Classification

Category: Malware

Type: Worm

Aliases: Choke, I-Worm.Choke, Win32.Choke, w32/Choke

Summary


Choke is a worm that utilises MSN Messenger for spreading. It sends itself using filenames like 'ShootPresidentBUSH.exe', 'choke.exe' and 'George.W.Bush@whitehouse.gov' as username.

Removal


F-Secure Anti-Virus with the latest updates detects and removes it. To remove it it's enough to delete the file 'c:\choke.exe'. If it's locked exit to DOS first then delete it.

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Technical Details


When executed it copies itself to 'c:\choke.exe' and creates a key in the registry under

'HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run'

with the name 'Choke' and the value 'c:\choke.exe -blahhh' to ensure that it will be started at every system startup. After this it exits with and error message saying

'This program needs Flash 6.5 to run!'

It creates a file 'c:\about.txt' with this content:

Choke , Copyright 1886
... A MAD CHRISTIAN
---------------------------------------
Go talk swearwords about God
You all will die, stupid humans.
You fools didn't see what you have done
Bye slut, go talk shit about me.
(Call me a 'psychophatt', but I respect the Creator of life...)
' Consider your earth '

The worm sends messages to random ICQ users (using 'xxxxxxx@pager.icq.com') saying:

'Micro$oft invites you to use MSN Messenger!'