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Bck/vb.xb


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8 replies to this topic

#1 DBlackbeard

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Posted 20 September 2008 - 03:57 PM

Hi there - my pc's been infected with a virus called bck/vb.xb. There is very little info available on this virus and all anti-virus protection does is detect the virus, but does not dis-infect it. I've tried several methods to remove it but all to no avail. It is slowing down my pc quite substantialy. Can anyone help?

Best regards, Dean

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#2 quietman7

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Posted 20 September 2008 - 06:49 PM

What program is alerting you to the infection?
Did it provide a specific file name associated with this malware threat(s) and if so, where is it located (full file path) at on your system? Each security vendor uses their own naming conventions to identify various types of malware.
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#3 DBlackbeard

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Posted 21 September 2008 - 04:43 AM

Hi there - thanks for the reply. The new Panda Antivirus + Firewall is detecting the malware. Is prompts saying 'virus detected: Bck/VB.XB'. It detects 5 instances of the malware and instead of disinfecting or eliminating the virus like it does with other malware, it simply says 'notified'. it is located in:

D:\System Volume Information\_restore{C9CFF153-4F75-472E-94D8-B348E02DC438}\RP2\A0001266_exe.vir[327882R2FWJFW\NirCmdC.cfexe]

?? Not quite sure what to make of it.

Some one suggested that it was in my system restore temporary folder, but removing them didnt kill the malware

Best Regards,

Edited by DBlackbeard, 21 September 2008 - 04:47 AM.


#4 quietman7

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Posted 21 September 2008 - 06:03 AM

The infected RP***\A00*****.exe/.dll file(s) identified by your scan are in the System Volume Information Folder (SVI) which is a part of System Restore. This is the feature that allows you to set points in time to roll back your computer to a clean working state. The SVI folder is protected by permissions that only allow the system to have access and is hidden by default unless you have reconfigured Windows to show it.

System Restore will back up the good as well as the bad files so when malware is present on the system it gets included in any restore points as an A00***** file. When you scan your system with anti-virus or anti-malware tools, you may receive an alert or notification that a virus was found in the SVI folder (System Restore points) but the anti-virus software was unable to remove it. Since the SVI folder is a protected directory, most scanning tools cannot access it to disinfect or delete these files. If not removed, they sometimes can reinfect your system if you accidentally use an old restore point. Also see How antivirus software and System Restore work together.

To remove these file(s), the easiest thing to do is Create a New Restore Point to enable your computer to "roll-back" to a clean working state and use Disk Cleanup to remove all but the most recent restore point.
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#5 DBlackbeard

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Posted 21 September 2008 - 10:13 AM

Hi there - thanks for the reply. I've tried doing the steps you sent once before and with no result. I tried again just to make sure and Panda still detects the virus.

Dunno if its of any significance but Windows is installed on my c: drive, but panda detects the virus on my d: drive?

Thanx for your help

Dean

#6 quietman7

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Posted 21 September 2008 - 12:00 PM

On the Desktop, right-click My Computer.
Select Properties and click the System Restore tab.
Click on (highlight) Local Disk [D:]
Click Settings and check the box Turn off System Restore on this drive.
Click Ok, then click Apply.
Reboot the computer.

Right-click My Computer again.
Select Properties and click the System Restore tab.
Click on (highlight) Local Disk [D:]
Click Settings and uncheck the box Turn off System Restore on this drive.
Click Ok, then click Apply.
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#7 DBlackbeard

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Posted 21 September 2008 - 05:33 PM

Have also tried that before and it didnt work - tried it again and it still doesnt work...

#8 quietman7

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Posted 21 September 2008 - 07:26 PM

Please download and scan with Dr.Web CureIt. Follow the instructions here for performing a scan in "safe mode".
-- Post the log in your next reply and let me know how your computer is running.
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#9 DBlackbeard

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Posted 23 September 2008 - 02:04 PM

Hi. heres the log. Cant tell just yet if theres anychange in pc's performance. Will let you know

-ComboFix.exe\327882R2FWJFW\psexec.cfexe;D:\Installation Files\Virus Stuff\ComboFix\ComboFix.exe;Program.PsExec.171;;
-ComboFix.exe;D:\Installation Files\Virus Stuff\ComboFix;Archive contains infected objects;Moved.;
-A0000009_exe.vir\327882R2FWJFW\psexec.cfexe;D:\System Volume Information\_restore{C9CFF153-4F75-472E-94D8-B348E02DC438}\RP1\A0000009_exe.vir;Program.PsExec.171;;
-A0000009_exe.vir;D:\System Volume Information\_restore{C9CFF153-4F75-472E-94D8-B348E02DC438}\RP1;Archive contains infected objects;Moved.;
-A0001072_exe.vir\327882R2FWJFW\psexec.cfexe;D:\System Volume Information\_restore{C9CFF153-4F75-472E-94D8-B348E02DC438}\RP2\A0001072_exe.vir;Program.PsExec.171;;
-A0001072_exe.vir;D:\System Volume Information\_restore{C9CFF153-4F75-472E-94D8-B348E02DC438}\RP2;Archive contains infected objects;Moved.;
-A0001077_exe.vir\327882R2FWJFW\psexec.cfexe;D:\System Volume Information\_restore{C9CFF153-4F75-472E-94D8-B348E02DC438}\RP2\A0001077_exe.vir;Program.PsExec.171;;
-A0001077_exe.vir;D:\System Volume Information\_restore{C9CFF153-4F75-472E-94D8-B348E02DC438}\RP2;Archive contains infected objects;Moved.;
-A0001266_exe.vir\327882R2FWJFW\psexec.cfexe;D:\System Volume Information\_restore{C9CFF153-4F75-472E-94D8-B348E02DC438}\RP2\A0001266_exe.vir;Program.PsExec.171;;
-A0001266_exe.vir;D:\System Volume Information\_restore{C9CFF153-4F75-472E-94D8-B348E02DC438}\RP2;Archive contains infected objects;Moved.;
-A0001267_exe.vir\327882R2FWJFW\psexec.cfexe;D:\System Volume Information\_restore{C9CFF153-4F75-472E-94D8-B348E02DC438}\RP2\A0001267_exe.vir;Program.PsExec.171;;
-A0001267_exe.vir;D:\System Volume Information\_restore{C9CFF153-4F75-472E-94D8-B348E02DC438}\RP2;Archive contains infected objects;Moved.;
-A0019851.exe\327882R2FWJFW\psexec.cfexe;D:\System Volume Information\_restore{F89CC176-5B25-4F07-8898-B75AED79DEE2}\RP69\A0019851.exe;Program.PsExec.171;;
-A0019851.exe;D:\System Volume Information\_restore{F89CC176-5B25-4F07-8898-B75AED79DEE2}\RP69;Archive contains infected objects;Moved.;




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