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Risk Level 1: Very Low

February 27, 2001
February 13, 2007 11:59:47 AM

VBS.JongBoy@mm is a worm that can spread using the popular chat program mIRC and through Microsoft Outlook. VBS.JongBoy@mm deletes the Regedit.exe file and attempts to overwrite several other system files.

VBS.JongBoy@mm is, like many other worms, written in the Visual Basic Scripting (VBS) language. Due to the fact that many worms are written in the Visual Basic scripting language, SARC offers a tool to disable the Windows Scripting Host.

NOTE: Definitions dated prior to 27 February detect this worm as Bloodhound.VBS.Worm.

Antivirus Protection Dates

  • Initial Rapid Release version February 27, 2001
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version February 27, 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: Easy


  • Damage Level: Medium


  • Distribution Level: Medium
Writeup By: Neal Hindocha

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