Threats Tagged 'bun runtime'

A sophisticated supply chain attack campaign linked to Mini Shai-Hulud, Miasma, and Hades malware has compromised LeoPlatform npm packages, GitHub Actions workflows, and the Verana Blockchain Go module. The attack employs binding.gyp install-time execution, Bun-staged JavaScript malware, and encrypted credential exfiltration targeting developer and CI/CD environments. Malicious packages were published through the czirker and llxlr npm accounts in a coordinated burst on June 24, 2026. The campaign steals credentials including npm tokens, GitHub tokens, cloud provider credentials, SSH keys, and AI coding assistant configurations. Attackers use GitHub as dead-drop infrastructure and inject persistence hooks into repositories through orphan branches and fake dependency-update workflows. The RevokeAndItGoesKaboom marker connects this wave to the codfish/semantic-release-action compromise, indicating shared operational tooling.

A sophisticated supply chain attack campaign has expanded to 471 affected artifacts across npm and PyPI, targeting developers through malicious packages. The campaign uses three distinct delivery methods: executable .pth startup hooks, trojanized native .abi3.so extensions that execute at import time, and a split loader-payload architecture that searches Python's sys.path. Twenty-three newly identified PyPI packages masquerade as bioinformatics tools, AI frameworks, and popular libraries like requests and Flask. The attack deploys heavily obfuscated JavaScript stealers via Bun runtime, harvesting high-value credentials including GitHub tokens, npm registry access, cloud credentials, SSH keys, and CI/CD secrets. The malware employs anti-analysis techniques with fake LLM prompt-injection headers designed to disrupt AI-assisted security scanners, while targeting developer workstations and automated build environments.

A coordinated PyPI compromise campaign involving 37 malicious wheel artifacts across 19 packages was detected, utilizing Python startup hooks to execute credential-stealing payloads. The attack leverages .pth files for automatic execution during Python interpreter startup, downloads the Bun JavaScript runtime, and runs obfuscated JavaScript payloads. The malware targets high-value developer and CI/CD credentials including GitHub, npm, PyPI, cloud providers (AWS, GCP, Azure), Kubernetes, Vault, SSH keys, and AI tool tokens. This represents a PyPI branch of the Shai-Hulud/Miasma campaign family, using a Hades-themed variant for GitHub exfiltration. Compromised packages included established bioinformatics tools with significant download counts, stemming from apparent maintainer account takeover. The payload employs multi-layer obfuscation, AES-GCM encryption, and exfiltrates data through GitHub repositories with distinctive markers. The campaign demonstrates cross-runtime attack capabilities and ecosystem-spe...