Trojan.Phel.B

Risk Level 1: Very Low

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Discovered:: March 28, 2005
Updated:: February 13, 2007 12:35:55 PM
Type:: Trojan Horse
Systems Affected:: Windows XP

Trojan.Phel.B is a Trojan horse that is distributed as an .html file and attempts to exploit the Microsoft Internet Explorer HTML Help Control Local Zone Security Restriction Bypass vulnerability (described in Microsoft Security Bulletin MS05-001). If the Trojan is successful, it downloads Downloader.Psyme.

Note: This threat will only run in Windows XP Service Pack 2.

Antivirus Protection Dates

Initial Rapid Release version March 25, 2005
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version March 25, 2005
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date March 30, 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