Bamital infection?

Discussion in 'Malware Help (A Specialist Will Reply)' started by ravila, Aug 21, 2010.

  1. ravila

    ravila Private E-2

    i got a norton alert that it had prevent an attack and it need to be removed. I followed the directions and it was something like bamital except it had an exclamation point, happend a few hours ago now. i followed the directions and thne it sadi it could not be removed. sent norton a report. nothing back yet. did two more scans it said everything was ok but still need to remove it. I didn't have any icons or a way to disable the system restore, did another scan and the computer shut down after. went to srat and now it contunues to recycle through the start up, cant start in safe mode. please help.
    Thank you:cry
     
  2. chaslang

    chaslang MajorGeeks Admin - Master Malware Expert Staff Member

    Welcome to Major Geeks!
    So you are now saying that Norton did try to remove something and the result is that your computer will not boot up properly?

    • Exactly how far does it get when you boot up? Do you get to the loging screen or further?
    • Have you tried powering off your PC for a few minutes and then turning it back on? If not then try it to see what happens.
    • Exactly what did you do on your own to your PC? What exact instructions were you following? What files, folders or registry keys did you touch or delete?
     
  3. ravila

    ravila Private E-2

    I tried to follow these instructions but it was for a issues that seemed to have a different name the boot up only goes to the windows xp logo then restarts. didnt do anything except runs norton scans and attempt the removal throught it's prompts but it at the end said it couldn't do it. tried the power thing still the same.
    thanks

    Systems Affected: Windows 98, Windows 95, Windows XP, Windows Me, Windows Vista, Windows NT, Windows Server 2003, Windows 2000

    The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.

    Disable System Restore (Windows Me/XP).
    Update the virus definitions.
    Run a full system scan.
    Delete any values added to the registry.

    For specific details on each of these steps, read the following instructions.

    1. To disable System Restore (Windows Me/XP)
    If you are running Windows Me or Windows XP, we recommend that you temporarily turn off System Restore. Windows Me/XP uses this feature, which is enabled by default, to restore the files on your computer in case they become damaged. If a virus, worm, or Trojan infects a computer, System Restore may back up the virus, worm, or Trojan on the computer.

    Windows prevents outside programs, including antivirus programs, from modifying System Restore. Therefore, antivirus programs or tools cannot remove threats in the System Restore folder. As a result, System Restore has the potential of restoring an infected file on your computer, even after you have cleaned the infected files from all the other locations.

    Also, a virus scan may detect a threat in the System Restore folder even though you have removed the threat.

    For instructions on how to turn off System Restore, read your Windows documentation, or one of the following articles:

    How to disable or enable Windows Me System Restore
    How to turn off or turn on Windows XP System Restore

    Note: When you are completely finished with the removal procedure and are satisfied that the threat has been removed, reenable System Restore by following the instructions in the aforementioned documents.

    For additional information, and an alternative to disabling Windows Me System Restore, see the Microsoft Knowledge Base article: Antivirus Tools Cannot Clean Infected Files in the _Restore Folder (Article ID: Q263455).

    2. To update the virus definitions
    Symantec Security Response fully tests all the virus definitions for quality assurance before they are posted to our servers. There are two ways to obtain the most recent virus definitions:

    Running LiveUpdate, which is the easiest way to obtain virus definitions.

    If you use Norton AntiVirus 2006, Symantec AntiVirus Corporate Edition 10.0, or newer products, LiveUpdate definitions are updated daily. These products include newer technology.

    If you use Norton AntiVirus 2005, Symantec AntiVirus Corporate Edition 9.0, or earlier products, LiveUpdate definitions are updated weekly. The exception is major outbreaks, when definitions are updated more often.



    Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted daily. You should download the definitions from the Symantec Security Response Web site and manually install them.

    The latest Intelligent Updater virus definitions can be obtained here: Intelligent Updater virus definitions. For detailed instructions read the document: How to update virus definition files using the Intelligent Updater.

    3. To run a full system scan

    Start your Symantec antivirus program and make sure that it is configured to scan all the files.

    For Norton AntiVirus consumer products: Read the document: How to configure Norton AntiVirus to scan all files.

    For Symantec AntiVirus Enterprise products: Read the document: How to verify that a Symantec Corporate antivirus product is set to scan all files.



    Run a full system scan.
    If any files are detected, follow the instructions displayed by your antivirus program.
    Important: If you are unable to start your Symantec antivirus product or the product reports that it cannot delete a detected file, you may need to stop the risk from running in order to remove it. To do this, run the scan in Safe mode. For instructions, read the document, How to start the computer in Safe Mode. Once you have restarted in Safe mode, run the scan again.
    After the files are deleted, restart the computer in Normal mode and proceed with the next section.

    Warning messages may be displayed when the computer is restarted, since the threat may not be fully removed at this point. You can ignore these messages and click OK. These messages will not appear when the computer is restarted after the removal instructions have been fully completed. The messages displayed may be similar to the following:

    Title: [FILE PATH]
    Message body: Windows cannot find [FILE NAME]. Make sure you typed the name correctly, and then try again. To search for a file, click the Start button, and then click Search.

    4. To delete the value from the registry
    Important: Symantec strongly recommends that you back up the registry before making any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify the specified subkeys only. For instructions refer to the document: How to make a backup of the Windows registry.

    Click Start > Run.
    Type regedit
    Click OK.

    Note: If the registry editor fails to open the threat may have modified the registry to prevent access to the registry editor. Security Response has developed a tool to resolve this problem. Download and run this tool, and then continue with the removal.


