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


August 6, 2002
February 13, 2007 11:55:09 AM
Systems Affected:

W32.HLLW.Neight is a mass-mailing worm. It uses Microsoft Outlook to send itself to all contacts in Outlook Address Book. The email message can have various subject lines; the attachment is PhotoAlbum.exe.

The worm creates a Visual Basic (VB) script file and inserts this file into Microsoft Word documents. This VB script file is also a mass-mailing worm that emails itself to the first 50 contacts in the Outlook Address Book. This email message has the subject "Important E-Mail from <current user>," and the Melissa.vbs file is attached.

The worm attempts to spread by copying itself to the KaZaA shared folder and ICQ shared folder.

Antivirus Protection Dates

  • Initial Rapid Release version August 7, 2002
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version August 7, 2002
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date August 7, 2002
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Yana Liu

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