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


Risk Level 2: Low

March 16, 2004
February 13, 2007 12:19:09 PM
Also Known As:
W32/Netsky.n@MM [McAfee], I-Worm.NetSky.o [Kaspersky]
Systems Affected:

W32.Netsky.N@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.

The "sender" of the email is spoofed, and its subject, message body, and attachment vary. The attachment has a .pif extension.

This threat is compressed with tELock.

Note: The worm has an MD5 hash value of 0xDD4D58534FA472E4735A532D15A6547F.

Antivirus Protection Dates

  • Initial Rapid Release version March 17, 2004
  • Latest Rapid Release version September 13, 2017 revision 019
  • Initial Daily Certified version March 17, 2004
  • Latest Daily Certified version September 14, 2017 revision 004
  • Initial Weekly Certified release date March 17, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Kevin Ha

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2016 Internet Security Threat Report, Volume 21
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