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Malicious package

@emilgroup/customer-sdknpm

Malicious code in @emilgroup/customer-sdk (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-2044
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @emilgroup/customer-sdk

What this malware does

The package @emilgroup/customer-sdk 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.

This package was compromised by the CanisterWorm campaign by the TeamPCP threat actor. The malicious payload establishes persistence as user systemd service and places a backdoor on the infected host. The malware will also harvest npm credentials and can autonomously spread.

Malicious versions

5 flagged
1.54.11.54.21.54.31.54.41.54.5

Indicators of compromise (SHA-256)

9e22901dd8beb81b7e406217c19f1388cb157acdda126d17bc2ad62fa650c252
58c6f159066f875aefa2d05b7fe166f8b55f075694d1badead1ec998bb6e396c
e80e591c28d6cf87b532abea9f7154eacead96bb9e375bfa456ee7780ed5629d

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for @emilgroup/customer-sdk (5 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging @emilgroup/customer-sdk across your stack and pipelines.

  2. If you installed it — respond

    @emilgroup/customer-sdk is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

  3. Did it already run?

    If @emilgroup/customer-sdk 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 @emilgroup/customer-sdk 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. @emilgroup/customer-sdk on npm has been identified as a malicious package (versions 1.54.1, 1.54.2, 1.54.3, 1.54.4, 1.54.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-rgf4-gx75-xrv2

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @emilgroup/customer-sdk-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

@emilgroup/customer-sdk (npm) malicious package — MAL-2026-2044 | O3 Security