1. Symantec/
  2. Security Response/
  3. W32.HLLW.Yodi


Risk Level 1: Very Low

August 22, 2003
July 4, 2007 6:08:49 PM
Also Known As:
W32/Yodo.c@MM [McAfee], W32/Yodo-B [Sophos]
Infection Length:
73,728 bytes
Systems Affected:
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.

Antivirus Protection Dates

  • Initial Rapid Release version August 22, 2003 revision 24
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version August 25, 2003 revision 6
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date August 27, 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Yana Liu

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