Discovered: August 22, 2003
Updated: July 4, 2007 6:08:49 PM
Also Known As: W32/Yodo.c@MM [McAfee], W32/Yodo-B [Sophos]
Type: Worm
Infection Length: 73,728 bytes
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP
W32.HLLW.Yodi is a mass-mailing worm that sends itself through any MAPI-compliant email client, including Microsoft Outlook.
The mail has the following characteristics:
Subject: A E-card just for you from your friend
Message: Hello. I just wanted to send you this e-card to show you how much of a friend you are to me! Please look at the attached E-card.
Scanned with Norton Anti-Virus
Attachment: ecard.exe
NOTE: Definitions dated prior to September 2, 2003 may detect this threat as W32.HLLW.Yodo.B.
Protection
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Initial Rapid Release version August 22, 2003 revision 24
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Latest Rapid Release version July 19, 2008 revision 019
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Initial Daily Certified version August 25, 2003 revision 6
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Latest Daily Certified version July 19, 2008 revision 018
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Initial Weekly Certified release date August 27, 2003
Click for a more detailed description of Rapid Release and Daily Certified virus definitions.
Threat Assessment
Wild
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Wild Level: Low
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Number of Infections: 0 - 49
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Number of Sites: 0 - 2
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Geographical Distribution: Low
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Threat Containment: Easy
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Removal: Moderate
Damage
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Damage Level: Low
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Large Scale E-mailing: Sends itself through any MAPI-compliant email client, including Microsoft Outlook.
Distribution
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Distribution Level: High
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Subject of Email: A E-card just for you from your friend
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Name of Attachment: ecard.exe
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Size of Attachment: 73,728
Writeup By: Yana Liu
