Troj/Buzus-D is a Trojan for the Windows platform.
Troj/Buzus-D runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access and control over the computer via IRC channels.
When first run Troj/Buzus-D copies itself to <Windows>\smsss.exe.
The following registry entry is created to run smsss.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
MSN
<Windows>\smsss.exe