My computer is infected with Vanti-BB. I have Avast Pro. Every time I boot up it detects the infection and then whatever I choose it never cleans up the virus because the next time it is there again.
I’m getting tired of this. How do I clean this virus up? I have already tried boot-time scan, no luck.
Thanks.
Welcome to the forums, gmagana. 
Please download HijackThis from the link below, run the program but do not make any fixes, and then post the log results in this thread using the “copy & paste” method. It will probably take more than one post to be able to get the complete log posted. Someone will review your log and then offer help.
http://filehippo.com/download_hijackthis/
C:\WINDOWS\caxchg.exe
C:\Program Files\SigmaTel\C-Major Audio\ControlPanel\StacSysTray.exe
C:\Program Files\Raxco\PerfectDisk2008\PD91Agent.exe
C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\WINDOWS\AGRSMMSG.exe
C:\Program Files\HP\ToolBoxFX\bin\HPTLBXFX.exe
C:\Program Files\Microsoft SQL Server\90\Shared\sqlwriter.exe
C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
C:\Program Files\HP\HP UT\bin\hppusg.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Adobe\Acrobat 8.0\Acrobat\Acrotray.exe
C:\PROGRA~1\SigmaTel\C-MAJO~1\CONTRO~1\stacsrv.exe
C:\Program Files\Microsoft Office\Office12\GrooveMonitor.exe
C:\Program Files\Common Files\VMware\VMware Virtual Image Editing\vmount2.exe
C:\Program Files\Winamp\winampa.exe
C:\Program Files\Unlocker\UnlockerAssistant.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\VMware\VMware Workstation\vmware-tray.exe
C:\WINDOWS\system32\vmnat.exe
C:\Program Files\VMware\VMware Workstation\hqtray.exe
C:\WINDOWS\System32\wltrysvc.exe
C:\Program Files\Windows Media Player\WMPNetwk.exe
C:\WINDOWS\System32\bcmwltry.exe
C:\WINDOWS\system32\ctfmon.exe
C:\PROGRA~1\COMMON~1\X10\Common\x10nets.exe
C:\Program Files\Xobni Insight\XobniService.exe
C:\Program Files\Windows Media Player\WMPNSCFG.exe
C:\WINDOWS\system32\wbem\wmiprvse.exe
C:\Program Files\Common Files\Nero\Lib\NMBgMonitor.exe
C:\Program Files\VMware\VMware Workstation\vmware-authd.exe
C:\WINDOWS\system32\vmnetdhcp.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\system32\taskmgr.exe
C:\Program Files\Common Files\Nero\Lib\NMIndexingService.exe
C:\Program Files\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe
C:\WINDOWS\System32\alg.exe
C:\Program Files\Microsoft Office\Office12\OUTLOOK.EXE
C:\Program Files\Adobe\Adobe Soundbooth CS3\Adobe Soundbooth CS3.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
(continued…)
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: ContributeBHO Class - {074C1DC5-9320-4A9A-947D-C042949C6216} - C:\Program Files\Adobe/Adobe Contribute CS3/contributeieplugin.dll
O2 - BHO: Skype add-on (mastermind) - {22BF413B-C6D2-4d91-82A9-A0F997BA588C} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - C:\Program Files\Microsoft Office\Office12\GrooveShellExtensions.dll
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: Adobe PDF Conversion Toolbar Helper - {AE7CD045-E861-484f-8273-0445EE161910} - C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll
O2 - BHO: Microsoft Web Test Recorder 9.0 Helper - {E31CE47F-C268-41ba-897B-B415E613947D} - C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\PrivateAssemblies\Microsoft.VisualStudio.QualityTools.RecorderBarBHO90.dll
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll
O3 - Toolbar: Contribute Toolbar - {517BDDE4-E3A7-4570-B21E-2B52B6139FC7} - C:\Program Files\Adobe/Adobe Contribute CS3/contributeieplugin.dll
O4 - HKLM..\Run: [PRONoMgr.exe] C:\Program Files\Intel\NCS\PROSet\PRONoMgr.exe
O4 - HKLM..\Run: [shicoxp] C:\WINDOWS\shicoxp.exe
O4 - HKLM..\Run: [caxchg] C:\WINDOWS\caxchg.exe
