W32.Wullik.B@mm

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.

Protection

• Initial Rapid Release version November 7, 2003
• Latest Rapid Release version December 1, 2008 revision 039
• Initial Daily Certified version November 7, 2003
• Latest Daily Certified version January 20, 2009 revision 048
• Initial Weekly Certified release date November 12, 2003

Click here 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