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Trojan.JS.Offensive

Risk Level 2: Low

Discovered:
August 20, 2001
Updated:
February 13, 2007 11:48:49 AM
Also Known As:
Trojan.Offensive
Type:
Trojan Horse

Trojan.JS.Offensive is a Trojan horse that comes in the form of an .html file. (It could also be a Web page on the Internet).

This Trojan exploits ActiveX capabilities, which allows it to modify your browser's home page, as well as to severely restrict your access to the system. If the Trojan has been activated, you should either contact a computer professional for assistance or consider reinstalling Windows.

Two variants of this Trojan have been received by Symantec. These variants differ only in the way they are activated:
  • The first variant displays one button that contains the text "Start" and it is activated when you click the button.
  • The second variant does not display a button, and it will be activated as soon as you open the .html file.

CAUTION: If Norton AntiVirus detects a file as being infected with Trojan.JS.Offensive, you should delete it immediately. Do not open it.

Definitions dated prior to August 22, 2001 detect this trojan as Trojan.Offensive

Antivirus Protection Dates

  • Initial Rapid Release version August 20, 2001
  • Latest Rapid Release version August 20, 2001
  • Initial Daily Certified version August 20, 2001
  • Latest Daily Certified version August 20, 2001
  • Initial Weekly Certified release date pending
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: Difficult

Damage

  • Damage Level: High

Distribution

  • Distribution Level: Low
Writeup By: Atli Gudmundsson

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