O4 - HKLM..\Run: [StacSysTray] C:\Program Files\SigmaTel\C-Major Audio\ControlPanel\StacSysTray.exe
O4 - HKLM..\Run: [SynTPLpr] C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
O4 - HKLM..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM..\Run: [ToolBoxFX] “C:\Program Files\HP\ToolBoxFX\bin\HPTLBXFX.exe” /enum:on /alerts:on /notifications:on /systrayIcon:on /fl:on /fr:on /appData:on
O4 - HKLM..\Run: [HP Software Update] C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
O4 - HKLM..\Run: [HPUsageTracking] “C:\Program Files\HP\HP UT\bin\hppusg.exe” "C:\Program Files\HP\HP UT"
O4 - HKLM..\Run: [Acrobat Assistant 8.0] “C:\Program Files\Adobe\Acrobat 8.0\Acrobat\Acrotray.exe”
O4 - HKLM..\Run: [Adobe_ID0EYTHM] C:\PROGRA~1\COMMON~1\Adobe\ADOBEV~1\Server\bin\VERSIO~2.EXE
O4 - HKLM..\Run: [GrooveMonitor] “C:\Program Files\Microsoft Office\Office12\GrooveMonitor.exe”
O4 - HKLM..\Run: [WinampAgent] “C:\Program Files\Winamp\winampa.exe”
O4 - HKLM..\Run: [UnlockerAssistant] “C:\Program Files\Unlocker\UnlockerAssistant.exe”
O4 - HKLM..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM..\Run: [vmware-tray] C:\Program Files\VMware\VMware Workstation\vmware-tray.exe
O4 - HKLM..\Run: [VMware hqtray] “C:\Program Files\VMware\VMware Workstation\hqtray.exe”
O4 - HKLM..\Run: [NeroFilterCheck] C:\Program Files\Common Files\Nero\Lib\NeroCheck.exe
O4 - HKCU..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU..\Run: [kava] C:\WINDOWS\system32\kavo.exe
O4 - HKCU..\Run: [tava] C:\WINDOWS\system32\tavo.exe
O4 - HKCU..\Run: [WMPNSCFG] C:\Program Files\Windows Media Player\WMPNSCFG.exe
O4 - HKCU..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] “C:\Program Files\Common Files\Nero\Lib\NMBgMonitor.exe”
O4 - Startup: taskmgr.exe.lnk = C:\WINDOWS\system32\taskmgr.exe
O8 - Extra context menu item: Append to existing PDF - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Convert link target to Adobe PDF - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Convert link target to existing PDF - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Convert selected links to Adobe PDF - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIECaptureSelLinks.html
O8 - Extra context menu item: Convert selected links to existing PDF - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIEAppendSelLinks.html
O8 - Extra context menu item: Convert selection to Adobe PDF - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Convert selection to existing PDF - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Convert to Adobe PDF - res://C:\Program Files\Adobe\Acrobat 8.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~3\Office12\EXCEL.EXE/3000
O9 - Extra button: Send to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~3\Office12\ONBttnIE.dll
O9 - Extra ‘Tools’ menuitem: S&end to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~3\Office12\ONBttnIE.dll
O9 - Extra button: Skype - {77BF5300-1474-4EC7-9980-D32B190E9B07} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\Office12\REFIEBAR.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.cab?1133491514343
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://www.update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1203097958859
O18 - Protocol: grooveLocalGWS - {88FED34C-F0CA-4636-A375-3CB6248B04CD} - C:\Program Files\Microsoft Office\Office12\GrooveSystemServices.dll
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL
O23 - Service: Adobe Version Cue CS3 - Adobe Systems Incorporated - C:\Program Files\Common Files\Adobe\Adobe Version Cue CS3\Server\bin\VersionCueCS3.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.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: ##Id_String1.6844F930_1628_4223_B5CC_5BB94B879762## (Bonjour Service) - Apple Computer, Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: Biometric Authentication Service (DpHost) - DigitalPersona, Inc. - C:\Program Files\DigitalPersona\Bin\DpHost.exe
