keylogger

Simple C# keylogger with screenshot support, uploading gathered data to online file storages and sending mail with links.

Purpose of this project

This demonstrations just tries to show simple architecture for remote PC monitoring. Is's not designated as ready-to-use program. I just wanted to write something like that as a practice.

Features:

• Keyboard tracking
• Screen snapshots
  • Possibility to set set of processes and screen snapshots will be made only if windows of these processes are active
• Uploading gathered data to online file storage services
• Sending mail with links to gathered data

What's missing:

• Any attempts to hide this program (except hiding of the window)
  • Its process is called Keylogger :)
• Any dealing with issues such as:
  • Gathered files are too big
  • Uploading or sending mails stops working
  • Other exceptions which might occur
• Any settings for autostart of the program
• Any way to control keylogger remotely and update it

How it works

The application is WPF application which instanly after its launch creates a thread with keylogger and closes the WPF application. Therefore no GUI is displayed and only process remains. You can find it in task manager as Keylogger process. The sole main loop of the keylogger is in Controller.cs. In this file is also settings for mail services - usernames, passwords etc.

As we are getting some information from the system - pressed keys, screen content and active window, these access is wrapped up in DataSource.cs

Gathered data are continuously stored in files in TEMP directory of the system. The path of the directory is something like that: C:\Users\<\<user>>\AppData\Local\Temp\KeyloggerTemp

From time to time the controlles performs a check of gathered data size and if it reaches set threshold it zips KeyloggerTemp directory and uploads it to all defined online file storages. For demonstration there is just ExpireBox.cs which aims to https://expirebox.com/. After upload, all gathered data are deleted from KeyloggerTemp directory and mail with links to uploaded file is sent to defined email. You can of course use gmail, but here I used free public service https://www.mailjet.com/. Code for email is in MailJet.cs