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Windows XP Hangs During Virus Scan / Defrag


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#1 Pacs

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Posted 07 June 2011 - 10:35 PM

Hi. I'm working on a PC for a friend. He complained that he had a malware problem. I've ran Malwarebytes but it would freeze and hang the system about 50% on the way through. I disabled his antivirus (AVG Free) and it seemed to do the trick. I got a few hits, but nothing that looked too serious. I decided to uninstall AVG and reinstall the new version. It too would hang about halfway through, at a different file each time. Same thing with defrag. I Uninstalled AVG and defrag still hangs. I can't seem to boot into Safe Mode as well. I keep getting a resolution error on both my LCD monitors for SafeMode. One monitor is posting a very abnormal range. Something like 35.5hz and a very very low resolution. I still can't get to the desktop with it. I'm out of ideas guys.

Currently the system has no antivirus. It is not connected to the internet, but it can be and the connection works fine. I can browse with no redirects. The system seems to be quick and responsive. It is running XP Serice Pack 3 with all Windows Updates installed. The only other program that I have ran is CCleaner. Thanks.

Edited by hamluis, 08 June 2011 - 07:57 AM.
Moved from XP to Am I Infected.


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#2 cryptodan

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Posted 10 June 2011 - 05:00 AM

Can you post the logs from Malwarebytes?


Regarding CCleaner:

Bleeping Computer DOES NOT recommend the use of registry cleaners/optimizers for several reasons:

• Registry cleaners are extremely powerful applications that can damage the registry by using aggressive cleaning routines and cause your computer to become unbootable.

The Windows registry is a central repository (database) for storing configuration data, user settings and machine-dependent settings, and options for the operating system. It contains information and settings for all hardware, software, users, and preferences. Whenever a user makes changes to settings, file associations, system policies, or installed software, the changes are reflected and stored in this repository. The registry is a crucial component because it is where Windows "remembers" all this information, how it works together, how Windows boots the system and what files it uses when it does. The registry is also a vulnerable subsystem, in that relatively small changes done incorrectly can render the system inoperable. For a more detailed explanation, read Understanding The Registry.

• Not all registry cleaners are created equal. There are a number of them available but they do not all work entirely the same way. Each vendor uses different criteria as to what constitutes a "bad entry". One cleaner may find entries on your system that will not cause problems when removed, another may not find the same entries, and still another may want to remove entries required for a program to work.

• Not all registry cleaners create a backup of the registry before making changes. If the changes prevent the system from booting up, then there is no backup available to restore it in order to regain functionality. A backup of the registry is essential BEFORE making any changes to the registry.

• Improperly removing registry entries can hamper malware disinfection and make the removal process more difficult if your computer becomes infected. For example, removing malware related registry entries before the infection is properly identified can contribute to system instability and even make the malware undetectable to removal tools.

• The usefulness of cleaning the registry is highly overrated and can be dangerous. In most cases, using a cleaner to remove obsolete, invalid, and erroneous entries does not affect system performance but it can result in "unpredictable results".

Unless you have a particular problem that requires a registry edit to correct it, I would suggest you leave the registry alone. Using registry cleaning tools unnecessarily or incorrectly could lead to disastrous effects on your operating system such as preventing it from ever starting again. For routine use, the benefits to your computer are negligible while the potential risks are great.

#3 Pacs

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Posted 10 June 2011 - 12:59 PM

Yes, I will post the Malwarebytes log when I get home from work tonight. There were no changes in the systems behavior after running CCleaner. I only removed registries for uninstalled programs that were no longer on the system.

#4 Pacs

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Posted 10 June 2011 - 10:24 PM

Malwarebytes' Anti-Malware 1.50.1.1100
www.malwarebytes.org

Database version: 6697

Windows 5.1.2600 Service Pack 3
Internet Explorer 8.0.6001.18702

5/28/2011 11:14:45 PM
mbam-log-2011-05-28 (23-14-45).txt

Scan type: Full scan (C:\|)
Objects scanned: 230911
Time elapsed: 32 minute(s), 33 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 2
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 1
Files Infected: 13

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Stats\{1D4DB7D2-6EC9-47A3-BD87-1E41684E07BB} (Adware.MyWebSearch) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{A078F691-9C07-4AF2-BF43-35E79EECF8B7} (Adware.Softomate) -> Quarantined and deleted successfully.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
c:\program files\anti-virus professional (Rogue.AntiVirusProfessional) -> Quarantined and deleted successfully.

Files Infected:
c:\system volume information\_restore{138d030d-8dfc-4c24-9a3d-4998e7bd3fb8}\RP1305\A0108671.dll (Adware.ClickPotato) -> Quarantined and deleted successfully.
c:\system volume information\_restore{138d030d-8dfc-4c24-9a3d-4998e7bd3fb8}\RP1305\A0108672.exe (Adware.ClickPotato) -> Quarantined and deleted successfully.
c:\system volume information\_restore{138d030d-8dfc-4c24-9a3d-4998e7bd3fb8}\RP1305\A0108673.dll (Adware.ClickPotato) -> Quarantined and deleted successfully.
c:\system volume information\_restore{138d030d-8dfc-4c24-9a3d-4998e7bd3fb8}\RP1305\A0108674.dll (Adware.ClickPotato) -> Quarantined and deleted successfully.
c:\system volume information\_restore{138d030d-8dfc-4c24-9a3d-4998e7bd3fb8}\RP1305\A0108675.exe (Adware.ClickPotato) -> Quarantined and deleted successfully.
c:\system volume information\_restore{138d030d-8dfc-4c24-9a3d-4998e7bd3fb8}\RP1305\A0108676.dll (Adware.ClickPotato) -> Quarantined and deleted successfully.
c:\system volume information\_restore{138d030d-8dfc-4c24-9a3d-4998e7bd3fb8}\RP1305\A0108677.dll (Adware.ClickPotato) -> Quarantined and deleted successfully.
c:\WINDOWS\0101120101465254.xe (KoobFace.Trace) -> Quarantined and deleted successfully.
c:\WINDOWS\0101120101465050.xe (KoobFace.Trace) -> Quarantined and deleted successfully.
c:\WINDOWS\bk23567.dat (KoobFace.Trace) -> Quarantined and deleted successfully.
c:\WINDOWS\fdgg34353edfgdfdf (KoobFace.Trace) -> Quarantined and deleted successfully.
c:\WINDOWS\mmsmark2.dat (KoobFace.Trace) -> Quarantined and deleted successfully.
c:\program files\anti-virus professional\noadware4_100809.na (Rogue.AntiVirusProfessional) -> Quarantined and deleted successfully.

#5 cryptodan

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Posted 11 June 2011 - 01:02 PM

Follow this guide: http://www.bleepingcomputer.com/virus-removal/remove-pc-security-guardian

#6 Pacs

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Posted 13 June 2011 - 12:44 AM

There were no traces of the remains of the PC Security Guardian. While I was following the guide I actually got a forced reboot which posted an error log. I smacked myself in the face. Temperature warning. Sure enough the CPU fan was shot. All is well now.

#7 cryptodan

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Posted 13 June 2011 - 01:12 AM

thanks for posting back.

#8 Pacs

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Posted 13 June 2011 - 01:59 AM

Thank you as well:)




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