Author: David Mitchell
Date: 17:49:27 06/09/04
Go up one level in this thread
On June 09, 2004 at 20:22:18, Jeff White wrote: >I won't ask here again and sorry to those that may be bothered by this. After >doing a google search I can't come up with any forums to ask this in. After a >very long and frustrating day, I can't seem to get the computer to work. What is >happening is once I turn it on, it stays on for about a minute and then turns >off, then just re-starts. I was told it may be the sasser worm, but I don't see >any of the file names when I do the ctrl-alt-del thing. I can't keep the thing >on long enough to do anything with it. Is there anywhere I can go to ask this or >anything I can do? The operating system is XP it's a Pentium 4 512 meg ram >2.4ghz machine if that helps. Thanks for any help and being patient with these >questions. Thanks again. > >Regards, >Jeff Jeff, Clearly, you'll need to be able to either keep the computer running for more than N minutes, or complete the viral removal within N minutes. I don't have XP, but can you start it in "Safe Mode", like Win2000? There is a virus related newsgroup, although both MS and Symmantic may be more helpful. You may need to read up and download the needed files on one healthy computer, and then transfer that file and follow the proscribed methods quickly on the infected computer. Good luck, dave the paragraphs below are from Symmantic's Virus site: Obtaining and running the tool -------------------------------------------------------------------------------- Note: You must have administrative rights to run this tool on Windows NT 4.0, Windows 2000, or Windows XP. -------------------------------------------------------------------------------- Download the FxSasser.exe file from: http://securityresponse.symantec.com/avcenter/FxSasser.exe. Note: Version 1.0.1 (As shown in the removal tool dialog title bar) provides support for both W32.Sasser.B.Worm and W32.Sasser.Worm. Save the file to a convenient location, such as your downloads folder or the Windows desktop, or removable media known to be uninfected. To check the authenticity of the digital signature, refer to the "Digital signature" section later in this writeup. Close all the running programs before running the tool. If you are on a network or if you have a full-time connection to the Internet, disconnect the computer from the network and the Internet. If you are running Windows Me or XP, then disable System Restore. Refer to the "System Restore option in Windows Me/XP" section later in this writeup for further details. Caution: If you are running Windows Me/XP, we strongly recommend that you do not skip this step. Do one of the following: If you are running Windows NT/2000/XP, skip to step 8. If you are running Windows 95/98/Me, restart the computer in Safe mode. For instructions, read the document, "How to start the computer in Safe Mode." Double-click the FxSasser.exe file to start the removal tool. Click Start to begin the process, and then allow the tool to run. Restart the computer. Run the removal tool again to ensure that the system is clean. If you are running Windows Me/XP, then re-enable System Restore. Run LiveUpdate to make sure that you are using the most current virus definitions. Note: The removal procedure may not be successful if Windows Me/XP System Restore is not disabled as previously directed, because Windows prevents outside programs from modifying System Restore. When the tool has finished running, you will see a message indicating whether W32.Sasser infected the computer. In the case of a removal of the worm, the program displays the following results: Total number of scanned files Number of deleted files Number of repaired files Number of terminated viral processes Number of fixed registry entries Digital signature FxSasser.exe is digitally signed. Symantec recommends that you use only copies of FxSasser.exe, which have been directly downloaded from the Symantec Security Response Web site. To check the authenticity of the digital signature, follow these steps: Go to http://www.wmsoftware.com/free.htm. Download and save the chktrust.exe file to the same folder in which you saved FxSasser.exe (for example, C:\Downloads). Depending on your operating system, do one of the following: Click Start, point to Programs, and then click MS-DOS Prompt. Click Start, point to Programs, click Accessories, and then click Command Prompt. Change to the folder in which FxSasser.exe and Chktrust.exe are stored, and then type: chktrust -i FxSasser.exe. For example, if you saved the file to the C:\Downloads folder, you would enter the following commands: cd\ cd downloads chktrust -i FxSasser.exe Press Enter after typing each command. If the digital signature is valid, you will see the following: "Do you want to install and run "W32.Sasser Removal Tool" signed on 05/10/2004 3:45 PM and distributed by: Symantec Corporation" Note The date and time displayed in this dialog box will be adjusted to your time zone, if your computer is not set to the Pacific time zone. If you are using Daylight Saving time, the displayed time will be exactly one hour earlier. If this dialog box does not appear, there are two possible reasons: The tool is not from Symantec: Unless you are sure that the tool is legitimate and that you downloaded it from the legitimate Symantec Web site, you should not run it. The tool is from Symantec and is legitimate: However, your operating system was previously instructed to always trust content from Symantec. For information on this and on how to view the confirmation dialog again, read the document, "How to restore the Publisher Authenticity confirmation dialog box." Click Yes to close the dialog box. Type exit, and then press Enter. (This will close the MS-DOS session.) System Restore option in Windows Me/XP Users of Windows Me and Windows XP should 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 onto 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" 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. Revision History: May 10, 2004: Updated fixtool ( version 1.0.4) to remove infections of W32.Sasser.E.Worm. May 3, 2004: Updated fixtool ( version 1.0.3) to remove infections of W32.Sasser.D May 2, 2004: Updated fixtool ( version 1.0.2 ) to remove infections of W32.Sasser.C.Worm May 2, 2004: Updated fixtool ( version 1.0.1 ) to remove infections of W32.Sasser.B.Worm.
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