W32.HLLW.Yoohoo

Risk Level 1: Very Low

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Discovered:: August 1, 2002
Updated:: February 13, 2007 11:57:11 AM
Also Known As:: W32.HLLW.Spear, W32.HLLW.Yoohoo.B
Type:: Worm
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

W32.HLLW.Yoohoo is a worm that copies itself to the shared folders of KaZaA, Bearshare, Morpheus, and eDonkey2000. It is written is Borland Delphi programming language and may be compressed with UPX.

NOTE: definitions dated prior to August 2nd, 2002 will detect variants of this threat as W32.HLLW.Yoohoo.B

Antivirus Protection Dates

Initial Rapid Release version August 2, 2002
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version August 2, 2002
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date August 7, 2002

Click 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: Easy

Damage

Damage Level: Low

Distribution

Distribution Level: Low

Writeup By: Yana Liu

Technical Details

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Internet Security Threat Report, Volume 16