vundo!grb

The anti-virus software on my computer (McAfee) repeatedly detects and deletes a trojan virus "vundo!grb" in C\Windows\System32\nwayfiax.tmp that is affecting Explorer.exe. A screen pops up every time I open Internet Explorer that says a virus was detected, then the computer freezes. When I run a virus scan, it says the computer is clean.

Please help because I don't know where to start. Thanks very much.

Hi, let's start with an MBam scan.

Hello and welcome please run these next. If you have Spybot installed temporarily disable it.
Next run ATF:
Please download ATF Cleaner by Atribune & save it to your desktop.

• Double-click ATF-Cleaner.exe to run the program.
• Under Main "Select Files to Delete" choose: Select All.
• Click the Empty Selected button.
• If you use Firefox browser click Firefox at the top and choose: Select All
• Click the Empty Selected button.
  If you would like to keep your saved passwords, please click No at the prompt.
• If you use Opera browser click Opera at the top and choose: Select All
• Click the Empty Selected button.
  If you would like to keep your saved passwords, please click No at the prompt.
• Click Exit on the Main menu to close the program.

Note: On Vista, "Windows Temp" is disabled. To empty "Windows Temp" ATF-Cleaner must be "Run as an Administrator".


Next run MBAM:
Please download Malwarebytes Anti-Malware (v1.32) and save it to your desktop.
alternate download link 1
alternate download link 2
If you have a previous version of MBAM, remove it via Add/Remove Programs and download a fresh copy.

• Make sure you are connected to the Internet.
• Double-click on mbam-setup.exe to install the application.
• When the installation begins, follow the prompts and do not make any changes to default settings.
• When installation has finished, make sure you leave both of these checked:
  • Update Malwarebytes' Anti-Malware
  • Launch Malwarebytes' Anti-Malware
• Then click Finish.

MBAM will automatically start and you will be asked to update the program before performing a scan.

• If an update is found, the program will automatically update itself.
• Press the OK button to close that box and continue.
• If you encounter any problems while downloading the updates, manually download them from here and just double-click on mbam-rules.exe to install. Alternatively, you can update through MBAM's interface from a clean computer, copy the definitions (rules.ref) located in C:\Documents and Settings\All Users\Application Data\Malwarebytes\Malwarebytes' Anti-Malware from that system to a usb stick or CD and then copy it to the infected machine.

On the Scanner tab:

• Make sure the "Perform Quick Scan" option is selected.
• Then click on the Scan button.
• If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
• The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
• When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
• Click OK to close the message box and continue with the removal process.

Back at the main Scanner screen:

• Click on the Show Results button to see a list of any malware that was found.
• Make sure that everything is checked, and click Remove Selected.
• When removal is completed, a log report will open in Notepad.
• The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
• Copy and paste the contents of that report in your next reply and exit MBAM.

Note: If MBAM encounters a file that is difficult to remove, you may be asked to reboot your computer so it can proceed with the disinfection process. Regardless if prompted to restart the computer or not, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware. MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you after scanning with MBAM. Please temporarily disable such programs or permit them to allow the changes.

After running ATF Cleaner and Malwarebytes, my computer seems to be running better. Here is the MBAM log. Is my computer fixed now?

Malwarebytes' Anti-Malware 1.34
Database version: 1736
Windows 5.1.2600 Service Pack 3

2/13/2009 7:46:45 PM
mbam-log-2009-02-13 (19-46-45).txt

Scan type: Quick Scan
Objects scanned: 87000
Time elapsed: 9 minute(s), 15 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 4
Registry Keys Infected: 38
Registry Values Infected: 3
Registry Data Items Infected: 2
Folders Infected: 11
Files Infected: 19

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
C:\WINDOWS\system32\vtUmLdCu.dll (Trojan.Vundo.H) -> Delete on reboot.
C:\WINDOWS\system32\fjqdrtih.dll (Trojan.Vundo.H) -> Delete on reboot.
C:\WINDOWS\system32\sjiwsw.dll (Trojan.Vundo.H) -> Delete on reboot.
C:\WINDOWS\system32\efcYPfFV.dll (Trojan.Vundo.H) -> Delete on reboot.

