Trojan.Helemoo

Risk Level 1: Very Low

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Discovered:: July 23, 2005
Updated:: February 13, 2007 12:42:36 PM
Also Known As:: JS/IEexploiter.A@expl [Frisk]
Type:: Trojan Horse
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

Trojan.Helemoo is a back door Trojan that exploits the Microsoft Internet Explorer DHTML Object Race Condition Memory Corruption Vulnerability (described in Microsoft Security Bulletin MS05-020).

Antivirus Protection Dates

Initial Rapid Release version July 23, 2005
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version July 23, 2005
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date July 27, 2005

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: Masaki Suenaga

Technical Details

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Internet Security Threat Report, Volume 16