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Downloader.Inor.B

Risk Level 1: Very Low

Discovered:
January 22, 2004
Updated:
February 13, 2007 12:16:36 PM
Also Known As:
TrojanDropper.VBS.Inor.u [Kasp, 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.B is a variant of Trojan.Downloader.Inor. This Trojan spreads as a .hta file. When this file is executed, it creates the %Windir%\System32\Usb_d2.exe file, and then executes it.

When Usb_d2.exe file is executed, it tries to download a file from a Web site.

Downloader.Inor.B may be received by email as an attachment, or 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.Download.Inor.B.

Antivirus Protection Dates

  • Initial Rapid Release version January 23, 2004
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version January 23, 2004
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date January 28, 2004
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: Low
Writeup By: Kevin Ha

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