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Malicious package

proleis-rest-clientnpm

Malicious code in proleis-rest-client (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-1823
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall proleis-rest-client

What this malware does

The package proleis-rest-client was found to contain malicious code.

Malicious versions

3 flagged
10.0.010.0.110.1.0

Indicators of compromise (SHA-256)

7e77c7b2e18559ab5495efea22621abea4b8d32144575a8045b457e6387f2e91
85952294cce10a5f7f25e077525b1d985ea33ce37974d44535fc894f5fcec749

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

  2. If you installed it — respond

    Remove proleis-rest-client 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 proleis-rest-client 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 proleis-rest-client 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. proleis-rest-client on npm has been identified as a malicious package (versions 10.0.0, 10.0.1, 10.1.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-01509

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks proleis-rest-client-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.

proleis-rest-client (npm) malicious package — MAL-2026-1823 | O3 Security