JS.Gigger - Mmsn_offline.htm

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AttachList is a list of email attachment files that viruses usually send in email. It contains the attached file names, typical subjects and messages, the name of the viruses that send them, and instruction on how to remove these viruses.

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Name: JS.Gigger

Sender:

Varies.

Subject:

Outlook Express Update

Message:

MSNSofware Co.

Attachment:

Mmsn_offline.htm

Comments: A worm that sends email to all Microsoft Outlook addresses.

Symptoms:


 Drops the following files: C:Bla.hta C:B.htm
C:WindowsSamplesWshCharts.js and C:WindowsHelpMmsn_offline.htm 
 Adds the line ECHO y|format c: to the Autoexec.bat file, so that if
the computer is restarted, drive C is reformatted.

Recommended Cleanup Software: We found that Easy SpyRemover is the most effective tool for removing this file.

Manual Removal Instructions: Run LiveUpdate to make sure that you have the most recent virus definitions.
Start Norton AntiVirus (NAV), and make sure that NAV is configured to scan all files. For instructions on how to do this, read the document How to configure Norton AntiVirus to scan all files.
Run a full system scan.
Delete all files that are detected as JS.Gigger.A@mm.
Remove the line that was added to the autoexec.bat file.