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Malicious package

buildkite-test-collector-mocha-examplenpm

Malicious code in buildkite-test-collector-mocha-example (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-2734
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall buildkite-test-collector-mocha-example

What this malware does

The package buildkite-test-collector-mocha-example was found to contain malicious code.

Malicious versions

1 flagged
99.99.9

Indicators of compromise (SHA-256)

71e43ae286ee74c51f6ebca7ea9231aaf21ef9fbff6bba6888c7374346edc691
37fbbae0cc3cfcba7b18566c1ab1f61417b1776206c3d0317956058c43ef61fa

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 buildkite-test-collector-mocha-example (version 99.99.9). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging buildkite-test-collector-mocha-example across your stack and pipelines.

  2. If you installed it — respond

    Remove buildkite-test-collector-mocha-example 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 buildkite-test-collector-mocha-example 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 buildkite-test-collector-mocha-example 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. buildkite-test-collector-mocha-example on npm has been identified as a malicious package (version 99.99.9 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-01900

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks buildkite-test-collector-mocha-example-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.

buildkite-test-collector-mocha-example (npm) malicious package — MAL-2026-2734 | O3 Security