O23 - Service: FLEXnet Licensing Service - Macrovision Europe Ltd. - C:\Program Files\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe
O23 - Service: Intel NCS NetService (NetSvc) - Intel(R) Corporation - C:\Program Files\Intel\NCS\Sync\NetSvc.exe
O23 - Service: NMIndexingService - Nero AG - C:\Program Files\Common Files\Nero\Lib\NMIndexingService.exe
O23 - Service: OracleMTSRecoveryService - Oracle Corporation - C:\app\Gabriel\product\11.1.0\client_2\bin\omtsreco.exe
O23 - Service: PD91Agent - Raxco Software, Inc. - C:\Program Files\Raxco\PerfectDisk2008\PD91Agent.exe
O23 - Service: PD91Engine - Raxco Software, Inc. - C:\Program Files\Raxco\PerfectDisk2008\PD91Engine.exe
O23 - Service: Sigmatel Service (SigService) - Unknown owner - C:\Program Files\SigmaTel\C-Major Audio\ControlPanel\sigservice.exe
O23 - Service: VMware Agent Service (ufad-ws60) - VMware, Inc. - C:\Program Files\VMware\VMware Workstation\vmware-ufad.exe
O23 - Service: VMware Authorization Service (VMAuthdService) - VMware, Inc. - C:\Program Files\VMware\VMware Workstation\vmware-authd.exe
O23 - Service: VMware DHCP Service (VMnetDHCP) - VMware, Inc. - C:\WINDOWS\system32\vmnetdhcp.exe
O23 - Service: VMware Virtual Mount Manager Extended (vmount2) - VMware, Inc. - C:\Program Files\Common Files\VMware\VMware Virtual Image Editing\vmount2.exe
O23 - Service: VMware NAT Service - VMware, Inc. - C:\WINDOWS\system32\vmnat.exe
O23 - Service: WLTRYSVC - Unknown owner - C:\WINDOWS\System32\wltrysvc.exe
O23 - Service: X10 Device Network Service (x10nets) - X10 - C:\PROGRA~1\COMMON~1\X10\Common\x10nets.exe
O23 - Service: XobniService - Xobni Corporation - C:\Program Files\Xobni Insight\XobniService.exe
–
End of file - 13446 bytes
(all done!)
Lets try this
Please re-open HiJackThis and scan. Check the boxes next to all the entries listed below. [b]
O4 - HKLM..\Run: [caxchg] C:\WINDOWS\caxchg.exe
O4 - HKCU..\Run: [kava] C:\WINDOWS\system32\kavo.exe
O4 - HKCU..\Run: [tava] C:\WINDOWS\system32\tavo.exe
[/b]Now close all windows other than HiJackThis, then click Fix Checked. Close HiJackThis.
THEN
Please download the OTMoveIt2 by OldTimer.
[*] Save it to your desktop.
[*] Please double-click OTMoveIt2.exe to run it.
[*]Copy the file paths below to the clipboard by highlighting ALL of them and pressing CTRL + C (or, after highlighting, right-click and choose Copy):
C:\WINDOWS\system32\kavo.exe
C:\WINDOWS\caxchg.exe
C:\WINDOWS\system32\tavo.exe
[*] Return to OTMoveIt2, right click in the “Paste List of Files/Folders to be Moved” window (under the light blue bar) and choose Paste.
[*]Click the red Moveit! button.
[*]Copy everything in the Results window (under the green bar) to the clipboard by highlighting ALL of them and pressing CTRL + C (or, after highlighting, right-click and choose copy), and paste it in your next reply.
[*]Close OTMoveIt2
If a file or folder cannot be moved immediately you may be asked to reboot the machine to finish the move process. If you are asked to reboot the machine choose Yes.
FINALLY FOR NOW
Please download ComboFix from Here or Here to your Desktop.
Note: In the event you already have Combofix, this is a new version that I need you to download. It is important that it is saved directly to your desktop
[*]Close any open browsers.
[*]WARNING: Combofix will disconnect your machine from the Internet as soon as it starts
[]Please do not attempt to re-connect your machine back to the Internet until Combofix has completely finished.
[]If there is no internet connection after running Combofix, then restart your computer to restore back your connection.
