ChainDrop Worm: Sophisticated npm Supply Chain Attack Leveraging GitHub Actions and Trusted Publishing
The ChainDrop worm is a self-propagating supply-chain attack that has compromised 444 npm packages, affecting ecosystems with over 2 billion monthly downloads. By compromising high-reputation GitHub accounts, attackers inject malicious code into main branches to trigger automated releases via GitHub Actions. Critically, the use of OpenID Connect (OIDC) through "Trusted Publishing" allows the poisoned packages to arrive with valid provenance and digital signatures, neutralizing traditional integrity checks. The malware employs a multi-stage execution pattern, utilizing the Bun JavaScript runtime to deploy a 710KB obfuscated payload. It utilizes "EtherHiding"—a Command and Control (C2) mechanism leveraging the Ethereum blockchain—to evade network-based detection while targeting cloud credentials, AI-agent configurations, and cryptocurrency keystores.
Lazarus Group's Brandjacking Campaign targeting the npm Ecosystem
The Lazarus Group has shifted from traditional typosquatting to "brandjacking" within the npm ecosystem, deploying multi-stage droppers disguised as utilities for popular libraries like React, Buffer, and Chai. These malicious packages execute Base64-encoded strings to fetch a second-stage Node.js backdoor from jsonkeeper.com, which subsequently connects to a C2 server (45.59.163.198:1244) to deploy a final payload (f.js) into the ~/.vscode directory. By utilizing npm install --silent for dependency resolution, the attackers establish persistent remote code execution (RCE) on developer workstations, posing a critical risk to CI/CD pipelines and source code repositories.