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


Risk Level 2: Low

April 18, 2005
February 13, 2007 12:37:19 PM
Also Known As:
CME-414, Win32.Sober.M [Computer Associ, Email-Worm.Win32.Sober.o [Kasp, W32/Sober.o@MM [McAfee], W32/Sober-M [Sophos], WORM_SOBER.N [Trend Micro]
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

W32.Sober.N@mm is a mass-mailing worm that uses its own SMTP engine to spread. It sends itself as an email attachment to addresses gathered from the compromised computer. The email may be in either English or German.

Antivirus Protection Dates

  • Initial Rapid Release version April 19, 2005
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version April 19, 2005
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date April 19, 2005
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Kaoru Hayashi

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