[*]Double click on combofix.exe & follow the prompts.
[*]When finished, it will produce a report for you.
[*]Please post the “C:\ComboFix.txt” along with a new HijackThis log for further review.
Note: Do not mouseclick combofix’s window while it’s running. That may cause it to stall
Logs required : OTMoveit and Combofix
Thanks again for your help. Here is the OTMoveIT log you asked for. The Combofix log is attached as a file.
I do not see the Avast errors anymore upon bootup Does this mean my system is clean?
C:\WINDOWS\system32\kavo.exe moved successfully.
C:\WINDOWS\caxchg.exe moved successfully.
C:\WINDOWS\system32\tavo.exe moved successfully.
OTMoveIt2 v1.0.20 log created on 02192008_130903
Just a smidgeon more to do
Please open Notepad
[*] Click Start , then Run[*]Type notepad .exe in the Run Box.
Now copy/paste the entire content of the codebox below into the Notepad window:
File::
C:\WINDOWS\system32\tavo0.dll
C:\gqsk.bat
C:\.rnd
C:\p9.exe
C:\o2yf0w.bat
Then in the text file go to FILE > SAVE AS and in the dropdown box select SAVE AS TYPE to ALL FILES
Save the above as CFScript.txt
Then drag the CFScript.txt into ComboFix.exe as depicted in the animation below. This will start ComboFix again.
http://users.pandora.be/bluepatchy/miekiemoes/images/CFScript.gif
Done. Attached are the two logs…
Now the best part of the day ----- Your log now appears clean 
Double click OTMoveIt once again and you should see a CleanUp! button, press that button, you may get prompted by your firewall that OTMoveIt wants to contact the internet, allow this, a cleanup.txt will be downloaded, a message dialog will ask you if you want to proceed with the cleanup process, click Yes. This will delete all the tools you have downloaded plus itself
Now to get you off to a good start we will re-set your restore points so that all the bad stuff is gone for good. Then if you need to restore at some stage you will be clean. There are several ways to reset your your restore point but this is my method:
You now have a clean restore point, to get rid of the bad ones:
Now that you are clean, to help protect your computer in the future I recommend that you get the following free program:
[*]SpywareBlaster to help prevent spyware from installing in the first place.
It is critical to have both a firewall and anti virus to protect your system and to keep them updated.
To keep your operating system up to date visit
[*]Microsoft Windows Update
To learn more about how to protect yourself while on the internet read this article by Tony Klien: So how did I get infected in the first place?
Keep safe 
THANK YOU! You have been extremely helpful.
Why didn’t Avast catch this? I was infected with this with Avast installed and running.
Also, why couldn’t Avast clean this up?
Thanks for your help!
Because not a software is perfect…
It can’t clean what it can’t detect.
Only (some) executable files infected could be cleaned by avast VRDB.
Sorry I was not attacking Avast, I’m just worried that I am not protected enough… So if Avast was not built for this task I wouldlilke to know since I visit several different client sites (I build financial software), and it looks kind of unprofessional to boot up your computer and the first thing a client sees is an antivirus telling you you’re infected.
I just want to make sure I am protected, I got this thing from a client site’s network, so I want to make sure it does not happen again.
My computer is clean, though, so I’m happy with Avast and with your guys’ support. I think I will recommend Avast to the client that infected my computer in the first place.
Thanks!
I had several infections from several months ago. I really need to know if avast will not be updated with current virus signatures, including malware. I know software can’t be perfect, and I can understand an antivirus software may not be updated when a new virus arrive, but I cannot understand being infected (and have other computers infected too) by viruses and malware already detected since 2007.
I’m still getting infections from “kavo” (detected as WIN32.Besso by Dr. Web) and some other viruses detected by other antivirus, but for avast is still the same, now are detected by a manual scan, but inserting a pen drive is just like a nightmare, and can’t disable autorun on all computers just because of this… I’m concerned about how slow was the update of avast for these malware/virus.
I sent virus samples weeks ago. No response yet.
danny: what you mean is the difference between on-access and on-demand scan? the same file is detected when you request a direct scan of it, but is not detected when you plug your usb stick in?