Troj/Agent-BTT is a Trojan for the Windows platform.
When Troj/Agent-BTT is installed it creates the file <Windows system folder>\msnscr.exe.
The following registry entry is created to run msnscr.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
msnscr.exe
<Windows system folder>\msnscr.exe