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Vista Business And Backdoor.delf


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3 replies to this topic

#1 Revere

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Posted 23 June 2008 - 07:22 PM

Hello.

I started having major problems a couple of days ago with applications failing to startup, system becoming sluggish on start-up, etc. norton internet security wasn't working so I tried to install AVG8. That install failed and the resultant error codes led me to suspect there was a trojan lurking - which combo-fix.exe promptly found.

The logfile is attached. Anyone have some suggestions on how best to proceed at this point?

The only pop-up that had appeared was a WinPrint dialog box repeatedly telling me some software had been patched. I don't know what software it refers to. Killing the process via Task Manager would remove it until the next boot of the system. However, applications began slowing up and/or not responding at all - to the point where periodically Roxio would not even start at all and AVG wouldn't install.

The above indicates what the progress has been thus far. AVG is currently scanning and has found quite a few baddies that it will, hopefully, remove. So anyway, .. next steps?

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#2 boopme

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Posted 23 June 2008 - 10:56 PM

Hello you should run this tool to completely remove Norton. This will probably fix the AVG issue also.
Download and run the Norton Removal Tool

Next please run this scan, Run as Administrator

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 Download_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 and you may be prompted to restart your computer. (see Note below)
  • 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 will be presented with 1 of 2 prompts. Click OK to either and let MBAM proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot will prevent MBAM from removing all the malware.
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#3 Revere

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Posted 25 June 2008 - 12:16 AM

MBAM only found one item. I ran the uninstaller tool from Norton and was then able to install AVG - which found quite a few other items. That was before I had received this reply last evening.

The system is already beginning to respond much better and is much more stable now as well. The log for MBAM is attached.

++++++++++++++++
Malwarebytes' Anti-Malware 1.18
Database version: 884

12:13:11 AM 6/25/2008
mbam-log-6-25-2008 (00-13-11).txt

Scan type: Quick Scan
Objects scanned: 37733
Time elapsed: 3 minute(s), 40 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: 1
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:
C:\WINDOWS\System32\drivers\downld (Trojan.Agent) -> Quarantined and deleted successfully.

Files Infected:
(No malicious items detected)

#4 quietman7

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Posted 25 June 2008 - 08:46 AM

...as then able to install AVG - which found quite a few other items.

What else did AVG find?

Also I recommend you now perform an Online Virus Scan with ESET Nod32 Online Scanner <- Choose the option to Remove Threats and Scan unwanted applications. (Vista compatible but Internet Explorer must be Run as Administrator. To do this, right-click on the IE icon in the Start Menu and select "Run as administrator" from the context menu.)
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