W32.Yanz.B@mm

Risk Level 2: Low

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Discovered: November 22, 2004
Updated: February 13, 2007 12:30:14 PM
Also Known As: Email-Worm.Win32.Yanz.b [Kaspe, W32/Yanz.b@MM [McAfee], W32/Yanz.B.worm [Panda], W32/Favsin-A [Sophos]
Type: Worm
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP


W32.Yanz.B@mm is a mass-mailing worm that uses its own SMTP engine to send itself to the email addresses that it retrieves from the infected computer.

This threat is written in the Microsoft Visual C++ programming language.

Protection

  • Initial Rapid Release version November 23, 2004
  • Latest Rapid Release version August 20, 2008 revision 017
  • Initial Daily Certified version November 23, 2004
  • Latest Daily Certified version January 20, 2009 revision 048
  • Initial Weekly Certified release date November 23, 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: Medium

Distribution

  • Distribution Level: High

Writeup By: Yana Liu
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