Written in Delphi

Backdoor.Tendoolf.b:
c:\WINDOWS\kernel32.exe 

size: 590.848 bytes 

startup:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run "Windows" 
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServices "Windows" 
c:\windows\system.ini, [boot] "shell" 
c:\windows\win.ini, [windows] "load" 

registry added:
HKEY_CURRENT_USER\Identities\{CB890900-5270-11D8-A191-00A02480D0C4}\Software\Microsoft\Outlook Express\5.0\MailNote 

Backdoor.Tendoolf.b is capable of disabling some anti-virus programs and firewalls