Exploit-MF06-01

This page shows details and results of our analysis on the malware Exploit-MF06-01

Download Current DAT: 6616

Threat Detail

Malware Type: Trojan

Malware Sub-type: Exploit

Discovery Date: 2006-03-21

Next Steps:

Overview
Characteristics
Symptoms
Method of Infection
Removal

Overview

This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

Minimum DAT

4723 (2006-03-21)

Updated DAT

4833 (2006-08-21)

Minimum Engine

5.1.00

File Length

Varies

Description Added

2006-03-21

Description Modified

2006-03-21

Malware Proliferation

Characteristics

This is a generic detection for a trojan that targets a heap buffer overflow in the Firefox web browser version 1.5 via JavaScript garbage collection hazards . It may also affect Mozilla Suite, Mozilla SeaMonkey and Mozilla Thunderbird when JavaScript is enabled. Remote code execution is possible. Such exploit files could be executed with little user intervention - such as visiting a website that hosted malicious files, and the end result varies from memory corruption to the silent installation of any number of viruses, trojans and potentially unwanted programs.

This vulnerability is described in CVE-2006-0293 . Exploit code has been discovered in the wild . This vulnerability has been patched by the vendor, users of this application should update to version 1.5.0.1. More information on the vulnerability and the vendor's update can be found at:

Symptoms

Vary. This is a generic detection identifying files attempting to exploit a buffer overflow vulnerability. As the detection searches for generic exploit code rather than a specific payload, it is not possible to list specific symptoms of this threat.

Method of Infection

This threats exploits a Firefox 1.5 buffer overflow vulnerability.

Removal

All Users:

Please use the following instructions for all supported versions of Windows to remove threats and other potential risks:

1.Disable System Restore .

2.Update to current engine and DAT files for detection and removal.

3.Run a complete system scan.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

1. Please go to the Microsoft Recovery Console and restore a clean MBR.

On windows XP:

Insert the Windows XP CD into the CD-ROM drive and restart the computer.
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
Select the Windows installation that is compromised and provide the administrator password
Issue 'fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.

On Windows Vista and 7:

Insert the Windows CD into the CD-ROM drive and restart the computer.
Click on "Repair Your Computer"
When the System Recovery Options dialog comes up, choose the Command Prompt.
Issue 'bootrec /fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.