1. Symantec/
  2. Security Response/
  3. W32.Wullik.B@mm


Risk Level 2: Low

November 6, 2003
February 13, 2007 12:13:26 PM
Also Known As:
Bloodhound.W32.VBWORM, W32/Wukill.worm [McAfee]
Systems Affected:

W32.Wullik.B@mm is a mass-mailing worm that attempts to send itself to all the contacts in the Outlook address book.

The email has the following characteristics:

Subject: MS?DOS???? (the ?'s represent Chinese characters.)
Attachment: MShelp.EXE
Message: <Chinese text>

The worm makes numerous copies of itself in random locations, and moves to a new location when Windows Explorer browses to the folder from which it runs. It can spread to floppy disks and shared network drives under some conditions.

W32.Wullik.B@mm is written in Visual Basic. Virus definitions dated prior to November 7, 2003 may detect it as Bloodhound.W32.VBWORM.

Antivirus Protection Dates

  • Initial Rapid Release version November 7, 2003
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version November 7, 2003
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date November 12, 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Heather Shannon

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