    Navigate to and delete the following registry entries:


    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\AppCertDlls\"AppSecDll" = "%UserProfile%\Local Settings\Application Data\Windows Server\[SIX RANDOM LETTERS].dll"
    HKEY_CURRENT_USER\Software\[TEN RANDOM LETTERS]\"[TEN RANDOM LETTERS]" = "[BINARY DATA]"
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sr\Parameters\"FirstRun" = "1"


    Restore the following registry entries to their previous values, if required:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore\"DisableSR" = "1"


    Exit the Registry Editor.

    Note: If the risk creates or modifies registry subkeys or entries under HKEY_CURRENT_USER, it is possible that it created them for every user on the compromised computer. To ensure that all registry subkeys or entries are removed or restored, log on using each user account and check for any HKEY_CURRENT_USER items listed above.
     
  4. chaslang

    chaslang MajorGeeks Admin - Master Malware Expert Staff Member

    You could have just inserted a link to the Symantec instructions. ;)


    What version of Windows are you using? If Windows XP, you next step shoud be to try the below ( assuming that you have not lost all of your System Restore points by following Symantec's foolish instructions ).

    http://support.microsoft.com/default.aspx?scid=kb;en-us;307545&sd=tech
     
  5. ravila

    ravila Private E-2

    Sorry bout that:-o well i didn't get a chance to disable system restore.. and I don't get any of the messages that are refedred to in the article..I'll give it a shot and see what happens and now I have to find my xp disc
     
  6. ravila

    ravila Private E-2

    ok just for chuckles let's say i can't find my xp disc and only have the product key.
     
  7. chaslang

    chaslang MajorGeeks Admin - Master Malware Expert Staff Member

    Then the obvious answer is that is of no use to you. You need the disk to try and run the Recovery Console or to run a Repair.

    You may want to try using another PC to make one of the Rescue CDs listed in the Free Special Bootable CDs To Create section (at the end of the link) of the below link. Perhaps running one of these could help to get you started or you may end up needing to use one to recover any important data before ultimately having to do a reinstall:

    Alternative Scans

    A similar procedure as mentioned in the Microsoft link can be performed by using one of these bootable CDs. You just have to perform the same kind of procedures but will not be using the Windows CD's Recovery Console to do it.
     
  8. ravila

    ravila Private E-2

    thought so anyway I'm running the AVG scan and its finding the infected but Im a bit nervous about rewriting files. Please advise.
    Thank you
     
  9. ravila

    ravila Private E-2

    here is a pic of the report I got the idea from here
     

    Attached Files:

  10. chaslang

    chaslang MajorGeeks Admin - Master Malware Expert Staff Member

    While booted up with this boot disk, you need to see if you can replace the infect ntdisk.sys file with a valid copy from the C:\Windows\system32\dllcache folder.
     
  11. ravila

    ravila Private E-2

    feelin very rookie like now but where would i find it and what woukd it look like
     
  12. chaslang

    chaslang MajorGeeks Admin - Master Malware Expert Staff Member

    In the folder I already mentioned
    There should be a backup of the original clean file there that you can use to overwrite the infected one that AVG is showing you in the C:\Windows\system32\drivers folder.


    So basically what I'm saying is that you need to do a copy command like the below

    copy C:\Windows\system32\dllcache\ntdisk.sys C:\Windows\system32\drivers\ntdisk.sys

    The above would be the exact command to run if you had your Windows boot CD and booted to the Recovery Console. I'm not sure of the syntax to use with the AVG boot disk you made but I would expect they have given you a feature were you can copy files from the Linux type environment. They have a program named Midnight Commander which will provide two window panes where you should be able to copy files between the two panes. You just need to navigate to the appropriate folder in each window pane first and then select the file and copy it .
     
  13. ravila

    ravila Private E-2

    ok i think i'm screwd..i went to reset the original hi performance seting now it is to the point it's asking me for a floppy that i don't have and i can't get out of that prompt..can I jut start all over and reinstall everything?:-o
     
  14. chaslang

    chaslang MajorGeeks Admin - Master Malware Expert Staff Member

    I don't know what you are referring to???

    Reinstalling is always an option if you have the reinstall CDs or if you have a Recovery Partition to use to get back to factory ship state. It's your decision how you wish to continue; however, earlier you said you do not have the CD.
     
  15. ravila

    ravila Private E-2

    oh in the bios seting the is an option to reset the "high performance setting but when I did that it asked for a floppy I don't have..now I'm running now form ubuntu and my pc seems to be performing fine..but I thins I would like to go back to xp. I'm VERY confused. sorry
     
  16. chaslang

    chaslang MajorGeeks Admin - Master Malware Expert Staff Member

    Why are you touching this? It has nothing to do with malware removal and it is not something I asked you to do.

    Do you mean that you uninstall XP and installed Ubuntu? If so, how are you going to reinstall XP without the CD?
     
  17. ravila

    ravila Private E-2

    I'm desperate so I tried it and I couldn't get to the files you were talking about C:\Windows\system32\dllcache\ntdisk.sys C:\Windows\system32\drivers\ntdisk.sys because it wasn't seeing the drives..No I didn't uninstall xp I'm running ubuntu from the cd.:confused
     
  18. chaslang

    chaslang MajorGeeks Admin - Master Malware Expert Staff Member

    You were seeing them previously. Look at the snapshot you posted which showed them. What did you change that is preventing you from seeing the drives and files now? I cannot help you with things when I have no idea what you have been changing. What worked before should still work unless you did things on your own to change them. If you have been making changes to your BIOS then I probably cannot help you since I don't know everything that you changed nor do I know how it was set to begin with.
     

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