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Errors/slowness In Connection With Boaxxe.dll And Audiode.dll


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#1 Dan Black

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Posted 06 September 2008 - 07:48 AM

Was having some viral-related issues with my computer running Windows XP Home, a system-tray icon looking like a big white "X" in a red circle kept warning of "virus detected". So I installed McAfee and bought a subscription. It took care of some of the problems, but one in particular seems to have it stumped.

The specific issue arises when I try to run any instances of either Windows Explorer or Internet Explorer. First off, they are both incredibly slow to open, and I believe this is due to some contention between what the virus is attempting to do at that moment, and the McAfee software intercepting the activity and trying to block it. Either app eventually opens, but along with it comes a McAfee pop-up stating that:

McAfee has automatically blocked and removed a Trojan.

About this Trojan
Detected: Boaxxe.dll (Trojan), Boaxxe.dll (Trojan)
Location: C:\WINDOWS\system32\audiode.dll



However, it obviously hasn't removed it at all, because it happens exactly the same the next time I try to open either Explorer or IE.

One other item of note, IE only opens with add-ons turned off anymore. I assume it is a consequence of either McAfee's interception of the malware's attempt to do something through the add-ons, or that the virus itself has actually got IE on some kind of alert.

At any rate, this is just about the last couple of inconveniences I see after the installation, scanning and cleaning that McAfee did, and it would be great not to have to wait 3 minutes every time I try to access files.

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#2 rigel

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Posted 06 September 2008 - 04:36 PM

Hi Dan Black - welcome to BleepingComputer!

Please download Malwarebytes Anti-Malware and save it to your desktop.
alternate download link 1
alternate download link 2
  • 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.
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. Reagardless 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.

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith


#3 Dan Black

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Posted 11 September 2008 - 07:51 AM

Results of scan (and consequently, the software did its job of deletion on start-up,and I no longer have the problems with Explorer slowness and McAfee alerts, however Internet Explorer still refuses to run with add-ons enabled):

Malwarebytes' Anti-Malware 1.28
Database version: 1138
Windows 5.1.2600 Service Pack 2

9/11/2008 8:20:57 AM
mbam-log-2008-09-11 (08-20-50).txt

Scan type: Quick Scan
Objects scanned: 97922
Time elapsed: 29 minute(s), 25 second(s)

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

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{f737333a-9cda-4fb8-9de8-f186c6c3139d} (Trojan.BHO.H) -> No action taken.
HKEY_CLASSES_ROOT\CLSID\{f737333a-9cda-4fb8-9de8-f186c6c3139d} (Trojan.BHO.H) -> No action taken.
HKEY_CLASSES_ROOT\CLSID\{9afb8248-617f-460d-9366-d71cdeda3179} (Adware.MyWebSearch) -> No action taken.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Multimedia\WMPlayer\Schemes\f3pss (Adware.MyWebSearch) -> No action taken.

Registry Values Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\bf (Trojan.Agent) -> No action taken.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\bk (Trojan.Agent) -> No action taken.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\iu (Trojan.Agent) -> No action taken.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\mu (Trojan.Agent) -> No action taken.

Registry Data Items Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Start_ShowHelp (Hijack.StartMenu) -> Bad: (0) Good: (1) -> No action taken.

Folders Infected:
(No malicious items detected)

Files Infected:
C:\WINDOWS\system32\audiode.dll (Trojan.BHO.H) -> No action taken.

#4 quietman7

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Posted 11 September 2008 - 09:53 AM

Your MBAM log shows "No action taken". This usually occurs if you forget to click "Remove Selected" and instead just click "Save Logfile". Please review these instructions (scroll down), rescan again (Quick Scan) in normal mode and check all items found for removal. Don't forgot to reboot afterwards. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware. After performing a new scan, click the Logs tab and copy/paste the contents of the new report in your next reply.
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#5 Dan Black

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Posted 12 September 2008 - 05:42 PM

Couldhave sworn I hit the "Remove selected" button. At any rate, updated log below:

Malwarebytes' Anti-Malware 1.28
Database version: 1138
Windows 5.1.2600 Service Pack 2

9/11/2008 8:42:21 PM
mbam-log-2008-09-11 (20-42-21).txt

Scan type: Quick Scan
Objects scanned: 97765
Time elapsed: 26 minute(s), 18 second(s)

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

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{f737333a-9cda-4fb8-9de8-f186c6c3139d} (Trojan.BHO.H) -> Delete on reboot.
HKEY_CLASSES_ROOT\CLSID\{f737333a-9cda-4fb8-9de8-f186c6c3139d} (Trojan.BHO.H) -> Delete on reboot.

Registry Values Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\bf (Trojan.Agent) -> Delete on reboot.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\bk (Trojan.Agent) -> Delete on reboot.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\iu (Trojan.Agent) -> Delete on reboot.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\mu (Trojan.Agent) -> Delete on reboot.

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
C:\WINDOWS\system32\audiode.dll (Trojan.BHO.H) -> Delete on reboot.

