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Computer freezes with AV scan or Internet Access :(


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3 replies to this topic

#1 knowthycomp

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Posted 18 July 2009 - 11:34 PM

Hi all,

My desktop (Win XP pro, SP 3) recently seemed to have some big issues. I downloaded some video files and the next day after using some programs and having the browser open for sometime, the computer froze. I had to restart many times and it kept happening. Then I started an AV scan with Trend Micro. The scan got stuck at one particular file (some file that was created before this happened with I compiled some VC++ program). So, I thought that file might be infected and I cut and pasted that file elsewhere. Then again the scan get stuck at another file in the same directory. If I kept the scan on for some more time the computer again froze. If I didn't include this directory in the folders to be scanned, the AV scanner doesn't show any progress at all - gets stuck at 0% progress. When I try to scan for spyware etc. using Ad-Aware or Spybot the computer again froze. So, I restarted the computer in Safe mode and did the virus scan, but the same result. I also tried to scan using AVG scanner (of course uninstalling Trend Micro), but for the same outcome - froze after some time (few hours with AVG).

After reading in some forums, I found few external AV scanning programs like Clamwin, McAfee stinger. Clamwin finally found one Trojan userinit. But it seemed like it didn't remove the file since, I could see the file. Then I found that it is a system process, so I was foolish enough and scanned using ComboFix so that it might restore the file - without anybody's advice. I could not make any head or tail of the log file. But again I didn't find any mention of userinit.exe in it. Can somebody please look at these log files and let me know what the status of my comp is ?

Note:
1. In the safe mode, if I do not open the browser or use an AV scanner to scan files, the computer did not freeze.
2. I did not find any unusual pop-ups or icon on my computer desktop. But sometimes the ethernet connection didn't seem to work even though the cable is connected and I could see the "light blinking" in the cable socket at the back of the computer. After I unplug the cable and plug it back in, the connection was on again.
3. A couple of times I got a standard Windows system tray pop-up saying that the computer does not have AV scanner, even though I could see the AV (Trend Micro) icon beside the pop-up message.

Please help me asap, I really need this computer to be fixed.

Thank you very much

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#2 garmanma

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Posted 19 July 2009 - 04:32 PM

Welcome to BC


The process of cleaning your computer may require you to temporarily disable some security programs. If you are using SpyBot Search and Destroy, please refer to Note 2 at the bottom of this page.

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. Regardless 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.

Note 2:
-- MBAM may make changes to your registry as part of its disinfection routine. If you're using other security programs that detect registry changes (like Spybot's Teatimer), they may interfere with the fix or alert you after scanning with MBAM. Please disable such programs until disinfection is complete or permit them to allow the changes. To disable these programs, please view this topic: How To Temporarily Disable Your Anti-virus, Firewall And Anti-malware Programs

Then run ATF and SAS


ATF
Please download ATF Cleaner by Atribune & save it to your desktop.
  • 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".

------------------------------------

SAS,may take a long time to scan
Please download and scan with 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. Double-click on the hyperlink for Download Installer and save SASDEFINITIONS.EXE to your desktop. Then double-click on SASDEFINITIONS.EXE to install the definitions.)
  • In the Main Menu, 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".

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.

Mark
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why won't my laptop work?

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#3 knowthycomp

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Posted 20 July 2009 - 11:22 AM

Hi garmanma,

Like you said, first I used ATF Cleaner and then MBAM. MBAM did not find any infections the log can be seen below. SAS scan log is also pasted below the MBAM log.

You probably already know that I used Combofix (after reading some of the forum posts and before posting) which might have cleaned things. Let me know if you want to look at the Combofix log.


Thank you

MBAM Scan Log

Malwarebytes' Anti-Malware 1.39
Database version: 2466
Windows 5.1.2600 Service Pack 3

7/20/2009 10:20:03 AM
mbam-log-2009-07-20 (10-20-03).txt

Scan type: Quick Scan
Objects scanned: 122199
Time elapsed: 5 minute(s), 0 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)

SUPERAntiSpyware Scan Log
http://www.superantispyware.com

Generated 07/20/2009 at 12:06 PM

Application Version : 4.26.1006

Core Rules Database Version : 4004
Trace Rules Database Version: 1944

Scan type : Complete Scan
Total Scan Time : 01:08:23

Memory items scanned : 278
Memory threats detected : 0
Registry items scanned : 16443
Registry threats detected : 0
File items scanned : 44832
File threats detected : 1

Adware.Tracking Cookie
C:\WINDOWS\system32\config\systemprofile\Cookies\system@ad.primopdf[2].txt

#4 garmanma

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Posted 20 July 2009 - 04:51 PM

topic closed

Edited by garmanma, 20 July 2009 - 04:53 PM.

Mark
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why won't my laptop work?

Having grandkids is God's way of giving you a 2nd chance because you were too busy working your butt off the 1st time around
Do not send me PMs with problems that should be posted in the forums. Keep it in the forums, so everyone benefits
Become a BleepingComputer fan: Facebook and Twitter




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