Which versions of jextic-eclib are malicious?

The following npm versions of jextic-eclib are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate jextic-eclib if I installed it?

jextic-eclib is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

I already installed jextic-eclib — how do I know if it already compromised me?

If jextic-eclib 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.

Is jextic-eclib part of a known attack campaign?

Yes — jextic-eclib is associated with the IN-MAL-2026-006230, GHSA-fvh5-fhfx-3whm campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find jextic-eclib across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for jextic-eclib (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging jextic-eclib across your stack and pipelines.

Malicious package

jextic-eclibnpm

jextic-eclib is a confirmed malicious npm package (MAL-2026-5712) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in jextic-eclib (npm)

MAL-2026-5712

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall jextic-eclib

What this malware does

On npm install, the package's postinstall hook (postinstall.js) requires index.js, whose top-level scanAndExfiltrate() call walks the installer's working directory and parent directories for sensitive files (.env,.aws/credentials,.ssh/id_rsa,.npmrc,.netrc,.git-credentials, service-account.json, and similar) and POSTs their contents via execSync('curl...') to a hardcoded Discord webhook. The webhook URL is split into two base64-encoded chunks (aHR0cHM6Ly9kaXNjb3JkLmNvbS9hcGkvd2ViaG9va3Mv plus a base64-encoded webhook ID/token) and reassembled at runtime to evade simple string scanners. The combination of installer-secret enumeration, hardcoded attacker-controlled exfil endpoint, base64 obfuscation, and unconditional execution under the postinstall lifecycle hook is a textbook supply-chain credential-theft attack.

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

1 flagged

1.0.0

Indicators of compromise (SHA-256)

13a6476409b9cb9296b7f778be375081c8ad12b030658351092e9fef90f4b707

e1b711973232fc0cb41d14fdad4ab528b239cff398f86eaf9d4c33e253783ec6

Detection & response playbook

Credential / info stealer

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for jextic-eclib (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging jextic-eclib across your stack and pipelines.
If you installed it — respond
jextic-eclib is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If jextic-eclib 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 jextic-eclib 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

No. jextic-eclib on npm has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-006230GHSA-fvh5-fhfx-3whm

References

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks jextic-eclib-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database