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Malicious package

@pnc-ref/harmony-support-v18npm

Malicious code in @pnc-ref/harmony-support-v18 (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-2690
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @pnc-ref/harmony-support-v18

What this malware does

The package @pnc-ref/harmony-support-v18 was found to contain malicious code.

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

all versions

Every published version of this package is considered malicious — remove it entirely.

Indicators of compromise (SHA-256)

913d7838ae217a4c1321491e962d7309f7f2974f762b94a005ede0f3c17ee0ec
e3c6a47dfcf980f2cd22ec066b1f85f003d7001a45e28ee6a5541e4b18e5edc5

Detection & response playbook

Malicious package
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for @pnc-ref/harmony-support-v18 (all published versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging @pnc-ref/harmony-support-v18 across your stack and pipelines.

  2. If you installed it — respond

    Remove @pnc-ref/harmony-support-v18 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.

  3. Did it already run?

    If @pnc-ref/harmony-support-v18 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 @pnc-ref/harmony-support-v18 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. @pnc-ref/harmony-support-v18 on npm has been identified as a malicious package (all published versions flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-rwxj-hrxv-283c

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @pnc-ref/harmony-support-v18-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.