Summary

Dewin is a backdoor that can be used by an attacker to install unwanted programs from a website to the victim machine. When started it copies itself to Windows Directory as 'Winreg.exe'. This copy of the file is added to the registry as

 'HKLM\Software\Microsoft\Windows\CurrentVersion\Run\SystemReg'

F-Secure Anti-Virus can detect this backdoor with the latest updates.

Removal instructions

- Locate and remove the registry key

 'HKLM\Software\Microsoft\Windows\CurrentVersion\Run\SystemReg'

- Reboot the machine

- Instruct F-Secure Anti-Virus to delete the infected file

[F-Secure Corp.; April 15th, 2002]