This is multifunctional .NET keylogger.

Features:

• Reads settings from a resource file
• Sends the log by email
• If mail is unavailable, it writes in the file
• If writing to the file is also unavailable, stores the entire log with the ability to write to a flash drive
• Copies itself to disk and adds copy to autorun
• Checks the title of the active window
• Deletes itself if debugging is detected
• encrypts logs with AES256

To decrypt the logs you can use DecryptorSharp or DecryptorQt.