BleepingComputer.com: Computer freezes and browser redirects

I am using a Dell Mini 10. I have recently noticed that sometimes the computer gets stuck on the blue welcome screen of windows xp, shows only the desktop, or simply slows down drastically to the point of 100% memory usage. Moreover, when I am browsing the internet, the websites sometimes redirect themselves to a search engine that I have never heard of.

I ran Malwarebytes and found nothing. I ran Spybot S&D, found 4 worms/malwares/etc, and got rid of them. I ran an AVG scan and found nothing. Because none of these programs solved the problem, I tried using system restore. However, the computer freezes on the screen that says "Windows is shutting down." I found it odd that the system restore point was as far back as May 2008, which is a year before I even got the computer.

Any help would be greatly appreciated. Thank you.

Please post the results of your last MBAM scan for review (even if nothing was found).

To retrieve the Malwarebytes Anti-Malware scan log information, launch MBAM.

• Click the Logs Tab at the top.
  
• The log will be named by the date of scan in the following format: mbam-log-date(time).txt
  -- If you have previously used MBAM, there may be several logs showing in the list.
  
• Click on the log name to highlight it.
  
• Go to the bottom and click on Open.
  
• The log should automatically open in notepad as a text file.
  
• Go to Edit and choose Select all.
  
• Go back to Edit and choose Copy or right-click on the highlighted text and choose Copy from there.
  
• Come back to this thread, click Add Reply, then right-click and choose Paste.
  
• Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.

Logs are saved to the following locations:
-- XP: C:\Documents and Settings\<Username>\Application Data\Malwarebytes\Malwarebytes' Anti-Malware\Logs\mbam-log-yyyy-mm-dd
-- Vista, Windows 7, 2008: C:\ProgramData\Malwarebytes\Malwarebytes' Anti-Malware\Logs\mbam-log-yyyy-mm-dd


Please download the TDSS Rootkit Removing Tool (TDSSKiller.zip) and save it to your Desktop. <-Important!!!
Be sure to print out and follow all instructions for performing a scan or refer to these instructions with screenshots.

• Extract (unzip) the file to your desktop and make sure TDSSKiller.exe (the contents of the zipped file) is on the Desktop itself, not within a folder on the Desktop. Vista/Windows 7 users refer to these instructions if you're unsure how to unzip a file.
  
• If you don't have an extracting program, you can download TDSSKiller.exe and use that instead.
  
• Double-click on TDSSKiller.exe to run the tool for known TDSS variants.
  Vista/Windows 7 users right-click and select Run As Administrator.

• When the program opens, click the Start Scan button.
  
• Do not use the computer during the scan
  
• If the scan completes with nothing found, click Close to exit.
  
• If malicious objects are found, they will show in the Scan results - Select action for found objects and offer three options.
  
• Ensure Cure is selected, then click Continue > Reboot now to finish the cleaning process.<- Important!!
  Note: If 'Suspicious' objects are detected, you will be given the option to Skip or Quarantine. Skip will be the default selection.
  
• A log file named TDSSKiller_version_date_time_log.txt will be created and saved to the root directory (usually Local Disk C:).
  
• Copy and paste the contents of that file in your next reply.

-- If TDSSKiller does not run, try renaming it. To do this, right-click on TDSSKiller.exe, select Rename and give it a random name with the .com file extension (i.e. 123abc.com). If you do not see the file extension, please refer to these instructions. In some cases it may be necessary to redownload TDSSKiller and randomly rename it before downloading and saving to the computer.

-- For any files detected as 'Suspicious' (except those identified as Forged to be cured after reboot) get a second opinion by submitting to Jotti's virusscan or VirusTotal. In the "File to upload & scan" box, browse to the location of the suspicious file and submit (upload) it for scanning/analysis.


Please download Norman Malware Cleaner and save to your desktop.
alternate download link
If you previously used Norman, delete that version and download it again as the tool is frequently updated!

• Be sure to read all the information Norman provides on that same page.
  
• Double-click on Norman_Malware_Cleaner.exe to start. Vista/Windows 7 users right-click and select Run As Administrator.
  The tool is very slow to load as it uses a special driver. This is normal so please be patient.
  
• Read the End User License Agreement and click the Accept button to open the scanning window.
  
• Click Start Scan to begin.
  
• In some cases Norman Malware Cleaner may require that you restart the computer to completely remove an infection. If prompted, reboot to ensure that all infections are removed.
  
• After the scan has finished, a log file a log file named NFix_date_time (i.e. NFix_2009-06-22_07-08-56.log) will be created on your desktop with the results.
  
• Copy and paste the contents of that file in your next reply.

-- Note: If you need to scan a usb flash drives or other removable drives not listed, use the Add button to browse to the drives location, click on the drive to highlight and choose Ok.

This post has been edited by quietman7: 02 December 2010 - 11:54 PM