McAfee > Theat Center > Virus Detail Page

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.

Aliases

• JS.Menger.Worm (nav)

• JS_MENGER.GEN (Trend)

• JS.Coolnow (CA)

Characteristics

This is a generic detection to catch JavaScripts which exploit an Internet Explorer vulnerability which affects MSN Messenger. This vulnerability was discovered on February 11, 2002.

On February 13 a threat was discovered in the wild that makes use of this exploit. It seemed to have appeared on several websites simultaneously. The websites were quickly removed. The scripts sent an MSN Messenger message to users on the infected systems' contact list with a link to the infected webpage.

Here is a screen shot of one such script in action.

On February 14, 2002, the malicious code was also encountered urging the receiver to go to a specific Belgium webaddress:
URGENT - Go to http://users.skynet.be/______/cool.htm
In the above link the underscores are a replacement of the actual address, replaced for security reasons.

Microsoft has released a patch for this vulnerability MS02-005

Symptoms

There are no obvious signs of infection. The script carries no damaging payloads.

Method of Infection

This script makes use of an Internet Explorer vulnerability. Visiting an infected website can cause such scripts to be executed automatically.

Removal

All Users:
Use current engine and DAT files for detection and removal.

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).

Additional Windows ME/XP removal considerations

Variants

Variants

N/A

All Information

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.

Aliases

• JS.Menger.Worm (nav)

• JS_MENGER.GEN (Trend)

• JS.Coolnow (CA)

Characteristics

Characteristics -

This is a generic detection to catch JavaScripts which exploit an Internet Explorer vulnerability which affects MSN Messenger. This vulnerability was discovered on February 11, 2002.

On February 13 a threat was discovered in the wild that makes use of this exploit. It seemed to have appeared on several websites simultaneously. The websites were quickly removed. The scripts sent an MSN Messenger message to users on the infected systems' contact list with a link to the infected webpage.

Here is a screen shot of one such script in action.

On February 14, 2002, the malicious code was also encountered urging the receiver to go to a specific Belgium webaddress:
URGENT - Go to http://users.skynet.be/______/cool.htm
In the above link the underscores are a replacement of the actual address, replaced for security reasons.

Microsoft has released a patch for this vulnerability MS02-005

Symptoms

Symptoms -

There are no obvious signs of infection. The script carries no damaging payloads.

Method of Infection

Method of Infection -

This script makes use of an Internet Explorer vulnerability. Visiting an infected website can cause such scripts to be executed automatically.

Removal -

Removal -

All Users:
Use current engine and DAT files for detection and removal.

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).

Additional Windows ME/XP removal considerations

Variants

Variants -

N/A