files\HiJackThis\Trend Micro\HiJackThis\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = localhost
R3 - URLSearchHook: ZoneAlarm Security Toolbar - {91da5e8a-3318-4f8c-b67e-5964de3ab546} - C:\Program Files\ZoneAlarm_Security\prxtbZone.dll
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: WormRadar.com IESiteBlocker.NavFilter - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - C:\Program Files\AVG\AVG10\avgssie.dll
O2 - BHO: ZoneAlarm Security Engine Registrar - {8A4A36C2-0535-4D2C-BD3D-496CB7EED6E3} - C:\Program Files\CheckPoint\ZAForceField\TrustChecker\bin\TrustCheckerIEPlugin.dll
O2 - BHO: ZoneAlarm Security - {91da5e8a-3318-4f8c-b67e-5964de3ab546} - C:\Program Files\ZoneAlarm_Security\prxtbZone.dll
O2 - BHO: AVG Security Toolbar BHO - {A3BC75A2-1F87-4686-AA43-5347D756017C} - C:\Program Files\AVG\AVG10\Toolbar\IEToolbar.dll
O2 - BHO: URLRedirectionBHO - {B4F3A835-0E21-4959-BA22-42B3008E02FF} - C:\PROGRA~1\MICROS~2\Office14\URLREDIR.DLL
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Program Files\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O3 - Toolbar: HP View - {B2847E28-5D7D-4DEB-8B67-05D28BCF79F5} - c:\Program Files\HP\Digital Imaging\bin\hpdtlk02.dll
O3 - Toolbar: AVG Security Toolbar - {CCC7A320-B3CA-4199-B1A6-9F516DD69829} - C:\Program Files\AVG\AVG10\Toolbar\IEToolbar.dll
O3 - Toolbar: ZoneAlarm Security Toolbar - {91da5e8a-3318-4f8c-b67e-5964de3ab546} - C:\Program Files\ZoneAlarm_Security\prxtbZone.dll
O3 - Toolbar: ZoneAlarm Security Engine - {EE2AC4E5-B0B0-4EC6-88A9-BCA1A32AB107} - C:\Program Files\CheckPoint\ZAForceField\TrustChecker\bin\TrustCheckerIEPlugin.dll
O4 - HKLM\..\Run: [ehTray] C:\WINDOWS\ehome\ehtray.exe
O4 - HKLM\..\Run: [hpsysdrv] c:\windows\system\hpsysdrv.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\System32\hkcmd.exe
O4 - HKLM\..\Run: [CamMonitor] c:\Program Files\HP\Digital Imaging\Unload\hpqcmon.exe
O4 - HKLM\..\Run: [HPHUPD05] c:\Program Files\HP\{45B6180B-DCAB-4093-8EE8-6164457517F0}\hphupd05.exe
O4 - HKLM\..\Run: [HPHmon05] C:\WINDOWS\System32\hphmon05.exe
O4 - HKLM\..\Run: [KBD] C:\HP\KBD\KBD.EXE
O4 - HKLM\..\Run: [UpdateManager] "C:\Program Files\Common Files\Sonic\Update Manager\sgtray.exe" /r
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [AutoTKit] C:\hp\bin\AUTOTKIT.EXE
O4 - HKLM\..\Run: [Recguard] C:\WINDOWS\SMINST\RECGUARD.EXE
O4 - HKLM\..\Run: [LTMSG] LTMSG.exe 7
O4 - HKLM\..\Run: [PS2] C:\WINDOWS\system32\ps2.exe
O4 - HKLM\..\Run: [Sunkist2k] C:\Program Files\Multimedia Card Reader\shwicon2k.exe
O4 - HKLM\..\Run: [Reminder] "C:\Windows\Creator\Remind_XP.exe"
O4 - HKLM\..\Run: [AlcxMonitor] ALCXMNTR.EXE
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Common Files\Java\Java Update\jusched.exe"
O4 - HKLM\..\Run: [MFARestart] "C:\Documents and Settings\All Users\Application Data\MFAData\pack\avgrunasx.exe" /usereg
O4 - HKLM\..\Run: [AVG_TRAY] C:\Program Files\AVG\AVG10\avgtray.exe
O4 - HKLM\..\Run: [Adobe ARM] "C:\Program Files\Common Files\Adobe\ARM\1.0\AdobeARM.exe"
O4 - HKLM\..\Run: [CanonSolutionMenu] C:\Program Files\Canon\SolutionMenu\CNSLMAIN.exe /logon
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [ZoneAlarm Client] "C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\Run: [ISW] "C:\Program Files\CheckPoint\ZAForceField\ForceField.exe" /icon="hidden"
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - .DEFAULT User Startup: AutoTBar.exe (User 'Default user')
O4 - Global Startup: Adobe Gamma Loader.lnk = ?
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O4 - Global Startup: Updates from HP.lnk = C:\Program Files\Updates from HP\137903\Program\BackWeb-137903.exe
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office14\EXCEL.EXE/3000
O8 - Extra context menu item: Se&nd to OneNote - res://C:\PROGRA~1\MICROS~2\Office14\ONBttnIE.dll/105
