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  3. JS.Speth.Worm


Risk Level 1: Very Low

December 9, 2004
February 13, 2007 12:30:53 PM
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

JS.Speth.Worm is a Microsoft JScript file that copies itself throughout the C drive of the infected computer. It overwrites Autoexec.bat, as well as .vbs and .cmd files. The worm contains a mass-mailing routine and can also spread via mIRC, Pirch98, and vIRC.

Antivirus Protection Dates

  • Initial Rapid Release version December 9, 2004
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version December 9, 2004
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date December 15, 2004
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: Low


  • Distribution Level: Low
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: Maryl Magee

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