1. Symantec/
  2. Security Response/
  3. W32.Nimda.E@mm


Risk Level 2: Low

October 29, 2001
February 13, 2007 11:37:37 AM
Also Known As:
I-Worm.Nimda.e [Kaspersky], PE_NIMDA.E [Trend], Win32.Nimda.E [Computer Associ, W32/Nimda-D [Sophos], W32/Nimda.E@mm [Frisk], Win32/Nimda.E worm [ESET], W32/Nimda.gen@MM [McAfee]
Worm, Virus
Systems Affected:
Microsoft IIS, Windows
CVE References:
CVE-2001-0154 CVE-2000-0884

W32.Nimda.E@mm is a new version of W32.Nimda.A@mm that contains bug fixes and other modifications, which are designed to prevent antivirus programs from detecting this variant.

For additional information, read the Microsoft TechNet article, "Information on the "Nimda" Worm."

For information on .enc detections, read the article, "What is an .enc detection?"

Antivirus Protection Dates

  • Initial Rapid Release version October 29, 2001
  • Latest Rapid Release version February 7, 2018 revision 032
  • Initial Daily Certified version October 29, 2001
  • Latest Daily Certified version February 8, 2018 revision 007
  • Initial Weekly Certified release date October 29, 2001
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Eric Chien

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