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Explorer infected?


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2 replies to this topic

#1 Maieth (Rich)

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Posted 26 May 2009 - 05:44 AM

Hi guys

Becoming worried by this alert that I'm getting most days on start-up:

Posted Image

I'm operating XP home, protected by 'AVG Anti-Virus plus Firewall' version 8.5.322
I began to get some viruses pop up after AVG was updated to the current version (I was on v.7 so upgraded due to the ceasing updates), but this one has only appeared more recently. I can get no more information on the virus than the vague name, 'win32/Heur' and virus scans do not pick up anything.

I know a flash pen of mine recently picked up a virus from somewhere, but this was cleaned by the techy at work and is now fine.
Worried that I have somethign nasty hiding in explorer, and although there is no damage to my system yet, it's not a message I want to keep seeing.

Any thoughts?

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#2 quietman7

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Posted 26 May 2009 - 09:39 AM

Anytime you come across a suspicious file for which you cannot find any information about, the file has a legitimate name but is not located where it is supposed to be, or you want a second opinion, submit it to Jotti's virusscan or VirusTotal. In the "File to upload & scan" box, click the "browse" button and locate the following file:
C:\WINDOWS\System32\nmdfgds1.dll <- this file
Click "Open", then click the "Submit" button.
-- Post back with the results of the file analysis in your next reply.

Please download Malwarebytes Anti-Malware (v1.36) and save it to your desktop.
alternate download link 1
alternate 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.
  • 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.
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#3 iisjman07

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Posted 26 May 2009 - 09:58 AM

Don't know if it helps but PrevX say:

http://www.prevx.com/filenames/423825869584501986-X1/NMDFGDS1.DLL.html

and every other google results says something about an infection...

Edited by iisjman07, 26 May 2009 - 10:00 AM.





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