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  3. VBS.Merlin.C@mm


Risk Level 2: Low

August 8, 2001
February 13, 2007 11:59:27 AM

VBS.Merlin.C@mm is a mass-mailing worm written in the Visual Basic Scripting (VBS) language. The worm spreads by emailing itself to all contacts in the Microsoft Outlook address book. It can also spread across network drives and by using an IRC client and Gnotella (a client used on the Gnutella network). Its main payload attempts to create 10,000 randomly named folders in the root of drive C and places a text file into each of these folders.

Antivirus Protection Dates

  • Initial Rapid Release version August 8, 2001
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version August 8, 2001
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date pending
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment


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


  • Damage Level: Medium


  • Distribution Level: High
Note: On May 14, 2015, modifications will be made to the threat write-ups to streamline the content. The Threat Assessment section will no longer be published as this section is no longer relevant to today's threat landscape. The Risk Level will continue to be the main threat risk assessment indicator.
Writeup By: Kaoru Hayashi

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