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|Data Sources||Command: Command Execution, Process: OS API Execution|
Adversaries may attempt to perform screen capture of devices in the control system environment. Screenshots may be taken of workstations, HMIs, or other devices that display environment-relevant process, device, reporting, alarm, or related data. These device displays may reveal information regarding the ICS process, layout, control, and related schematics. In particular, an HMI can provide a lot of important industrial process information.1 Analysis of screen captures may provide the adversary with an understanding of intended operations and interactions between critical devices.
- ALLANITE has been identified to collect and distribute screenshots of ICS systems such as HMIs.21
- APT33 utilize backdoors capable of capturing screenshots once installed on a system.34
- Dragonfly 2.0 has been reported to take screenshots of the GUI for ICS equipment, such as HMIs.5
- Mitigation Limited or Not Effective - Preventing screen capture on a device may require disabling various system calls supported by the operating systems (e.g., Microsoft WindowsGraphicsCaputer APIs), however, these may be needed for other critical applications.
- ICS-CERT. (2017, October 21). Advanced Persistent Threat Activity Targeting Energy and Other Critical Infrastructure Sectors. Retrieved October 23, 2017.
- Dragos. (n.d.). Allanite. Retrieved October 27, 2019.
- Jacqueline O'Leary et al.. (2017, September 20). Insights into Iranian Cyber Espionage: APT33 Targets Aerospace and Energy Sectors and has Ties to Destructive Malware. Retrieved December 2, 2019.