Wisdoor represents a family of backdoors. They allow the remote control of a victim's computer by sending specific commands via IRC channels. Also, these backdoors can steal data and spread to computers vulnerable to exploits.
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The Windoor.N file is a PE executable about 20 kilobytes long, packed with ASPACK file compressor.
When the Windoor.N file is started, it copies itself as a file named "windll.exe" to the Windows folder and then creates the following startup key value in the Registry:
When the Backdoor is active, it connects to an IRC server, joins a certain channel and acts as a bot there.
The following IRC server and port is used by the Backdoor:
The backdoor joins the following IRC channel:
A hacker can send commands to the bots to and control infected computers. Several tasks can be performed, including the following:
When spreading, the bot can exploit the following vulnerabilities: