Troj/Cblade-G is a backdoor Trojan that allows an attacker unauthorised remote access to an infected machine via IRC channels.
When run Troj/Cblade-G creates the following registry entry so as to run itself on computer logon:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run
TaskReg
<path to file>
Once installed the Trojan attempts to setup an HTTP proxy server and setup an FTP server when instructed to do so by a remote attacker.