VBS.Clyon@mm

Risk Level 1: Very Low

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Discovered:: February 21, 2003
Updated:: February 13, 2007 11:42:45 AM
Type:: Worm
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

The Visual Basic (VB) Script, VBS.Clyon@mm, is a mass-mailing worm that uses Microsoft Outlook to send itself to all the contacts in Outlook Address Book. The email has the following characteristics:

Subject: Saludos
Message:
Hola:
Aquí le adjunto mi Curriculum Vitae... Gracias.
Attachment: Iesrack.vbs

NOTE: Definitions dated prior to February 24, 2003 may detect this threat as Bloodhound.VBS.Worm.

Antivirus Protection Dates

Initial Rapid Release version February 24, 2003
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version February 24, 2003
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date February 24, 2003

Click 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: Low

Distribution

Distribution Level: High

Writeup By: Yana Liu

Technical Details

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Internet Security Threat Report, Volume 16