Downloader.Inor.C

Risk Level 1: Very Low

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Discovered:: July 29, 2004
Updated:: February 13, 2007 12:25:58 PM
Also Known As:: VBS/Inor [McAfee]
Type:: Trojan Horse
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

Downloader.Inor.C is a variant of Trojan.Downloader.Inor.and Trojan.Download.Inor.B. This Trojan spreads as an .hta file. When this file is executed, it creates and runs the file named C:\i.exe.

When i.exe runs, it tries to download a file from a Web site.

Downloader.Inor.C may be received by email as an attachment or as a link to a Web site, which contains a CGI script that drops the Trojan.

Note: Detections prior to May 31st, 2006 may detect this threat as Trojan.Downloader.Inor.C.

Antivirus Protection Dates

Initial Rapid Release version July 30, 2004
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version July 30, 2004
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date August 4, 2004

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: John Park

Technical Details

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Internet Security Threat Report, Volume 16