Which keylogger uses a forged Windows device driver to record keystrokes and remains undetectable by standard tools?

Which keylogger uses a forged Windows device driver to record keystrokes and remains undetectable by standard tools?

• A. Acoustic/CAM Keylogger
• B. Wi-Fi Keylogger
• C. Application Keylogger
• D. rootkit-based keylogger

Answer: (D)

Rootkit-based keyloggers rely on kernel-level access by loading a forged Windows device driver. This driver operates in the Windows kernel, sitting between the hardware input and the rest of the system, so keystrokes are captured at a very low level before user-mode applications ever see them. Because it hides as a legitimate driver and can manipulate kernel structures, it can mask its own presence and avoid standard security tools that largely monitor user-space processes and typical file/registry activity. This combination—kernel-level interception plus stealth—makes it undetectable by many ordinary checks and hard to spot with everyday security software. The other options don’t fit this behavior. Acoustic/CAM keyloggers capture keystrokes via sound and don’t rely on a Windows driver. Wi-Fi keyloggers focus on network activity or wireless data exfiltration rather than intercepting keyboard input at the system level. Application keyloggers run in user space and are generally detectable by standard security tools, lacking the stealth and persistence of a kernel-level rootkit-driven approach.

Rootkit-based keyloggers rely on kernel-level access by loading a forged Windows device driver. This driver operates in the Windows kernel, sitting between the hardware input and the rest of the system, so keystrokes are captured at a very low level before user-mode applications ever see them. Because it hides as a legitimate driver and can manipulate kernel structures, it can mask its own presence and avoid standard security tools that largely monitor user-space processes and typical file/registry activity. This combination—kernel-level interception plus stealth—makes it undetectable by many ordinary checks and hard to spot with everyday security software.

The other options don’t fit this behavior. Acoustic/CAM keyloggers capture keystrokes via sound and don’t rely on a Windows driver. Wi-Fi keyloggers focus on network activity or wireless data exfiltration rather than intercepting keyboard input at the system level. Application keyloggers run in user space and are generally detectable by standard security tools, lacking the stealth and persistence of a kernel-level rootkit-driven approach.