unleash-jsnpm
Malicious code in unleash-js (npm) Remove it immediately and rotate any exposed credentials.
What this malware does
[email protected] is an empty stub package (index.js exports {}, 35 bytes; no author, no description) whose sole effect is to pull a chained dependency ltidisafe from an arbitrary tarball URL on a third-party Google Cloud Storage bucket: https://ltidi.storage.googleapis.com/depenconf/ltidisafe-2.7.7.tgz. The host is not the package publisher's domain, the tarball is unpinned by hash, and the bucket is mutable — any installer running npm install unleash-js will fetch and execute whatever bytes currently sit at that URL, including any lifecycle scripts (preinstall/install/postinstall) inside the fetched tarball. The 99.9.1 version, empty metadata, and depenconf path segment are consistent with a dependency-confusion squat targeting an internal package name; the stub's only purpose is to act as a loader for the externally hosted payload.
Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
The OpenSSF Package Analysis project identified 'unleash-js' @ 99.9.1 (npm) as malicious.
It is considered malicious because:
- The package communicates with a domain associated with malicious activity.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for unleash-js (version 99.9.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging unleash-js across your stack and pipelines.
If you installed it — respond
Remove unleash-js from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If unleash-js was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks unleash-js before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
- OpenSSF: Package Analysis · finder
Detect & block this
O3 blocks unleash-js-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.