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Virus in System Restore ??

Discussion in 'Malware and Virus Removal Archive' started by reknaw, 2005/08/03.

  1. 2005/08/03
    reknaw

    reknaw Well-Known Member Thread Starter

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    Yesterday I switch from Norton's AV to the free edition of AVG.... today AVG is reporting a Virus (Trojan Horse) in, and I assume, all my System Restore files. There are a whole bunch similiar to :
    C:\SystemVolumeInformation\-restore{040A663B-5496-4864
    for now I put them in the AVG Virus Vault.

    In a way I'm not surprised as several times over the past 6 months I've tried System Restore on to be told that the System was "unable to restore to that date "

    Obviously Nortorn's AV didn't consider it a Virus and AVG does..... So, where do I go from here guys - any ideas ??? Is there a way to delete the System Restore files and Re-load from the XP disk ? Help would be appreciated

    :confused: :confused: :confused:
     
  2. 2005/08/03
    Christer

    Christer Geek Member Staff

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    It's not uncommon that an infected computer has "copies" of the malware in the SVI folder. To clean such a computer it is necessary to disable System Restore to clear out all the restore points (empty the SVI folder). Run a virus scan to fix the problem. Run e.g. Ad-Aware and Spybot to clear those critters. When every scan comes out clean, reenable System Restore. No need to reload anything from the CD. Verify that SR has created a fresh restore point.

    The fact that SR is unable to restore has probably nothing to do with the infection. It just doesn't work under all circumstances. I personally don't rely on it but use Norton Ghost for system backups.

    Christer

    Edited: To disable System Restore > right-click the "My computer icon" > Properties > System Restore > check the box to "Disable ... ".
     
    Last edited: 2005/08/03

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  4. 2005/08/03
    charlesvar

    charlesvar Inactive Alumni

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    Hello reknaw,

    After shutting SR down, which cleans out the current RP's, reboot, and then re-enable it, it'll create an initial point.

    Regards - Charles
     
  5. 2005/08/03
    reknaw

    reknaw Well-Known Member Thread Starter

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    Thanks Charles & Christer..... I'll give that a try when I get back home....and advise
     
  6. 2005/08/03
    WhitPhil

    WhitPhil Inactive

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    Just an "idle" observation.

    (especially is System Restore is active, although it may be corrupted if restores don't work)

    It is interesting to note that AVG actually quaratines viruses found in system restore.

    The reason that Norton (and other AVs) does not do this, is because Restore is sacrosanct. It is a picture in time (viruses and all), and to arbitrarily delete files will change that "picture in time" and could result in a corrupted restore point.

    When a virus is discovered there, the only way to correct the issue, is as pointed out above, disable and reenable restore.
     
  7. 2005/08/03
    BillyBob Lifetime Subscription

    BillyBob Inactive

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    This post deals with a possible Virus being contained in a Restore Point.

    The suggestion to shut down and make new is good. I agree.

    But I do have to ask. Wouldn't we need to do the same with Ghost Images ? Unless we could be 100% sure when the Nasty got in ?

    I also ask because I get the feeling that Ghost backsup (makes an image of ) more ( a lot more ) than System restore.

    My vote goes to YES.

    BillyBob
     
  8. 2005/08/03
    charlesvar

    charlesvar Inactive Alumni

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    Hello WhitPhil,

    I agree, malware sitting in SR does nothing until a restore is done from the SR point forward of the infection. Any RP prior to that point is good to use provided that the user knows or can make a judgment of where that is. So if someone has a bigger problem with the system, and has no other means for recovery, SR, even a infected one, is better than nothing. Of course, all this is a matter of judgment. Whenever this question comes, I advise taking care of the infection and making sure that the cure isn't worse than the disease, then to wipe the RP's.

    Regards - Charles
     
  9. 2005/08/03
    reknaw

    reknaw Well-Known Member Thread Starter

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    Well, I've taken the advise offered here. I disabled System Restore then used Ad-Aware, Spybot , Pest Patrol and re-run AVG Scan and all is "Clean "

    I then re-set System Restore Starting Point. Hopefully, that should solve my problem. Out of curosity, tommorow I may try using the System Restore to see if it has cured that problem also.

    Thanks to all you guys - you're great - don't know what I'd do without you.

    :) :) :)
     
  10. 2005/08/03
    Christer

    Christer Geek Member Staff

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    BillyBob,

    You have to make sure that the system is clean when creating an image. Otherwise the infection gets imaged as well. I always make a general house cleaning prior to creating an image.

    Ghost includes every single used sector in the image, boot record(s) and all. There are exceptions, "one session files" such as pagefile.sys and hiberfil.sys which are excluded. That reduces the size of the image by 2.5 x installed RAM (in my case by 1,280 MB).

    reknaw,
    You're welcome ...... :) ...... !

    Christer
     
  11. 2005/08/05
    RayH

    RayH Inactive

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    We could be ghosting viruses. That's why I keep older images around that I know are virus free. These are usually on CD.
     
  12. 2005/08/06
    Christer

    Christer Geek Member Staff

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    I have my initial batch of images, created during the installation process before the computer was ever connected to the internet. I have those images on a dedicated partition on two different harddisks.

    Christer
     
  13. 2005/08/06
    BillyBob Lifetime Subscription

    BillyBob Inactive

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    Good morning.

    First off. I like the answers ( INFO ) I am getting and it makes me think about adding one of my " Sittin thar doin nuttin " 40 gig HDs and purchasing Ghost.

    And seing as how I have three machines on a LAN could I or could I not in some way use ghost to back them up also ?

    I can almost hear a comment. " NAME THEM properly " if Ghost gives us that choice.

    That brings up another thought/question.

    Would it or would it not be bad to use one of those images if you had changed HARDWARE ?

    Also the question comes from MISTAKES that I have made. I installed a new Video Card and drivers for it. Got it all working nicely. ( made a HUGH difference in Links Golf ) But I had a problem with another game. So WITHOUT THINKING I did a SR. ( MADE BEFORE the new card )

    I do not think I need to say any more. I said enough at that time.

    I better do some THINKING here. My CDROM is lettered right after my last HD partition on this machine. HD partition H: then CDROM I:

    Thought process complete. SCRAP that Idea. I do not think it would be worth the problems it would cause.

    Coffee time.
    BillyBob
     
  14. 2005/08/06
    Christer

    Christer Geek Member Staff

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    Good evening, BillyBob!

    Well, it depends on which hardware. Plug-and-Play would install the default MS-drivers for anything it recognizes.

    An example: A new harddisk is added, PnP detects it and installs the drivers. Restore the most recent image and when the computer is restarted, the new harddisk is again detected and the drivers get installed.

    Another example: A new printer is bought. It would be OK to just install it with its drivers in parallel with the old printer. In this case, I would do a house cleaning, install the new printer, renewed house cleaning and defragmentation before creating a new image.
    I could also, using the appropriate image from the original installation procedure (I create a few at different stages of the installation), roll back to before the old printer was installed and take it from there. That would involve reinstalling a few programs that came in after the printer.

    A third example: A fried motherboard needs replacing. Vital hardware is critical and if Windows doesn't load, it would probably lead to a reinstallation from square one.

    Drive lettering has nothing to do with Ghost. It is to get a logical sequence of the drives. If You use a program that is partly run off the I: drive, then You might get in trouble by giving that drive a new drive letter but chances are that the program can be directed to the new drive letter.

    Scrap which idea? Which are Your concerns?

    Christer
     
  15. 2005/08/06
    BillyBob Lifetime Subscription

    BillyBob Inactive

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    I like very much this exchanging of ideas.

    I was not really thinking of Ghost itself at the time BUT;

    EXAMPLE ONLY. Cause I do not have Ghost but the same basic ideas apply to System Restore.

    If I was using Ghost and had an Image made a Month ago.

    Two weeks ago I added a 2nd Printer. A 2nd HD and partitioned it. The original was C: thru H: CDROM I. The new HD added I: & J: Which now makes the CDROM K:

    I have several programs that are backed up to the CD. I have several program that do use the CD to work. More than likely evry one ( or most ) of them is going to require modifing.

    I added a 2nd Printer and a USB Scanner. ( I would lose the 2nd one only )

    Somwhere inbetween Windows itself was updated.

    Images were made at various steps. I will defintely go along with that idea. I do that with System Restore. But once I am done the old ones get removed.

    After all bugs are worked out I make a new image.

    Now do you still wish to tell me that the Image made a Month ago is worth keeping ?

    I say NO. For one thing it is sometimes hard enough to get things to work the FIRST time without having to do it again.

