BleepingComputer.com: C:\Windows\efidazayujupi.dll is not a valid Windows image.

Hello!

Whenever I start up my computer I am greeted with the message:

rundll32.exe error
C:\Windows\efidazayujupi.dll is not a valid Windows image.

Here's what I have attempted to fix it:
rkill
malware malbytes
running my antivirus
unchecking the box in the start up menu
cleaning out my registry with registry easy
turning the computer off hoping the problem goes away!

The computer was infected with a few trojan horses and I do believe this was one of the file names I saw. I am able to locate and see this file in the windows folder on my computer.

What can I do to clear this error? Thanks so much for any help that you can give!

Hello,welcome,I moved this from XP to the Am I Infected forum .


Let's run MBAm and get a log.
Next run MBAM (MalwareBytes):

Please download Malwarebytes Anti-Malware and save it to your desktop.

Download Link 1
Download Link 2

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. Temporarily disable such programs or permit them to allow the changes.

• Make sure you are connected to the Internet.
  
• Double-click on mbam-setup.exe to install the application.
  For instructions with screenshots, please refer to the How to use Malwarebytes' Anti-Malware Guide.
  
• 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 definition 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. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  
• Exit MBAM when done.

Note: If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so MBAM can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.

Troubleshoot Malwarebytes' Anti-Malware

Hi! Thanks for your reply. MBAM hasn't found any infected files the last couple of times I have run it. The antivirus also doesn't find anything. I can see the file in my windows folder that the error is referencing but I'm not really sure what that means! Thanks for your help.

Here's the log:

Malwarebytes' Anti-Malware 1.46
www.malwarebytes.org

Database version: 4052

Windows 5.1.2600 Service Pack 3
Internet Explorer 8.0.6001.18702

1/30/2011 1:35:45 PM
mbam-log-2011-01-30 (13-35-45).txt

Scan type: Quick scan
Objects scanned: 126019
Time elapsed: 18 minute(s), 26 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 2 things,MBAm did not update so we will run it again after this.

Let's use MBAM's FileAssassin feature to get this file efidazayujupi.dll.

Open MBAM again.

Click the More Tools tab and then the Run Tool button
Now browse to the file(s) we want to remove using the drop down box next to Look in: at the top.
Locate the file(s), click Open.
You will be prompted with a message warning: This file will be permanently deleted. Are you sure you want to continue?. Click Yes.
If removal did not require a reboot, you will receive a message indicating the file was deleted successfully, however, I recommend you reboot anyway.

Quote

Rerun MBAM (MalwareBytes) like this:

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

Please ask any needed questions,post logs and Let us know how the PC is running now.