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Symantec keeps finding trojan horses


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#1 rxmurphy

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Posted 30 March 2009 - 10:37 AM

Hello there. I have a compaq nx7400 running windows XP 2002 sp 3. The Symantec protection constantly finds 70 or so trojan horses. I have run the virus scan and something called super antispyware, but it keeps finding these trojan horses. Can you help me?

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#2 quietman7

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Posted 30 March 2009 - 10:56 AM

Have you tried running your scans in "Safe Mode"? If not, please do so. If that does not help, then do this:

Please download Malwarebytes Anti-Malware (v1.35) and save it to your desktop.
alternate download link 1
alternate download link 2

MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you. Temporarily disable such programs or permit them to allow the changes.
  • 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 definition 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. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  • Exit MBAM when done.
Note: If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so MBAM can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.
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#3 rxmurphy

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Posted 30 March 2009 - 11:04 AM

Will try this. Will take a while, but will try all and post back. Thanks!!

#4 rxmurphy

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Posted 31 March 2009 - 02:07 PM

Here is the MalwareBytes log. Just completed, so will work for a while to see if anything is detected.

Malwarebytes' Anti-Malware 1.35
Database version: 1918
Windows 5.1.2600 Service Pack 3

3/31/2009 2:31:27 PM
mbam-log-2009-03-31 (14-31-27).txt

Scan type: Quick Scan
Objects scanned: 145991
Time elapsed: 29 minute(s), 1 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: 0
Files Infected: 1

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{28abc5c0-4fcb-11cf-aax5-21cx1c642131} (Trojan.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{28abc5c0-4fcb-11cf-aax5-21cx1c643131} (Worm.Autorun) -> Quarantined and deleted successfully.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
C:\WINDOWS\system32\systemac.dll (Trojan.Bot) -> Quarantined and deleted successfully.

#5 quietman7

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Posted 31 March 2009 - 02:22 PM

Now rescan again with MBAM but this time perform a Full Scan in normal mode and check all items found for removal. Don't forgot to check for database definition updates through the program's interface (preferable method) before scanning and to reboot afterwards. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware. When done, click the Logs tab and copy/paste the contents of the new report in your next reply.

Your database shows, 1918. Last I checked it was 1922.
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#6 rxmurphy

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Posted 01 April 2009 - 08:06 AM

Now rescan again with MBAM but this time perform a Full Scan in normal mode and check all items found for removal. Don't forgot to check for database definition updates through the program's interface (preferable method) before scanning and to reboot afterwards. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware. When done, click the Logs tab and copy/paste the contents of the new report in your next reply.

Your database shows, 1918. Last I checked it was 1922.


Here is the scan result:

Malwarebytes' Anti-Malware 1.35
Database version: 1925
Windows 5.1.2600 Service Pack 3

4/1/2009 8:49:07 AM
mbam-log-2009-04-01 (08-49-07).txt

Scan type: Full Scan (C:\|)
Objects scanned: 237556
Time elapsed: 2 hour(s), 41 minute(s), 30 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: 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:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
C:\System Volume Information\_restore{A80475B6-CF6D-4B3A-BD21-B16C67DB5304}\RP234\A0075156.dll (Trojan.Bot) -> Quarantined and deleted successfully.

#7 quietman7

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Posted 01 April 2009 - 08:16 AM

Lets do another scan to see if we find anything else that MBAM may have missed.

Please download ATF Cleaner by Atribune & save it to your desktop. DO NOT use yet.
alternate download link

Please download and install 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 it will not start, go to Start > All Prgrams > SUPERAntiSpyware and click on Alternate Start.
  • 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".

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".

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.
If you cannot boot into safe mode, then perform your scans in normal mode.
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#8 rxmurphy

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Posted 01 April 2009 - 08:41 AM

[quote name='quietman7' date='Apr 1 2009, 09:16 AM' post='1203185']
Lets do another scan to see if we find anything else that MBAM may have missed.

Please download ATF Cleaner by Atribune & save it to your desktop. DO NOT use yet.
alternate download link

OK, I downloaded the ATF cleaner, but when I boot up in safe mode, the program is not on my desktop. Shall I go ahead and run it normally (not safe mode?)

Never mind, found it in safe, running ATF now.

Edited by rxmurphy, 01 April 2009 - 08:43 AM.


#9 quietman7

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Posted 01 April 2009 - 08:59 AM

After rebooting into safe mode, when you are at the logon prompt, make sure you log in as the same user account which you used to download/save/install the file (program). If not, you may not be able to find the file on your desktop. If your still having problems finding it, go back to normal mode and move it to the root of the system drive (usually C:\) where you will be able to easily locate it when going into safe mode.

