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Malicious package

hyper-kube-confignpm

hyper-kube-config is a confirmed malicious npm package (MAL-2026-12392) that steals credentials and exfiltrates sensitive data (malicious versions 1.1.1, 1.1.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in hyper-kube-config (npm)

MAL-2026-12392
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall hyper-kube-config

What this malware does

package.json declares a preinstall hook that runs index.js on npm install. index.js collects the installer's hostname, username, home directory, DNS server configuration, current working directory, and the contents of /etc/passwd and /etc/hosts, then POSTs this payload over HTTPS to the hardcoded subdomain x75h3spwmlqq7bzriw6gm6w8azgq4hs6.oastify.com (a Burp Collaborator out-of-band interaction host). Execution is automatic at install time with no consent prompt and no documented purpose. The behavior matches a dependency-confusion reconnaissance beacon that exfiltrates installer host identity and local system files to an attacker-controlled endpoint.

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

2 flagged
1.1.11.1.2

Indicators of compromise (SHA-256)

4e6e8d8500ee41d92250882b57d98d805b381d2d08eeeac7bae55c3f5e417dff
a7d5d00e0c243819b3d1813314c4f4ef596f92a034d82e0a5acce92740bed5d5
1891086f850adb6764a1b4ecdd253003261a5b55d3e60debeed9d5065f4abc9e

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for hyper-kube-config (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging hyper-kube-config across your stack and pipelines.

  2. If you installed it — respond

    hyper-kube-config 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.

  3. Did it already run?

    If hyper-kube-config 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.

  4. How O3 protects you

    O3 blocks hyper-kube-config 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. hyper-kube-config on npm has been identified as a malicious package (versions 1.1.1, 1.1.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-014849GHSA-pvc8-7whj-r3w4IN-MAL-2026-019815

References

Credits

  • Amazon Inspector · finder

Detect & block this

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

Explore

hyper-kube-config (npm) malicious package — MAL-2026-12392 | O3 Security