1. Symantec/
  2. Security Response/
  3. W32.Netsky@mm


Risk Level 2: Low

February 1, 2010
February 1, 2010 1:29:52 PM
Also Known As:
WORM_NETSKY.A [Trend], Worm:W32/Netsky [F-Secure]
Infection Length:
Systems Affected:
W32.Netsky@mm is a mass-mailing worm that uses its own SMTP engine to send itself to the email addresses it finds when scanning the hard drives and mapped drives. This worm also searches drives C through Z for the folder names containing "Share" or "Sharing," and then copies itself to those folders.

The "From" and attachment names of the email vary.

Note: Misleading Applications, also known as Rogue Security Software, are fake antivirus programs that display fake virus infection alerts in order to trick users into downloading or paying for the application. Two commonly reported fake infections are “Worm.Win32.Netsky” and “Win32.Netsky.Q”.

While similar to the name of the threat in this writeup, these fake detections are not related, and running the removal tool will report that no instances of the threat were found on your computer. For more information about Misleading Applications, see the recent Symantec Report on Rogue Security Software.

Antivirus Protection Dates

  • Initial Rapid Release version February 16, 2004
  • Latest Rapid Release version January 15, 2018 revision 020
  • Initial Daily Certified version February 16, 2004
  • Latest Daily Certified version January 15, 2018 revision 024
  • Initial Weekly Certified release date February 16, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Yana Liu

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