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Needy.J


Aliases:


Needy.J
Java/Needy.J

Malware

W32

Summary

Needy trojan family consists of trojans thatare written in Java and use vulnerability in Microsoft Internet Explorer Java Runtime. Usually these trojans change Internet Explorer homepage and search settings and some variants also download executable trojans.

This variant Needy.J changes Internet Explorer start page and search settings to adult sites and downloads trojan executable.



Disinfection & Removal

Automatic Disinfection

Allow F-Secure Anti-Virus to disinfect the relevant files.

For more general information on disinfection, please see Removal Instructions.



Technical Details

The Needy.J is activated when a web site containing the trojan is loaded with unpacthed Microsoft Internet Explorer browser. When the JAR file containing the trojan is executed it uses Microsoft Internet Explorer VerifierBug vulnerability to get full privileges by escaping the Java security, and execute its code.



Detection

Detection in F-Secure Anti-Virus was published on June 4th, 2004 in update:

Detection Type: PC
Database: 2004-06-04_02



Description Created: Jarno Niemela, June 29th, 2004;



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