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W32.Mydoom.N@mm

Risk Level 2: Low

Discovered:
July 29, 2004
Updated:
February 13, 2007 12:25:56 PM
Type:
Worm
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

W32.Mydoom.N@mm is a variant of W32.Mydoom.M@mm. It is a mass-mailing worm that drops and executes a backdoor that is detected as Backdoor.Zincite.A, which listens on TCP port 1034.

The worm uses its own SMTP engine to send itself to email addresses that it finds on the infected computer. The email contains a spoofed From address. The subject and body text will vary, as will the name of the attachment.

This threat is packed using ASPack.

Antivirus Protection Dates

  • Initial Rapid Release version July 29, 2004
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version July 29, 2004
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date August 4, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

  • Wild Level: Low
  • Number of Infections: 0 - 49
  • Number of Sites: 0 - 2
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Moderate

Damage

  • Damage Level: Low

Distribution

  • Distribution Level: Low
Writeup By: Yana Liu

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