Graphical User Interface
|Graphical User Interface|
|Data Sources||File monitoring, Process monitoring, Process command-line parameters, Binary file metadata|
Adversaries may attempt to gain access to a machine via a Graphical User Interface (GUI) to enhance execution capabilities. Access to a GUI allows a user to interact with a computer in a more visual manner than a CLI. A GUI allows users to move a cursor and click on interface objects, with a mouse and keyboard as the main input devices, as opposed to just using the keyboard.
If physical access is not an option, then access might be possible via protocols such as VNC on Linux-based and Unix-based operating systems, and RDP on Windows operating systems. An adversary can use this access to execute programs and applications on the target machine.
In the 2015 attack on the Ukrainian power grid, the adversary utilized the GUI of HMIs in the SCADA environment to open breakers.1
- Mitigation Limited or Not Effective - Once an adversary has access to a remote GUI they can abuse system features, such as required HMI functions.