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Guard Reports Infection, But Scan Comes Up Clean


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#1 funnytim

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Posted 16 August 2008 - 07:48 PM

Hi,

I'm using Antivir (free version).

Yesterday and today, the guard keeps reporting "a virus or unwanted program was found"
it's a "TR/Cyrpt.XPACK.Gen Trojan"

There's 2 dialogs, one a DLL file in the C:\Windows\System32 folder, and another is in my IE Cache folder :S.

Have tried emptying my IE and Firefox Cache, and have done a Computer scan with Antivir, which reports the computer as clean.
The detection dialog appears randomly every once in a while. I have quarantined all infections so far.


Here's a exported list of the recent events from Antivir:

Exported events:

16/08/2008 16:02 [Guard] Malware found
Virus or unwanted program 'TR/Crypt.XPACK.Gen [trojan]'
detected in file 'C:\WINDOWS\system32\ddcArQJa.dll.
Action performed: Move file to quarantine

16/08/2008 16:02 [Guard] Malware found
Virus or unwanted program 'TR/Crypt.XPACK.Gen [trojan]'
detected in file 'C:\Documents and Settings\Timothy Leung\Local
Settings\Temporary Internet Files\Content.IE5\VJHIR59A\cntr[1].
Action performed: Move file to quarantine

16/08/2008 15:03 [Guard] Malware found
Virus or unwanted program 'TR/Crypt.XPACK.Gen [trojan]'
detected in file 'C:\Documents and Settings\Timothy Leung\Local
Settings\Temporary Internet Files\Content.IE5\BH7RZ4R3\cntr[1].
Action performed: Move file to quarantine

16/08/2008 15:03 [Guard] Malware found
Virus or unwanted program 'TR/Crypt.XPACK.Gen [trojan]'
detected in file 'C:\WINDOWS\system32\mlJCTJDs.dll.
Action performed: Move file to quarantine

16/08/2008 14:02 [Guard] Malware found
Virus or unwanted program 'TR/Crypt.XPACK.Gen [trojan]'
detected in file 'C:\Documents and Settings\Timothy Leung\Local
Settings\Temporary Internet Files\Content.IE5\RB0DSNO5\cntr[1].
Action performed: Move file to quarantine

16/08/2008 14:02 [Guard] Malware found
Virus or unwanted program 'TR/Crypt.XPACK.Gen [trojan]'
detected in file 'C:\WINDOWS\system32\iiffCSlI.dll.
Action performed: Move file to quarantine

16/08/2008 1:52 [Guard] Malware found
Virus or unwanted program 'TR/Crypt.XPACK.Gen [trojan]'
detected in file 'C:\Documents and Settings\Timothy Leung\Local
Settings\Temporary Internet Files\Content.IE5\0VFFVHEO\cntr[1].
Action performed: Move file to quarantine

16/08/2008 1:52 [Guard] Malware found
Virus or unwanted program 'TR/Crypt.XPACK.Gen [trojan]'
detected in file 'C:\WINDOWS\system32\geBRifff.dll.
Action performed: Move file to quarantine




Help appreciated, thanks!

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#2 quietman7

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Posted 17 August 2008 - 07:59 AM

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. Reagardless 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.
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#3 funnytim

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Posted 18 August 2008 - 11:34 PM

Hm so that's what i forgot to scan..

Here's the log from Anti-Malware:

Malwarebytes' Anti-Malware 1.25
Database version: 1068
Windows 5.1.2600 Service Pack 3

9:29:13 PM 18/08/2008
mbam-log-08-18-2008 (21-29-13).txt

Scan type: Quick Scan
Objects scanned: 49385
Time elapsed: 4 minute(s), 56 second(s)

Memory Processes Infected: 1
Memory Modules Infected: 1
Registry Keys Infected: 6
Registry Values Infected: 2
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 6

Memory Processes Infected:
C:\WINDOWS\system32\wdfmgr.exe (Trojan.Agent) -> Unloaded process successfully.

Memory Modules Infected:
C:\WINDOWS\system32\ssqQIBRK.dll (Trojan.Vundo.H) -> Delete on reboot.

Registry Keys Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{493f974e-feae-459e-b770-d9262474eb97} (Trojan.Vundo.H) -> Delete on reboot.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\ssqqibrk (Trojan.Vundo.H) -> Delete on reboot.
HKEY_CLASSES_ROOT\CLSID\{493f974e-feae-459e-b770-d9262474eb97} (Trojan.Vundo.H) -> Delete on reboot.
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\umwdf (Trojan.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services\umwdf (Trojan.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\umwdf (Trojan.Agent) -> Quarantined and deleted successfully.

Registry Values Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellExecuteHooks\{493f974e-feae-459e-b770-d9262474eb97} (Trojan.Vundo.H) -> Delete on reboot.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\explorer (Trojan.Agent) -> Quarantined and deleted successfully.

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
C:\WINDOWS\system32\ssqQIBRK.dll (Trojan.Vundo.H) -> Delete on reboot.
C:\WINDOWS\system32\cbXPjKDs.dll (Trojan.Vundo.H) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\hgGyWqOh.dll (Trojan.Vundo.H) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\xxywVlIc.dll (Trojan.Vundo.H) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\wdfmgr.exe (Trojan.Agent) -> Quarantined and deleted successfully.
C:\Documents and Settings\Timothy Leung\Application Data\explorer.exe (Trojan.Agent) -> Quarantined and deleted successfully.




I did another scan after that:
"
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"

I will let you know if the Guard reports a infection.

Thanks!

Edited by funnytim, 18 August 2008 - 11:41 PM.


#4 quietman7

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Posted 19 August 2008 - 08:50 AM

How is your computer running now? Any more reports/signs of infection?
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#5 funnytim

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Posted 20 August 2008 - 01:41 AM

So far no more infection reports on Antivir..

lol I can't believe i forgot to use Anti-Malware to scan...


I will let you know if there's another report that its back/ still here.

Thanks a lot!

#6 quietman7

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Posted 20 August 2008 - 07:46 AM

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 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.
  • 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.
For Tips to protect yourself against malware and reduce the potential for re-infection, be sure to read:
• "Simple and easy ways to keep your computer safe".
• "How did I get infected?, With steps so it does not happen again!".
• "Best Practices - Internet Safety for 2008".
• "Hardening Windows Security - Part 1 & Part 2".
• "IE Recommended Minimal Security Settings" - "How to Secure Your Web Browser".

• Avoid gaming sites, underground web pages, pirated software sites, 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 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.
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#7 funnytim

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Posted 21 August 2008 - 08:14 PM

Will do. Thanks again.

You're another reason why BC is so useful & friendly. Hopefully I'll be able to contribute back one day ;) .

#8 quietman7

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Posted 22 August 2008 - 06:58 AM

:thumbsup:
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