Fraud.XPAntivirus

[johnny_dot_exe]

Just started having this garbage show up last night. I can't find any program folders or associated processes. The only info I've found about this virus is what spybot has shown me. Below is a screenshot of the spybot results(after fixing selected problems), take note of the one that isn't fixable. Reboot/scan and safemode scan won't even fix it. All the results re-appear eventually. My internet bandwidth is getting used up by some unknown source, my firefox pages sometimes show up with "warning!" banners...hopefully this can be fixed without a reformat.

I do run teatimer, I have no registry or system restore backups unfortunately. I run spybot, ad-aware(didn't find anything), and bitdefender(keeps crashing for some reason).

SpyBot result screenshot-


HJT log-
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 5:32:22 PM, on 5/14/2009
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP3 (6.00.2900.5512)
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:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\system32\HPZipm12.exe
C:\WINDOWS\system32\PnkBstrA.exe
C:\Program Files\Common Files\Softwin\BitDefender Communicator\xcommsvr.exe
C:\Program Files\Common Files\Softwin\BitDefender Scan Server\bdss.exe
C:\Program Files\Common Files\Softwin\BitDefender Update Service\livesrv.exe
C:\Program Files\Softwin\BitDefender10\vsserv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Alltel\QuickLink Mobile\QuickLink Mobile.exe
C:\Program Files\Common Files\Research In Motion\USB Drivers\BbDevMgr.exe
C:\Program Files\Winamp\winamp.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = about:blank
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O2 - BHO: (no name) - {6be51ef0-2f9f-4040-8603-0c5563bc2b84} - C:\WINDOWS\system32\yeweduwo.dll (file missing)
O2 - BHO: FlashFXP Helper for Internet Explorer - {E5A1691B-D188-4419-AD02-90002030B8EE} - C:\PROGRA~1\FlashFXP\IEFlash.dll
O4 - HKLM\..\Run: [RivaTunerStartupDaemon] "C:\Program Files\RivaTuner v2.22\RivaTuner.exe" /S
O4 - HKLM\..\RunOnce: [SpybotDeletingA7784] command.com /c del "C:\WINDOWS\system32\ovfsthhgmugiomxvhxjlhwhovurtegfmvyxbrr.dll"
O4 - HKLM\..\RunOnce: [SpybotDeletingC2930] cmd.exe /c del "C:\WINDOWS\system32\ovfsthhgmugiomxvhxjlhwhovurtegfmvyxbrr.dll"
O4 - HKLM\..\RunOnce: [SpybotDeletingA4159] command.com /c del "C:\WINDOWS\system32\ovfsthqwxkoqoruxkjyvmfximvvaanuydoomhm.dll_old"
O4 - HKLM\..\RunOnce: [SpybotDeletingC2791] cmd.exe /c del "C:\WINDOWS\system32\ovfsthqwxkoqoruxkjyvmfximvvaanuydoomhm.dll_old"
O4 - HKCU\..\Run: [SpybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
O9 - Extra button: AIM - {AC9E2541-2814-11d5-BC6D-00B0D0A1DE45} - C:\Program Files\AIM\aim.exe
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search && Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\Program Files\Spybot - Search & Destroy\SDHelper.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
O10 - Unknown file in Winsock LSP: c:\windows\temp\ntdll64.dll
O10 - Unknown file in Winsock LSP: c:\windows\temp\ntdll64.dll
O17 - HKLM\System\CCS\Services\Tcpip\..\{765CF0D3-3E4B-4ABB-960C-9215422692AB}: NameServer = 66.174.95.44 69.78.96.14
O20 - AppInit_DLLs: wbsys.dll,C:\WINDOWS\system32\jarizasu.dll
O23 - Service: Lavasoft Ad-Aware Service (aawservice) - Lavasoft - C:\Program Files\Lavasoft\Ad-Aware\aawservice.exe
O23 - Service: Adobe LM Service - Adobe Systems - C:\Program Files\Common Files\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: BitDefender Scan Server (bdss) - Unknown owner - C:\Program Files\Common Files\Softwin\BitDefender Scan Server\bdss.exe
O23 - Service: CyberLink Background Capture Service (CBCS) (CLCapSvc) - Unknown owner - C:\Program Files\ATI\Catalyst Media Center\Kernel\TV\CLCapSvc.exe (file missing)
O23 - Service: CyberLink Task Scheduler (CTS) (CLSched) - Unknown owner - C:\Program Files\ATI\Catalyst Media Center\Kernel\TV\CLSched.exe (file missing)
O23 - Service: CyberLink Media Library Service - Unknown owner - C:\Program Files\ATI\Catalyst Media Center\Kernel\CLML_NTService\CLMLServer.exe (file missing)
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Program Files\Java\jre6\bin\jqs.exe
O23 - Service: Logitech Bluetooth Service (LBTServ) - Logitech, Inc. - C:\Program Files\Common Files\Logishrd\Bluetooth\LBTServ.exe
O23 - Service: BitDefender Desktop Update Service (LIVESRV) - SOFTWIN S.R.L. - C:\Program Files\Common Files\Softwin\BitDefender Update Service\livesrv.exe
O23 - Service: NMIndexingService - Nero AG - C:\Program Files\Common Files\Nero\Lib\NMIndexingService.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: PnkBstrA - Unknown owner - C:\WINDOWS\system32\PnkBstrA.exe
O23 - Service: BitDefender Virus Shield (VSSERV) - SOFTWIN S.R.L. - C:\Program Files\Softwin\BitDefender10\vsserv.exe
O23 - Service: BitDefender Communicator (XCOMM) - SOFTWIN S.R.L - C:\Program Files\Common Files\Softwin\BitDefender Communicator\xcommsvr.exe

