W95.Tenrobot - Removal

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

1. Update the virus definitions.
2. Remove the Virus, by performing one of the following:
   • Windows NT/2000/XP: Run a full system scan and repair the files detected as W95.Tenrobot. (First re-install your Symantec antivirus product, if necessary.)
   • Windows 95/98/Me: Restart the computer using a Rescue disk and run a scan.
     

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

1. Updating 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: These virus definitions are posted to the LiveUpdate servers once each week (usually on Wednesdays), unless there is a major virus outbreak. To determine whether definitions for this threat are available by LiveUpdate, refer to the Virus Definitions (LiveUpdate).
• Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted on U.S. business days (Monday through Friday). You should download the definitions from the Symantec Security Response Web site and manually install them. To determine whether definitions for this threat are available by the Intelligent Updater, refer to the Virus Definitions (Intelligent Updater).
  
  The Intelligent Updater virus definitions are available here. For detailed instructions on how to download and install the Intelligent Updater virus definitions from the Symantec Security Response Web site, click here.

2. Removing the virus

Windows NT/2000/XP

1. Start your Symantec antivirus program and make sure that it is configured to scan all the files.
   
   NOTE: If your Symantec antivirus product crashes when you start it, re-install it.
   
   • 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."
2. Run a full system scan.
3. If any files are detected as infected with W95.Tenrobot, click Repair.

Windows 95/98/Me
Because the virus remains in memory, restart the computer using a Rescue disk.

NOTE: These instructions pertain to Norton AntiVirus consumer products. If you are using an enterprise product such as Symantec AntiVirus Corporate Edition, contact Symantec Technical Support.

CAUTION: The Rescue Disk set must have current definitions. If you do not have a current Rescue Disk set, create one on an uninfected computer.

NOTE: If the infected computer uses a drive-compression utility or Dynamic Drive Overlay (DDO), refer to the document, "How to repair a virus when using a dynamic drive overlay or a disk compression utility," before continuing.

1. Close all the programs on the infected computer, and then turn off the power. (You must turn off the power to clear memory.)
   
2. Wait at least 30 seconds.
   
3. Insert the "Basic Rescue Boot Disk" into the floppy disk drive. Restart the computer.
   
4. When the Rescue Disk window appears, use the arrow keys on the keyboard to select Norton AntiVirus.
   
   
   
   
   CAUTION: Make sure that you select Norton AntiVirus when using a Rescue Disk that was created on another computer. Failure to do so could overwrite critical files and prevent the computer from starting.
   
5. On the command line at the bottom of the window, edit the line to read: navdx /cfg:a /a /doallfiles /repair.
   
   
   
   
   and then press Enter.
   
   NOTE: This will cause Norton AntiVirus to repair the infected files without prompting. If you want to be prompted when an infected file is found, use the command: navdx /cfg:a /a /doallfiles /prompt.
   
6. Follow the prompts and remove and insert disks as necessary. You may need to do this several times. Press Enter after inserting each disk.
   
7. When the scan has finished (this process could take several hours), the removal process is complete. Remove all the disks from the disk drives and turn off the computer. Wait at least 30 seconds before restarting the computer.

Technical Details