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Malicious package

near-fast-auth-signernpm

Malicious code in near-fast-auth-signer (npm) Remove it immediately and rotate any exposed credentials.

MAL-2025-192420
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall near-fast-auth-signer

What this malware does

The package near-fast-auth-signer 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.

The OpenSSF Package Analysis project identified 'near-fast-auth-signer' @ 99.0.0 (npm) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.

Malicious versions

1 flagged
99.0.0

Indicators of compromise (SHA-256)

99a38ccf753f8c94f130e7921b0345060085f120c50d36b409f2a2bd8e6069d8
e444c78cfb0ccd598308409d6c7b44c24c911748d568e7c1d363926e0ae2dc3d
85ca901df252a441f9253e1a56812e262f6c7282f53587866710310fa282394c

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 near-fast-auth-signer (version 99.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging near-fast-auth-signer across your stack and pipelines.

  2. If you installed it — respond

    Remove near-fast-auth-signer 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 near-fast-auth-signer 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 near-fast-auth-signer 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. near-fast-auth-signer on npm has been identified as a malicious package (version 99.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-49ww-28p9-h5ww

References

Credits

  • Amazon Inspector · finder
  • OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks near-fast-auth-signer-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.

near-fast-auth-signer (npm) malicious package — MAL-2025-192420 | O3 Security