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


Risk Level 2: Low

April 7, 2004
February 13, 2007 12:55:57 PM
Also Known As:
W32/Netsky.u@MM [McAfee], W32/Netsky-U [Sophos], WORM_NETSKY.U [Trend], Win32.Netsky.U [Computer Assoc
Systems Affected:

W32.Netsky.U@mm is a mass-mailing worm and a variant of W32.Netsky.S@mm. This worm also contains backdoor functionality and may perform a Denial of Service (DoS) attack against predetermined Web sites.

The Subject and Attachment name vary. The attachment has a .pif file extension.

Antivirus Protection Dates

  • Initial Rapid Release version April 8, 2004
  • Latest Rapid Release version May 31, 2016 revision 036
  • Initial Daily Certified version April 8, 2004
  • Latest Daily Certified version June 1, 2016 revision 005
  • Initial Weekly Certified release date April 14, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Yana Liu

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STAR Antimalware Protection Technologies
2016 Internet Security Threat Report, Volume 21
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