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Slow laptop, performance mostly at 100%


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#1 toblerone109

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Posted 25 April 2009 - 05:26 PM

Several days ago without me installing anything my Dell Inspiron E1505, 1 Gb RAM, Windows XP became extremely sluggish with the CPU performance mostly at 100%. I ran Norton 360, Avast and Kaspersky. Norton and Avast found couple viruses and cleaned them out. I don't Kaspersky license to I was only able to do an online scan and it came up with the following infection

Worm.Win32.AutoRun.fon

and Kaspersky's library on viruses doesn't have anything on it.

Any suggestions what to do?

Thank you!

Previously this topic was posted under Windows XP and moderator after looking into this suggested to post this topic in this forum.

Here are results of Kaspersky scan:
--------------------------------------------------------------------------------
KASPERSKY ONLINE SCANNER 7.0 REPORT
Saturday, April 25, 2009
Operating System: Microsoft Windows XP Professional Service Pack 3 (build 2600)
Kaspersky Online Scanner version: 7.0.26.13
Program database last update: Saturday, April 25, 2009 12:49:10
Records in database: 2077509
--------------------------------------------------------------------------------

Scan settings:
Scan using the following database: extended
Scan archives: yes
Scan mail databases: yes

Scan area - My Computer:
C:\
D:\
E:\

Scan statistics:
Files scanned: 145422
Threat name: 6
Infected objects: 13
Suspicious objects: 0
Duration of the scan: 10:10:49


File name / Threat name / Threats count
C:\Documents and Settings\Lana\Application Data\server.exe Infected: Worm.Win32.AutoRun.fon 1
C:\Documents and Settings\Lana\My Documents\Yahoo\marinefree.exe Infected: not-a-virus:AdWare.Win32.SaveNow.c 1
C:\Documents and Settings\Lana\My Documents\Yahoo\marinefree.exe Infected: not-a-virus:AdWare.Win32.SaveNow.af 1
C:\Documents and Settings\Lana\My Documents\Yahoo\marinefree.exe Infected: not-a-virus:AdWare.Win32.SaveNow.v 2
C:\Documents and Settings\Lana\My Documents\Yahoo\marinefree.exe Infected: not-a-virus:AdWare.Win32.NewDotNet 1
C:\Documents and Settings\Lana\My Documents\Yahoo\marinefree.exe Infected: not-a-virus:AdWare.Win32.WebHancer.320 5
C:\RECYCLER\k-1-3542-4232123213-7676767-8888886\hn.exe Infected: Worm.Win32.AutoRun.fon 1
C:\WINDOWS\server.exe Infected: Worm.Win32.AutoRun.fon 1

Edited by toblerone109, 25 April 2009 - 08:05 PM.


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#2 rigel

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Posted 25 April 2009 - 08:05 PM

First, it you have both Nortons and Avast installed as resident antivirus programs. you need to uninstall one. Have two will cause conflicts between them. Let's start with Malwarebytes

Hi and welcome to BleepingComputer :thumbsup:

The process of cleaning your computer may require temporarily disabliling 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

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith


#3 toblerone109

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Posted 26 April 2009 - 12:07 AM

I scanned laptop 3 times and every time I'm getting the same infections as below. Seems to persist.

Also, when I reboot laptop I get an error message:
Data Execution Prevention - Microsoft Windows in the title bar.
To help protect your computer Windows has closed this program.
Name: Windows Explorer
Publisher: Microsoft Corporation


4/25/2009 10:01:43 PM
mbam-log-2009-04-25 (22-01-43).txt

Scan type: Full Scan (C:\|E:\|H:\|)
Objects scanned: 227584
Time elapsed: 1 hour(s), 19 minute(s), 47 second(s)

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

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\updates (Trojan.Agent) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\updates.w (Trojan.Agent) -> Quarantined and deleted successfully.

Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Trojan.Agent) -> Data: c:\windows\server.exe -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Hijack.UserInit) -> Bad: (C:\WINDOWS\system32\userinit.exe,"C:\WINDOWS\server.exe",) Good: (userinit.exe) -> Quarantined and deleted successfully.

Folders Infected:
(No malicious items detected)

Files Infected:
C:\WINDOWS\server.exe (Trojan.Agent) -> Quarantined and deleted successfully.

Edited by toblerone109, 26 April 2009 - 04:41 PM.


#4 rigel

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Posted 26 April 2009 - 07:04 PM

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Hijack.UserInit) -> Bad: (C:\WINDOWS\system32\userinit.exe,"C:\WINDOWS\server.exe",) Good: (userinit.exe) -> Quarantined and deleted successfully.


This is a bad sign.

Lets get you moved over to the HJT forum. Please follow this guide from step (6). Post a HJT log to the HJT forum and a Team member will be along to help you as soon as possible. You may wish to post a link back to this topic to see what was discussed thus far.

If you need any help with the guide, please let me know.

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith


#5 toblerone109

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Posted 26 April 2009 - 09:39 PM

Thanks. It's here now

http://www.bleepingcomputer.com/forums/ind...=222575&hl=

#6 rigel

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Posted 27 April 2009 - 11:10 AM

Thank you for letting us know. Good luck with the cleaning!

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith





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