The worm spreads in a email messages with the following
Subject: RE: Korea Japan Results
Body: Take a look at these results ...
<current user's name>
The attachment name vary and could be different.
If the user executes the attached file, the following screen is
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
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.
F-Secure Anti Virus detects Chick.F (aka Brit.G) worm with the
updates published on June 7th, 2002
[Analysis: Katrin Tocheva, F-Secure; June 7th, 2002]