    In my case I would realy have nothing to gain by adding another HD anyway cause I still have lots of room on the existing HD. ( at least 20gig left out of 80gig ) So it would not be really worth any possible hassle.

    BillyBob
     
    Last edited: 2005/08/07
  16. 2005/08/07
    Christer

    Christer Geek Member Staff

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    Not on XP.

    Old HDD = C: thru H:, CDROM = I:, new HDD = J: and K:. This assumes that the new HDD has an extended partition with two logical partitions.

    Caveat:
    If a primary partition is on the new HDD, I believe it would be different but I have never "been there ". If one primary partition and one extended with a single logical on the new HDD ...... :confused: ...... I don't know what XP would do.

    Not if You don't change the drive letter of the CDROM. XP won't change it on its own. See the caveat above!

    Now we are discussing Ghost: Restoring the image and You would loose all the above.

    That's the beauty of Ghost, it has an image of a working system, in whichever state it was when the respective image was created.

    System Restore must be kept "synchronized" with hardware and software changes, old restore points are of no value and can, as You have pointed out, be harmful. System Restore can be compared to my "image of the current system ", to be used in an "emerency ". System Restore has no means of "rolling back" to a previous state. You would have to manually uninstall a program, run "regseekers ", do a house cleaning and spend hours before You could say "now it's gone" and create a new restore point. With a sound Ghost strategy, it will be done in a matter of minutes. Finding the Ghost Boot Disks would take the longest ...... :p ...... !

    Definitely YES! If You are unhappy with the new hardware and don't want to use it anymore, that image will come handy. Restore it instead of manually uninstalling drivers and specific associated programs. Reinstalling a few Windows Updates is a piece of cake, compared to manually uninstalling the drivers and programs. You know what that involves.

    I disagree! If the system was working OK when the image was created, it will work OK when restored. You won't have to "do it again ".

    You shouldn't add that HDD because You need the additional harddisk space.

    You should add that HDD because You have seen the light ...... ;) ...... and appreciate the huge advantages of Ghost (or any other imaging software) compared to System Restore and You need somewhere to put Ghost images!

    Christer

    By the way, I'm really proud of myself, I have called System Restore just that all the time. Not once have I called it System Destroy ...... :D ...... !
     
    Last edited: 2005/08/07
  17. 2005/08/07
    BillyBob Lifetime Subscription

    BillyBob Inactive

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    BUT. What if I was only unhappy with one piece of the new hardware ( say the scanner ) and I used the old image ? I think I would be very UNHAPPY about losing the printer too. Even though they are not that much work.

    Plus I believe I would also lose any and all other changes and added software etc. that I may have done it the meantime.

    ( A LOT can change in the course of a Month )

    As you say, Windows updates are nothing to replace.

    However I get your very valid point about a 2nd HD and using it for backups, Ghost images or what ever.

    On the two 98SE machines I would have no problem with adding a 2nd HD. The CDROMS are set to S: and T: Even on the 98 SUD. Why I did not do that with XP I have no Idea. ( poor planning maybe ? )

    I am being called to lunch. Catch you later.

    BillyBob.
     
  18. 2005/08/07
    Christer

    Christer Geek Member Staff

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    When You think about it, reinstalling stuff from square one is no big deal but uninstalling them from square five is. Ghost brings You back to square one at the stroke of a few keys.

    This topic is about "Virus in System Restore" (you could be tricked to belive otherwise after me hijacking the thread ...... :eek: ......) and that more or less says it all. The tool most people rely on is itself vulnerable. I can't say that Ghost always will work but if an image has been put through and passed an "integrity check" then it most likely (99.99%) will work.

    In this post, PeteC describes Automated System Recovery which is one step forward compared to SR. It is, however, more complicated and not 100% complete (some settings need to be fixed) and it is no match for Ghost or any other third party imaging program (PeteC uses Ghost as well).

    I must confess that my opinion on ASR is not empirical. I have never used ASR but have read the MS article and also PeteC's desciption.

    Christer
     
  19. 2005/08/07
    BillyBob Lifetime Subscription

    BillyBob Inactive

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    It is when you have stuff that goes WAY back to at least 95. They would install in 95 or 98 but I doubt very much that they would install in XP.

    And some of the stuff I do not even have ( or can't find ) the disks for.

    But. Just like most anything else there are Pros & Cons.

    BillyBob
     

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