--
End of file - 5742 bytes

Just let me know if there's anything else you need.

[Shaba]

Hi johnny_dot_exe

Download gmer.zip and save to your desktop.
alternate download site

• Unzip/extract the file to its own folder. (Click here for information on how to do this if not sure. Win 2000 users click here.
• When you have done this, disconnect from the Internet and close all running programs.
  There is a small chance this application may crash your computer so save any work you have open.
• Double-click on Gmer.exe to start the program.
• Allow the gmer.sys driver to load if asked.
• If it gives you a warning at program start about rootkit activity and asks if you want to run a scan...click NO.
• Click on the Rootkit tab.
• Look at the right hand side (under Files) and uncheck all drives with the exception of your C drive.
• Make sure all other boxes on the right of the screen are checked, EXCEPT for "Show All".
• Click on the "Scan" and wait for the scan to finish.
  Note: Before scanning, make sure all other running programs are closed and no other actions like a scheduled antivirus scan will occur while this scan completes. Also do not use your computer during the scan.
• When completed, click on the Copy button and right-click on your Desktop, choose "New" > Text document. Once the file is created, open it and right-click again and choose Paste or Ctrl+V. Save the file as gmer.txt and copy the information in your next reply.
• Note: If you have any problems, try running GMER in SAFE MODE"

Important! Please do not select the "Show all" checkbox during the scan..

[johnny_dot_exe]

I ended up getting rid of the viruses last night with MBAM, and after that it wouldn't find anything else in scans. SpyBot kept finding the win32.TDSS.rtk files...but manual searching with hidden files shown didn't turn them up, windows file search didn't either. There was also zero signs or side effects of a virus after that MBAM scan. I was no longer getting those "Warning!!!" banners on firefox, my bandwidth wasn't getting eaten up anymore...looked as though the problem was fixed.

...except, all my removable media drive letters under My Computer disappeared. When I plugged in a thumb drive or my blackberry, those wouldn't even show up. I couldn't even run partition magic, kept getting an error at startup saying "partition's drive letter not found." When I tried going to Windows Disk Management, it would only show my CD drives and nothing else. Not sure if it was the virus that did this, or if BitDefender did it because some AV software are known to do this. I ended up reformatting early this morning due to this issue, which may not have had anything to do with the virus. Just figured I'd mention it in case someone else had the same issues I did with the same virus or the same AV.

So in the end SpyBot found some of the files, but couldn't rid of them. MBAM found what looked to be ALL the files(16), and looks like it got rid of all of them effectively. With a fresh windows install, I'm now running MBAM, SpyBot + TeaTimer, FireFox + NoScript plugin(HIGHLY recommended). I will not re-install Ad-Aware or BitDefender because they were 100% uneffective.

Here's the MBAM log from the first scan using that program, when it found all of the virus files and successfully deleted them-

Malwarebytes' Anti-Malware 1.36
Database version: 2132
Windows 5.1.2600 Service Pack 3

5/14/2009 10:32:20 PM
mbam-log-2009-05-14 (22-32-20).txt

Scan type: Full Scan (C:\|F:\|)
Objects scanned: 173822
Time elapsed: 17 minute(s), 33 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 1
Registry Keys Infected: 2
Registry Values Infected: 16
Registry Data Items Infected: 7
Folders Infected: 0
Files Infected: 4

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
C:\WINDOWS\Temp\ntdll64.dll (Trojan.FakeAlert) -> Delete on reboot.

Registry Keys Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6be51ef0-2f9f-4040-8603-0c5563bc2b84} (Trojan.Vundo.H) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\CLSID\{6be51ef0-2f9f-4040-8603-0c5563bc2b84} (Trojan.Vundo.H) -> Quarantined and deleted successfully.

Registry Values Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletingb1923 (Trojan.TDSS) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletingd846 (Trojan.TDSS) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletingb4626 (Trojan.TDSS) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletingd9990 (Trojan.TDSS) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletinga7656 (Trojan.TDSS) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletingc277 (Trojan.TDSS) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletinga5732 (Trojan.TDSS) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletingc4263 (Trojan.TDSS) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletingb3664 (Trojan.TDSS) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletingd5233 (Trojan.TDSS) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletinga9050 (Trojan.TDSS) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletingc4158 (Trojan.TDSS) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletingb597 (Trojan.Agent) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletingd1454 (Trojan.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletinga7484 (Trojan.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\spybotdeletingc1957 (Trojan.Agent) -> Quarantined and deleted successfully.

