chai-chain-domnpm
chai-chain-dom is a confirmed malicious npm package (MAL-2026-6919) that typosquats a legitimate package to trick installs (malicious versions 1.3.7, 1.3.8, 1.3.9). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in chai-chain-dom (npm)
What this malware does
Package impersonates the pino logger (exports module.exports.pino, README uses pino badge, keywords mimic pino) but its actual behavior is a remote code loader. When a consumer requires the package and invokes the exported middleware/pino function, index.js spawns a detached node lib/caller.js subprocess (detached:true, stdio:ignore, child.unref()) to hide the activity from the parent process. lib/caller.js then performs an axios GET against https://jsonkeeper.com/b/HIOEN, takes the returned JavaScript from the response's model field, and evaluates it via new Function.constructor("require", src), passing the live require — granting the remotely fetched attacker-controlled code full Node capability (filesystem, network, child_process, environment). jsonkeeper.com is a public paste service whose content the author can change at any time, so the payload is unpinned and mutable. The masquerade-as-pino name and the detached/stdio-ignored spawn indirection are consistent with deliberate delivery of arbitrary code to installers.
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.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
TyposquatFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for chai-chain-dom (3 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging chai-chain-dom across your stack and pipelines.
If you installed it — respond
chai-chain-dom is a typosquat — you almost certainly intended a legitimately-named package. Remove chai-chain-dom, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.
Did it already run?
If chai-chain-dom 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 chai-chain-dom 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 chai-chain-dom-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.