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Malicious package

@emerald-react/checkboxnpm

Malicious code in @emerald-react/checkbox (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-1603
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @emerald-react/checkbox

What this malware does

The package @emerald-react/checkbox was found to contain malicious code.

Malicious versions

2 flagged
999.999.9999999.9999.9999

Indicators of compromise (SHA-256)

be78249b36d97a7cd0308a88ef48dc08da659a3c989d4165c990838cba5c596e
73d32a1bb5753affaccc3f875ba482d2565c062a5eb65862620595a84309ff3f

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 @emerald-react/checkbox (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging @emerald-react/checkbox across your stack and pipelines.

  2. If you installed it — respond

    Remove @emerald-react/checkbox 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 @emerald-react/checkbox 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 @emerald-react/checkbox 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. @emerald-react/checkbox on npm has been identified as a malicious package (versions 999.999.999, 9999.9999.9999 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-00985

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks @emerald-react/checkbox-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.

@emerald-react/checkbox (npm) malicious package — MAL-2026-1603 | O3 Security