Registry Data Items Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Start_ShowMyComputer (Hijack.StartMenu) -> Bad: (0) Good: (1) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\activedesktop\NoChangingWallpaper (Hijack.DisplayProperties) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoSetActiveDesktop (Hijack.DisplayProperties) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoActiveDesktopChanges (Hijack.DisplayProperties) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\AntiVirusDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Not selected for removal.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\FirewallDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Not selected for removal.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\UpdatesDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Not selected for removal.

Folders Infected:
(No malicious items detected)

Files Infected:
C:\WINDOWS\system32\ovfsthhgmugiomxvhxjlhwhovurtegfmvyxbrr.dll (Trojan.TDSS) -> Delete on reboot.
C:\WINDOWS\system32\ovfsthqwxkoqoruxkjyvmfximvvaanuydoomhm.dll_old (Trojan.TDSS) -> Delete on reboot.
C:\WINDOWS\Temp\ntdll64.dll (Trojan.FakeAlert) -> Delete on reboot.
C:\WINDOWS\system32\win32hlp.cnf (Trojan.Agent) -> Quarantined and deleted successfully.

[Shaba]

I would appreciate if you could follow my instructions and not to run any scans on your own

So next step would be running GMER.

[johnny_dot_exe]

...I ended up reformatting early this morning...

The MBAM scan was done shortly after this thread was made, the reformat was not much longer after that...both before you posted your instructions. It's all in my last reply for you to read. I posted all that to let you guys know the problem was dealt with, and posted the original MBAM scan results in hopes that they can be useful for future issues on other people's computers. Also noted which programs are worth having to prevent and/or possibly fix the problem I had.

Thanks.

[Shaba]

Then please post back a fresh HijackThis log and I will give you some prevention tips

[johnny_dot_exe]

Here's a new HJT log, after reformat. I'm not quite finished re-installing all my games / programs / etc. I do have windows back up to date, all drivers up to date, MBAM, HJT, Spybot + TeaTimer, and firefox now has the NoScript plugin. I'm making sure to be prepared with the right stuff this time!

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 1:58:09 AM, on 5/16/2009
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP3 (6.00.2900.5512)
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:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
C:\Program Files\Alltel\QuickLink Mobile\QuickLink Mobile.exe
C:\Program Files\Common Files\Research In Motion\USB Drivers\BbDevMgr.exe
C:\Program Files\Steam\steam.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Program Files\Windows Live\Contacts\wlcomm.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = about:blank
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.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
O4 - HKLM\..\Run: [RivaTunerStartupDaemon] "C:\Program Files\RivaTuner v2.22\RivaTuner.exe" /S
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKCU\..\Run: [SpybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
O9 - Extra button: AIM - {AC9E2541-2814-11d5-BC6D-00B0D0A1DE45} - C:\Program Files\AIM\aim.exe
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search && Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\Program Files\Spybot - Search & Destroy\SDHelper.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
O17 - HKLM\System\CCS\Services\Tcpip\..\{3C78136C-1182-48FC-9C7F-B6422BFE2A48}: NameServer = 66.174.95.44 69.78.96.14
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Program Files\Java\jre6\bin\jqs.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe

--
End of file - 3466 bytes

Any advice / prevention tips would be greatly appreciated.

[Shaba]

You will need to install an antivirus and a firewall as well.

Do you want to install BitDefender or do I suggest some freeware alternatives?

[johnny_dot_exe]

BitDefender didn't prove to be useful at all during that virus, it detected nothing, kept crashing halfway through the scans, and several people say it could have been the reason why my removable drives disappeared.

I could use a few suggestions on freeware AV and firewalls.

[Shaba]

Can't comment on other things but detection.

Malware is made to avoid detection and amount of new malware is so huge nowadays that vendors can't keep up with it.

So then it comes to prevention

Below are my suggestions:

1) Antivir PersonalEdition Classic - Free anti-virus software for Windows. Free support.
2) avast! 4 Home Edition - Anti-virus program for Windows. The home edition is freeware for noncommercial users.
3) AVG Anti-Virus Free Edition - Free edition of the AVG anti-virus program for Windows.

You should run only one antivirus program at a time. Having more than one antivirus program active in memory uses additional resources and results in program conflicts and false virus alerts.

1) Comodo (Uncheck during installation "Install COMODO Antivirus (Recommended)"!, "Install Comodo SafeSurf..", Make Comodo my default search provider" and "Make Comodo Search my homepage")
2) Online Armor
3) PC Tools
4) Sunbelt/Kerio
5) ZoneAlarm (uncheck ZoneAlarm Spy Blocker during installation if you choose this one)

If you are using the built-in Windows XP firewall, it is not recommended as it does not block outgoing connections. This means that any malware on your computer is free to "phone home" for more instructions. Simply put, Windows XP contains a mediocre firewall. This firewall is NO replacement for a dedicated software solution. Remember to use only one firewall at the same time.