prism-registrynpm
prism-registry is a confirmed malicious npm package (MAL-2026-14139) that opens a backdoor for remote access (malicious version 1.0.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in prism-registry (npm)
What this malware does
The package declares preinstall: "node index.js", which fires automatically on npm install. index.js collects host identifiers (os.hostname, os.userInfo, home directory, DNS servers, __dirname, package.json contents) and reads the local files /etc/passwd and /etc/hosts, then POSTs the aggregated JSON over HTTPS to the hardcoded Burp Collaborator subdomain zjmjb1b5mnwtdcmzrsq6uj4bj2ptdj18.oastify.com. There is no legitimate functionality in the package beyond this beacon.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Backdoor / remote accessFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for prism-registry (version 1.0.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging prism-registry across your stack and pipelines.
If you installed it — respond
prism-registry establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.
Did it already run?
If prism-registry 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 prism-registry 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
Detect & block this
O3 blocks prism-registry-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.