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  3. VBS.Cian.C


Risk Level 1: Very Low

February 12, 2003
February 13, 2007 11:42:59 AM
Also Known As:
VBS.Cian.C@mm, VBS.Cian.C [CA], VBS_CIAN.C [Trend], VBS/Cian [McAfee]
Worm, Virus
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

VBS.Cian.C is the VBS component inserted into an infected system by the W97M.Cian.C@mm or X97M.Cian.C@mm worm components.

VBS.Cian.C creates and infects various files and modifies several registry values.

Antivirus Protection Dates

  • Initial Rapid Release version February 13, 2003
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version February 13, 2003
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date February 19, 2003
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: Atli Gudmundsson

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