Miasma npm Bun Runtime Staging and _index.js Execution via node.exe
This rule detects the suspicious execution of the Bun runtime spawned as a child process of Node.js or during npm package installation, which is a pattern observed in the Miasma/Mini Shai-Hulud supply chain attacks. It monitors for child processes named 'bun' or 'bun.exe' initiated by Node.js, or activities involving 'bun run _index.js' and 'node-gyp' which are characteristic of loader chains used to facilitate credential theft during package installation.
YARA-L
