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
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First, check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
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.
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