How PowerShell Gallery simplifies attacks

ReversingLabs outlines how PowerShell’s autoloading and command clobbering features can be abused through PowerShell Gallery packages to silently hijack system commands, using higher-precedence functions and dynamic modules imported into the global scope—reducing the attack effort to a simple Install-Module step and creating software supply chain risk. The report demonstrates the technique with PoC examples, explains command precedence and autoloading behavior, and recommends rigorous vetting and behavior analysis of third-party modules (e.g., via Spectra Assure) to detect and mitigate such abuse.