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Malicious package

@openwebconcept/theme-owcnpm

Malicious code in @openwebconcept/theme-owc (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-2994
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @openwebconcept/theme-owc

What this malware does

The package @openwebconcept/theme-owc 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

3 flagged
1.0.11.0.21.0.3

Indicators of compromise (SHA-256)

ff7658977bfd00c0315e7fe6a26d8c1b095e040177f7db9fcfaede4a314fc3e9
ba9da7f58491c9c4715c34da32da8f4a9d1519075412a9be534d19e6e07466e2

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 @openwebconcept/theme-owc (3 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging @openwebconcept/theme-owc across your stack and pipelines.

  2. If you installed it — respond

    Remove @openwebconcept/theme-owc 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 @openwebconcept/theme-owc 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 @openwebconcept/theme-owc 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. @openwebconcept/theme-owc on npm has been identified as a malicious package (versions 1.0.1, 1.0.2, 1.0.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-wqjr-fc46-m68m

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @openwebconcept/theme-owc-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.