#6 quietman7

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Posted 12 September 2008 - 06:19 PM

Your MBAM log indicates some files will be deleted on reboot. If MBAM encounters a file that is difficult to remove, you need to restart the computer so the malware can be fully removed. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware. If you have not rebooted, make sure you do this. When done, rescan again with MBAM and check all items found for removal. Then click the Logs tab and copy/paste the contents of the new report in your next reply. If you did reboot, then rescan again anyway and post a new log.
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#7 Dan Black

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Posted 24 September 2008 - 06:49 AM

Here is the log. No matter how many times I scan and re-boot when it says it will delete on re-boot, these same several entries show up in the log:\

Malwarebytes' Anti-Malware 1.28
Database version: 1138
Windows 5.1.2600 Service Pack 2

9/13/2008 9:55:37 PM
mbam-log-2008-09-13 (21-55-37).txt

Scan type: Quick Scan
Objects scanned: 97864
Time elapsed: 28 minute(s), 17 second(s)

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

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{f737333a-9cda-4fb8-9de8-f186c6c3139d} (Trojan.BHO.H) -> Delete on reboot.
HKEY_CLASSES_ROOT\CLSID\{f737333a-9cda-4fb8-9de8-f186c6c3139d} (Trojan.BHO.H) -> Delete on reboot.

Registry Values Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\bf (Trojan.Agent) -> Delete on reboot.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\bk (Trojan.Agent) -> Delete on reboot.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\iu (Trojan.Agent) -> Delete on reboot.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\mu (Trojan.Agent) -> Delete on reboot.

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
C:\WINDOWS\system32\audiode.dll (Trojan.BHO.H) -> Delete on reboot.

#8 rigel

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Posted 24 September 2008 - 07:59 AM

Good morning Dan,

This is going to be a long post - you may wish to print it. :thumbsup:

The following items appear to be associated with a rootkit as of late.

Registry Values Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\bf (Trojan.Agent) -> No action taken.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\bk (Trojan.Agent) -> No action taken.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\iu (Trojan.Agent) -> No action taken.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\mu (Trojan.Agent) -> No action taken.

IMPORTANT NOTE: One or more of the identified infections was related to a rootkit component. Rootkits and backdoor Trojan are very dangerous because they use advanced techniques (backdoors) as a means of accessing a computer system that bypasses security mechanisms and steal sensitive information which they send back to the hacker. Many rootkits can hook into the Windows 32-bit kernel, and patch several APIs to hide new registry keys and files they install. Remote attackers use backdoor Trojans and rootkits as part of an exploit to gain unauthorized access to a computer and take control of it without your knowledge.

If your computer was used for online banking, has credit card information or other sensitive data on it, all passwords should be changed immediately to include those used for banking, email, eBay, paypal and online forums. You should consider them to be compromised. They should be changed by using a different computer and not the infected one. If not, an attacker may get the new passwords and transaction information. Banking and credit card institutions should be notified of the possible security breach. Because your computer was compromised please read How Do I Handle Possible Identify Theft, Internet Fraud and CC Fraud?

Although the rootkit was identified and removed, your PC has likely been compromised and there is no way to be sure the computer can ever be trusted again. It is dangerous and incorrect to assume that because the rootkit has been removed the computer is now secure. In some instances an infection may have caused so much damage to your system that it cannot be completely cleaned or repaired. The malware may leave so many remnants behind that security tools cannot find them. Many experts in the security community believe that once infected with this type of malware, the best course of action is to wipe the drive clean, reformat and reinstall the OS. Please read:

"When should I re-format? How should I reinstall?"
"Help: I Got Hacked. Now What Do I Do?"
"Where to draw the line? When to recommend a format and reinstall?"

Should you decide not to follow that advice, we will do our best to help clean the computer of any infections but we cannot guarantee it to be trustworthy or that the removal will be successful. Let me know how you wish to proceed.

If you choose to continue, I need you to run a couple of things please.

Please download ATF Cleaner by Atribune & save it to your desktop. alternate download link DO NOT use yet.
Please download and install 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 and unzip into the program's folder.)
  • Under the "Configuration and Preferences", 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".

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".

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.
Then run:
Download Sophos Anti-rootkit & save it to your desktop.
Be sure to read the Sophos Anti-Rookit User Manual. A copy of this manual sarman.pdf can also be found inside the program folder after installation.
  • Double-click sarsfx.exe to begin the installation, read the license agreement and click Accept.
  • Allow the default location of C:\Program Files\Sophos\Sophos Anti-Rootkit and click Install.
  • A message will appear "Sophos Anti-Rootkit was successfully installed. Click 'yes' to start it now". Click Yes.
  • Make sure the following are checked:
    • Running processes
    • Windows Registry
    • Local Hard Drives
  • Click "Start scan".
  • Sophos Anti-Rootkit will scan the selected areas and display any suspicious files in the upper panel.
  • When the scan is complete, a pop-up screen will appear with "Rootkit Scan Results". Click OK to continue.
  • Click on the suspicious file to display more information about it in the lower panel which also includes whether the item is recommended for removal.
    • Files tagged as Removable: No are not marked for removal and cannot be removed.
    • Files tagged as Removable: Yes (clean up recommended) are marked for removal by default.
    • Files tagged as Removable: Yes (but clean up not recommended) are not marked for removal because Sophos did not recognize them. These files will require further investigation.
  • Select only items recommended for removal, then click "Clean up checked items". You will be asked to confirm, click Yes.
  • A pop up window will appear advising the cleanup will be done when you restart your computer. Click "Restart Now".
  • After reboot, a dialog box displays the files you selected for removal and the action taken.
  • Click Empty list and then click Continue to re-scan your computer a second time to ensure everything was cleaned.
  • When done, go to Start > Run and type or copy/paste: %temp%\sarscan.log
  • This should open the log from the rootkit scan. Please post this log in your next reply. If you have a problem, you can find sarscan.log in C:\Documents and Settings\<username>\Local Settings\Temp\.
Note: If the scan is performed while the computer is in use, false positives may appear in the scan results. This is caused by files or registry entries being deleted, including temporary files being deleted automatically.

Good luck, rigel

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith





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