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WorldCup

Classification

Category: Malware

Type: Worm

Aliases: WorldCup, Chick.F, I-Worm.Brit.g, Brit.G, VBS/Chick.F@m

Summary


Chick.F is not considered to be a threat as the worm sends itself only once per infected system and only to a single recipient. This variant of Chick worm disguises itself as World Cup 2002 results.

Removal


Automatic action

Based on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the detected program or file, or ask you for a desired action.

Knowledge Base

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About the product

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Submit a sample

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Technical Details


The worm spreads in a email messages with the following contents:

Subject:
 RE: Korea Japan ResultsBody: Take a look at these results ... 	Regards, 	
 
[current user's name]

 
Attachment:
koreajapan.chm

The attachment name vary and could be different.

If the user executes the attached file, the following screen is displayed:

Enable ActiveX To See Korea Japan results

The script in the compiled HTML help file will be executed when the user answer "Yes" in a dialog box.

After that Chick.F searches on C:, D: and E: drives for "script.ini" file from mIRC installation directory and if find such, the worm sends via mIRC with a filename "koreajapan.chm" previously saved into Windows installation directory.

The worm uses as an infection marker value 1 in the following registry key:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\chm

and if it is set then it does not spread anymore from infected machine. Therefore Chick.F sends an infected message only to the first recipient found in the first address book.