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.
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First check if your F-Secure security program is using the latest detection database updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
NOTE If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note You need administrative rights to change the settings.
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: