from the doc: 'This is a plugin for the remote administration suite Back Orifice 2000 (BO2K) from the one and only, the Cult of the Dead Cow (cDc). Released at DEFCON 7, BO2K was subject to massive hype even weeks before the actual release of it. This plugin adds Advanced Encryption Standard (AES) encryption in CBC mode capability to your BO2K. You can trade off security versus speed by choosing your keysize individually. If you want strong, flexible and fast encryption, you should go for this one. It is of course internationally available.'
AES Strong Encryption Plugin for Back Orifice 2000Win32/BO2K.Plugin.Aes.B trojan [Eset]
backdoor.bo2k.plugin.aes.b.dll