If for some reason you still cannot find it, then run the program in normal mode.
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#10 rxmurphy

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Posted 01 April 2009 - 10:01 AM

After rebooting into safe mode, when you are at the logon prompt, make sure you log in as the same user account which you used to download/save/install the file (program). If not, you may not be able to find the file on your desktop. If your still having problems finding it, go back to normal mode and move it to the root of the system drive (usually C:\) where you will be able to easily locate it when going into safe mode.

If for some reason you still cannot find it, then run the program in normal mode.

Here is the superantispyware scan log, done in safe mode. I may be clean??

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

Generated 04/01/2009 at 10:44 AM

Application Version : 4.26.1000

Core Rules Database Version : 3816
Trace Rules Database Version: 1770

Scan type : Complete Scan
Total Scan Time : 00:54:50

Memory items scanned : 334
Memory threats detected : 0
Registry items scanned : 5865
Registry threats detected : 0
File items scanned : 23907
File threats detected : 0

#11 quietman7

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Posted 01 April 2009 - 10:30 AM

How is your computer running now? Are there any more reports/signs of infection?
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#12 rxmurphy

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Posted 01 April 2009 - 10:34 AM

How is your computer running now? Are there any more reports/signs of infection?

Seems to be running clean, no more pop-ups from symantec saying I have trojan horses. Will keep an eye out, thanks for the assist!! Anything you think I should be doing moving forward? I suppose frequent scanning with superantispyware, and the normal symantec virus scans?
Again, many thanks!

Edited by rxmurphy, 01 April 2009 - 11:02 AM.


#13 quietman7

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Posted 01 April 2009 - 12:01 PM

You're welcome.

If there are no more problems or signs of infection, you should Create a New Restore Point to prevent possible reinfection from an old one. Some of the malware you picked up could have been backed up, renamed and saved in System Restore. Since this is a protected directory your tools cannot access to delete these files, they sometimes can reinfect your system if you accidentally use an old restore point. Setting a new restore point AFTER cleaning your system will help prevent this and enable your computer to "roll-back" to a clean working state.

The easiest and safest way to do this is:
  • Go to Start > Programs > Accessories > System Tools and click "System Restore".
  • Choose the radio button marked "Create a Restore Point" on the first screen then click "Next". Give the R.P. a name, then click "Create". The new point will be stamped with the current date and time. Keep a log of this so you can find it easily should you need to use System Restore.
  • Then use Disk Cleanup to remove all but the most recently created Restore Point.
  • Go to Start > Run and type: Cleanmgr
  • Click "Ok". Disk Cleanup will scan your files for several minutes, then open.
  • Click the "More Options" tab, then click the "Clean up" button under System Restore.
  • Click Ok. You will be prompted with "Are you sure you want to delete all but the most recent restore point?"
  • Click Yes, then click Ok.
  • Click Yes again when prompted with "Are you sure you want to perform these actions?"
  • Disk Cleanup will remove the files and close automatically.
Vista Users can refer to these links: Create a New Restore Point and Disk Cleanup.

Tips to protect yourself against malware and reduce the potential for re-infection:Avoid gaming sites, pirated software, cracking tools, keygens, and peer-to-peer (P2P) file sharing programs. They are a security risk which can make your computer susceptible to a smörgåsbord of malware infections, remote attacks, exposure of personal information, and identity theft. Many malicious worms and Trojans spread across P2P file sharing networks, gaming and underground sites. Users visiting such pages may see innocuous-looking banner ads containing code which can trigger pop-up ads and malicious Flash ads that install viruses, Trojans and spyware. Ads are a target for hackers because they offer a stealthy way to distribute malware to a wide range of Internet users. The best way to reduce the risk of infection is to avoid these types of web sites and not use any P2P applications. Read P2P Software User Advisories and Risks of File-Sharing Technology.

Keeping Autorun enabled on USB (pen, thumb, jump) and other removable drives has become a significant security risk due to the increasing number of malware variants that can infect them and transfer the infection to your computer. To learn more about this risk, please read:Many security experts recommend disabling this feature as a method of prevention. Microsoft recommends doing the same.

...Disabling Autorun functionality can help protect customers from attack vectors that involve the execution of arbitrary code by Autorun when inserting a CD-ROM device, USB device, network shares, or other media containing a file system with an Autorun.inf file...

Microsoft Security Advisory (967940): Update for Windows Autorun
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