W32.Blaster.E.Worm does not have a
mass-mailing functionality.
For specific details on each of these steps, read the following
instructions.
1. Disabling System Restore (Windows 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"
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. 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: Read
"How to update virus definition files using the Intelligent
Updater" for detailed instructions.
3. Ending the Worm process
To end the Trojan process:
Press Ctrl+Alt+Delete once.
Click Task Manager.
Click the Processes tab.
Double-click the Image Name column header to alphabetically sort
the processes.
Scroll through the list and look for mslaugh.exe.
If you find the file, click it, and then click End Process.
Exit the Task Manager.
4. Scanning for and deleting the infected files
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 as infected with W32.Blaster.E.Worm,
click Delete.
5. Reversing the changes made to the registry
CAUTION: 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 keys only. Read the document, "How
to make a backup of the Windows registry," for instructions.
Click Start, and then click Run. (The Run dialog box appears.)
Type regedit
Then click OK. (The Registry Editor opens.)
Navigate to the key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
In the right pane, delete the value:
"windows automation"="mslaugh.exe"
Exit the Registry Editor
