Suspicious volume of screenshot activity
This rule detects processes that are taking an unusually high number of screenshots within a defined timeframe. It identifies screenshot activity by looking for specific action types like "ScreenshotTaken", file creations with common image extensions (.png, .jpg, .jpeg, .bmp, .gif, .tiff), and process command lines containing common Windows API calls related to screen capturing (e.g., BitBlt, GetDC, PrintWindow, CopyFromScreen). The rule aggregates these events per device and triggers an alert if the total number of screenshots exceeds a configurable threshold.
Microsoft Sentinel (KQL)