Registry Keys Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{14ab137a-baa8-4749-96d4-5b2f4f63c238} (Trojan.Vundo.H) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\CLSID\{14ab137a-baa8-4749-96d4-5b2f4f63c238} (Trojan.Vundo.H) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6d794cb4-c7cd-4c6f-bfdc-9b77afbdc02c} (Trojan.Vundo.H) -> Delete on reboot.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\efcypffv (Trojan.Vundo.H) -> Delete on reboot.
HKEY_CLASSES_ROOT\CLSID\{6d794cb4-c7cd-4c6f-bfdc-9b77afbdc02c} (Trojan.Vundo.H) -> Delete on reboot.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{e58f0496-6264-464c-a21e-8b59de311dcf} (Trojan.Vundo.H) -> Delete on reboot.
HKEY_CLASSES_ROOT\CLSID\{e58f0496-6264-464c-a21e-8b59de311dcf} (Trojan.Vundo.H) -> Delete on reboot.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Stats\{14ab137a-baa8-4749-96d4-5b2f4f63c238} (Trojan.Vundo.H) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Stats\{6d794cb4-c7cd-4c6f-bfdc-9b77afbdc02c} (Trojan.Vundo.H) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Stats\{e58f0496-6264-464c-a21e-8b59de311dcf} (Trojan.Vundo.H) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\mywebsearch.pseudotransparentplugin (Adware.MyWebSearch) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\mywebsearch.pseudotransparentplugin.1 (Adware.MyWebSearch) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\saix.installercaller.1 (Adware.180Solutions) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\Interface\{2e9937fc-cf2f-4f56-af54-5a6a3dd375cc} (Adware.MyWebSearch) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\Interface\{741de825-a6f0-4497-9aa6-8023cf9b0fff} (Adware.MyWebSearch) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\Interface\{dd469a88-316c-441d-b712-783d9b9a6707} (Adware.180Solutions) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\CLSID\{147a976f-eee1-4377-8ea7-4716e4cdd239} (Adware.MyWebSearch) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\CLSID\{84da4fdf-a1cf-4195-8688-3e961f505983} (Adware.MyWebSearch) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\CLSID\{a4730ebe-43a6-443e-9776-36915d323ad3} (Adware.MyWebSearch) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\AppID\{d28cd14c-50be-4cfa-951e-b37f25da3472} (Adware.180Solutions) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{56256a51-b582-467e-b8d4-7786eda79ae0} (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{56256a51-b582-467e-b8d4-7786eda79ae0} (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\tdssdata (Trojan.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\tdss (Trojan.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MS Juan (Malware.Trace) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\contim (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\instkey (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MS Track System (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\rdfa (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\FCOVM (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\RemoveRP (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\MyWebSearch (Adware.MyWebSearch) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Multimedia\WMPlayer\Schemes\f3pss (Adware.MyWebSearch) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\FunWebProducts (Adware.MyWebSearch) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Fun Web Products (Adware.MyWebSearch) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\MyWebSearch (Adware.MyWebSearch) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\FocusInteractive (Adware.MyWebSearch) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Fun Web Products (Adware.MyWebSearch) -> Quarantined and deleted successfully.

Registry Values Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\3a510faa (Trojan.Vundo.H) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellExecuteHooks\{6d794cb4-c7cd-4c6f-bfdc-9b77afbdc02c} (Trojan.Vundo.H) -> Delete on reboot.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\MenuExt\&Search\ (Adware.Hotbar) -> Quarantined and deleted successfully.

Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\LSA\Security Packages (Trojan.Vundo.H) -> Data: c:\windows\system32\vtumldcu -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\LSA\Authentication Packages (Trojan.Vundo.H) -> Data: c:\windows\system32\vtumldcu -> Delete on reboot.

Folders Infected:
C:\Program Files\MyWebSearch (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\MyWebSearch\bar (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\MyWebSearch\bar\Settings (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\MyWebSearch\bar\History (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\FunWebProducts (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\FunWebProducts\ScreenSaver (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\FunWebProducts\ScreenSaver\Images (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\FunWebProducts\Shared (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Documents and Settings\tollean\Application Data\FunWebProducts (Adware.MyWay) -> Quarantined and deleted successfully.
C:\Documents and Settings\tollean\Application Data\FunWebProducts\Data (Adware.MyWay) -> Quarantined and deleted successfully.
C:\Documents and Settings\tollean\Application Data\FunWebProducts\Data\tollean (Adware.MyWay) -> Quarantined and deleted successfully.

Files Infected:
C:\WINDOWS\system32\sjiwsw.dll (Trojan.Vundo.H) -> Delete on reboot.
C:\WINDOWS\system32\efcYPfFV.dll (Trojan.Vundo.H) -> Delete on reboot.
C:\WINDOWS\system32\vtUmLdCu.dll (Trojan.Vundo.H) -> Delete on reboot.
C:\WINDOWS\system32\uCdLmUtv.ini (Trojan.Vundo.H) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\uCdLmUtv.ini2 (Trojan.Vundo.H) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\fjqdrtih.dll (Trojan.Vundo.H) -> Delete on reboot.
C:\WINDOWS\system32\tgdwdolg.dll (Trojan.Vundo.H) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\fcccbaYR.dll (Trojan.Vundo) -> Quarantined and deleted successfully.
C:\Program Files\MyWebSearch\bar\Settings\s_pid.dat (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\MyWebSearch\bar\Settings\settings.dat (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\MyWebSearch\bar\Settings\setting2.htm (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\MyWebSearch\bar\Settings\prevcfg2.htm (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\MyWebSearch\bar\History\search2 (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\FunWebProducts\Shared\033F6A06.dat (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Documents and Settings\tollean\Application Data\FunWebProducts\Data\tollean\avatar.dat (Adware.MyWay) -> Quarantined and deleted successfully.
C:\Documents and Settings\tollean\Application Data\FunWebProducts\Data\tollean\register.dat (Adware.MyWay) -> Quarantined and deleted successfully.
C:\Documents and Settings\tollean\Local Settings\Temp\TDSS53fc.tmp (Trojan.Agent) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\TDSSlxwp.dll (Trojan.Agent) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\TDSStkdv.log (Trojan.TDSS) -> Quarantined and deleted successfully.

