Stegabin Npm Supply Chain Attack Detection
This rule set detects components of the StegaBin supply-chain attack targeting npm packages. The first rule, 'stegabin_npm_loader', identifies malicious JavaScript loaders that utilize Pastebin for steganography and Vercel API paths for command and control. It looks for specific strings indicating Pastebin usage, Vercel API endpoints, and unique markers related to the steganographic decoding or payload. The second rule, 'StegaBin_VSCode_Tasks_Persistence', focuses on persistence mechanisms within VSCode's tasks.json files. It detects configurations that automatically execute malicious code upon folder opening, specifically looking for the 'runOn': 'folderOpen' property and references to the 'ext-checkdin.vercel.app' domain and associated API paths. Together, these rules aim to identify both the initial loader and the persistence mechanism used by the StegaBin campaign.
YARA
