Threats Tagged 'github actions'

A self-propagating npm worm dubbed ChainDrop infected over 400 packages downloaded hundreds of millions of times weekly, including popular packages like keyv and cacheable-request. The worm steals cloud credentials, npm and GitHub tokens, SSH keys, and sensitive developer data while extracting temporary credentials from GitHub Actions runner memory. It uses stolen npm publishing tokens to infect additional packages while maintaining their legitimate functionality. The attackers established persistence through VS Code and Claude Code configurations, employed blockchain-based command-and-control resolution via Ethereum smart contracts, and can execute attacker-supplied code. The operator demonstrated ability to silently reconfigure C2 infrastructure through Ethereum transactions without updating deployed instances. ChainDrop employs three layers of obfuscation and encryption, exfiltrates data through encrypted channels, and publishes stolen tokens in public commit messages.

A sophisticated software supply chain attack named ChainDrop has infected hundreds of npm packages, including popular caching libraries with millions of weekly downloads. Beginning August 4, 2026, attackers compromised a GitHub account of a keyv package maintainer, injecting malicious code into legitimate repositories. The malware executes credential-stealing payloads targeting developer workstations and CI/CD runners, harvesting npm tokens, GitHub credentials, cloud access keys, SSH keys, and database credentials. Using stolen credentials, the worm self-propagates by compromising additional repositories and publishing poisoned packages with valid provenance attestations. ChainDrop employs Bun runtime for execution, establishes persistence through developer tool configurations, and exfiltrates encrypted data using blockchain-based command-and-control infrastructure. This campaign represents an evolution of the Shai-Hulud npm worm.

A 710 KB JavaScript payload was discovered in the compromised [email protected] package, representing a newer variant of Shai-Hulud with enhanced obfuscation techniques. The malicious code operates with four primary objectives: harvesting credentials from local systems, CI environments, cloud platforms, Kubernetes, and Vault; exfiltrating encrypted data through dynamic HTTPS endpoints or public GitHub repositories; leveraging stolen npm credentials to publish infected patch releases across accessible packages; and exploiting GitHub credentials with GitHub Actions to compromise repositories and extract additional credentials. The campaign demonstrates sophisticated supply chain attack capabilities, targeting the npm ecosystem and development infrastructure. Multiple components were identified including obfuscated JavaScript files, VS Code configuration files, and injected GitHub Actions workflows, indicating a comprehensive approach to credential theft and lateral movement across development environments.