Hello some of these are both serious and stubborn. So I must post this advice now..

One or more of the identified infections is a backdoor trojan.

This allows hackers to remotely control your computer, steal critical system information and download and execute files.

I would counsel you to disconnect this PC from the Internet immediately. If you do any banking or other financial transactions on the PC or if it should contain any other sensitive information, please get to a known clean computer and change all passwords where applicable, and it would be wise to contact those same financial institutions to apprise them of your situation.

Though the trojan has been identified and can be killed, because of it's backdoor functionality, your PC is very likely compromised and there is no way to be sure your computer can ever again be trusted. Many experts in the security community believe that once infected with this type of trojan, the best course of action would be a reformat and reinstall of the OS. Please read these for more information:

How Do I Handle Possible Identify Theft, Internet Fraud and CC Fraud?
When Should I Format, How Should I Reinstall

We can still clean this machine but I can't guarantee that it will be 100% secure afterwards. Let me know what you decide to do.

If you decide to clean the next step is to update Mbam and rescan
Rerun MBAM

Open MBAM in normal mode and click Update tab, select Check for Updates,when done
click Scanner tab,select Quick scan and scan.
After scan click Remove Selected, Post new scan log and Rebootinto normal mode.

I have checked for updates and run another quick scan with no infected items found. I'm still a little worried that a trojan might be on the computer, but would like to try clean the computer without reformatting and reinstalling the operating system. What is the next step? Thanks so much for your help. Here if the log of the virus scan.

Malwarebytes' Anti-Malware 1.34
Database version: 1761
Windows 5.1.2600 Service Pack 3

2/14/2009 12:43:20 PM
mbam-log-2009-02-14 (12-43-20).txt

Scan type: Quick Scan
Objects scanned: 84169
Time elapsed: 7 minute(s), 29 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)

OK that's a good sign,now we'll run these.
SDFix:
Please print out and follow these instructions: "How to use SDFix". <- This program is for Windows 2000/XP ONLY.
When using this tool, you must use the Administrator's account or an account with "Administrative rights"

• Disconnect from the Internet and temporarily disable your anti-virus, script blocking and any real time protection programs before performing a scan.
• When done, the SDFix report log will open in notepad and automatically be saved in the SDFix folder as Report.txt.
• If SDFix is unable to run after rebooting from Safe Mode, run SDFix in either Mode, and type F, then press Enter for it to finish the final stage and produce the report.
• Please copy and paste the contents of Report.txt in your next reply.
• Be sure to renable you anti-virus and and other security programs before connecting to the Internet.

-- If the computer has been infected with the VirusAlert! malware warning from the clock and the Start Menu icons or drives are not visible, open the SDFix folder, right-click on either the XP_VirusAlert_Repair.inf or W2K VirusAlert_Repair.inf (depending on your version of Windows) and select Install from the Context menu. Then reboot to apply the changes.


Now please SAS:
Please download and scan with SUPERAntiSpyware Free

• Double-click SUPERAntiSypware.exe and use the default settings for installation.
• An icon will be created on your desktop. Double-click that icon to launch the program.
• If asked to update the program definitions, click "Yes". If not, update the definitions before scanning by selecting "Check for Updates". (If you encounter any problems while downloading the updates, manually download them from here. Double-click on the hyperlink for Download Installer and save SASDEFINITIONS.EXE to your desktop. Then double-click on SASDEFINITIONS.EXE to install the definitions.)
• In the Main Menu, click the Preferences... button.
• Click the "General and Startup" tab, and under Start-up Options, make sure "Start SUPERAntiSpyware when Windows starts" box is unchecked.
• Click the "Scanning Control" tab, and under Scanner Options, make sure the following are checked (leave all others unchecked):
  • Close browsers before scanning.
  • Scan for tracking cookies.
  • Terminate memory threats before quarantining.
• Click the "Close" button to leave the control center screen and exit the program.
• Do not run a scan just yet.

Reboot your computer in "Safe Mode" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode".

Scan with SUPERAntiSpyware as follows:

• Launch the program and back on the main screen, under "Scan for Harmful Software" click Scan your computer.
• On the left, make sure you check C:\Fixed Drive.
• On the right, under "Complete Scan", choose Perform Complete Scan and click "Next".
• After the scan is complete, a Scan Summary box will appear with potentially harmful items that were detected. Click "OK".
• Make sure everything has a checkmark next to it and click "Next".
• A notification will appear that "Quarantine and Removal is Complete". Click "OK" and then click the "Finish" button to return to the main menu.
• If asked if you want to reboot, click "Yes" and reboot normally.
• To retrieve the removal information after reboot, launch SUPERAntispyware again.
  • Click Preferences, then click the Statistics/Logs tab.
  • Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
  • If there are several logs, click the current dated log and press View log. A text file will open in your default text editor.
  • Please copy and paste the Scan Log results in your next reply.
• Click Close to exit the program.