Download the FxSasser.exe file from:
http://securityresponse.symantec.com/av ... asser.exe. Note: Version 1.0.1 (As shown in 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.
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 05/02/2004 9:11 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"
Sorry dit is een heel verhaal van die link hierboven...
Ik heb dus die avserve2.exe verwijderd (met up_exe hadden we niet) en dan moet ik nu het System Restore uitschakelen, en dan een programma downloaden die de worm weghaalt ( ? ), en dan system restore weer activeren?
Geplaatst: 02-05-04 11:23
ajb? 