O9 - Extra button: Send to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\Program Files\Microsoft Office\Office14\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: Se&nd to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\Program Files\Microsoft Office\Office14\ONBttnIE.dll
O9 - Extra button: OneNote Lin&ked Notes - {789FE86F-6FC4-46A1-9849-EDE0DB0C95CA} - C:\Program Files\Microsoft Office\Office14\ONBttnIELinkedNotes.dll
O9 - Extra 'Tools' menuitem: OneNote Lin&ked Notes - {789FE86F-6FC4-46A1-9849-EDE0DB0C95CA} - C:\Program Files\Microsoft Office\Office14\ONBttnIELinkedNotes.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site
O16 - DPF: {8BC53B30-32E4-4ED3-BEF9-DB761DB77453} (CInstallLPCtrl Object) - http://u3.sandisk.com/download/apps/LPInstaller.CAB
O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} (get_atlcom Class) - http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{EF4E37DC-461D-4404-ABE7-03F52A7DF8D3}: NameServer = 8.8.8.8
O18 - Protocol: avgsecuritytoolbar - {F2DDE6B2-9684-4A55-86D4-E255E237B77C} - C:\Program Files\AVG\AVG10\Toolbar\IEToolbar.dll
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Program Files\AVG\AVG10\avgpp.dll
O18 - Filter hijack: text/xml - {807573E5-5146-11D5-A672-00B0D022E945} - C:\Program Files\Common Files\Microsoft Shared\OFFICE14\MSOXMLMF.DLL
O22 - SharedTaskScheduler: Browseui preloader - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - C:\WINDOWS\System32\browseui.dll
O22 - SharedTaskScheduler: Component Categories cache daemon - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\WINDOWS\System32\browseui.dll
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: AVG Security Toolbar Service - Unknown owner - C:\Program Files\AVG\AVG10\Toolbar\ToolbarBroker.exe
O23 - Service: AVGIDSAgent - AVG Technologies CZ, s.r.o. - C:\Program Files\AVG\AVG10\Identity Protection\Agent\Bin\AVGIDSAgent.exe
O23 - Service: AVG WatchDog (avgwd) - AVG Technologies CZ, s.r.o. - C:\Program Files\AVG\AVG10\avgwdsvc.exe
O23 - Service: Bonjour Service - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: DirMngr - Unknown owner - C:\Program Files\GNU\GnuPG\dirmngr.exe
O23 - Service: Google Update Service (gupdate) (gupdate) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Google Update Service (gupdatem) (gupdatem) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Intuit Update Service (IntuitUpdateService) - Intuit Inc. - C:\Program Files\Common Files\Intuit\Update Service\IntuitUpdateService.exe
O23 - Service: iPod Service - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: ZoneAlarm Toolbar IswSvc (IswSvc) - Check Point Software Technologies - C:\Program Files\CheckPoint\ZAForceField\IswSvc.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Program Files\Java\jre6\bin\jqs.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Check Point Software Technologies LTD - C:\WINDOWS\system32\ZoneLabs\vsmon.exe

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End of file - 10745 bytes

Answer
Hi Nick

It seems that whatever virus you had corrupted important system files.  When AVG removed them, your Windows Master Boot Record (MBR) or your Master File Table (MFT) got screwed up, which is causing the failure to boot.  I have seen this happen before.  Luckily, these can be fixed with a free tool called Parted Magic.  Basically, it is a Linux LiveCD which boots to a desktop of tools.  You can download and burn the .iso file from here:

http://partedmagic.com/doku.php?id=downloads

You will then boot directly to the LiveCd and repair your MBR/MFT with the following instructions:

http://www.proactivepatrol.com/support/index.php?_m=knowledgebase&_a=viewarticle

I recommend burning the LiveCD and printing out the instructions from a different PC, as it may be difficult to do from the affected PC.  
If you have questions or concerns, just let me know.

Brian