BASH

A common Unix and Linux command shell often abused in scripting-based attacks.

BASH is a widely deployed Unix and Linux command shell and scripting language used for system administration and automation. Its ubiquity makes it a favored tool for attackers who run reconnaissance, establish persistence, or download payloads through shell scripts, a living-off-the-land approach that blends with legitimate activity. On the exam, associate BASH with command and scripting interpreters as an execution technique, and recognize that logging shell activity and restricting script execution are relevant detection and hardening measures.