When discussing executable files in Windows, the first thing that comes to mind is the .exe file extension. But did you know the same underlying Portable Executable (PE) file format is used by several other file extensions as well?

Apart from .exe, here are some common ones:
✔️ .dll: Dynamic Link Libraries - reusable code modules.
✔️ .sys: System files - often used for device drivers.
✔️ .ocx: OLE Control Extension - used for interactive UI elements.
✔️ .scr: Screensaver files - yes, screensavers can contain executable code!
✔️ .efi: Part of UEFI, the firmware interface on modern PCs.
✔️.cpl: Control Panel files - used to extend the Control Panel’s functionality.

These file types can serve various functions, from operating hardware devices to enhancing user interface interactions. They illustrate the flexible utility of the PE format, but it’s also worth noting that each of them could be exploited by malware in various ways.

#CyberSecurity #PEFormat #Malware