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Malicious package

nwfp-build-confignpm

Advisory published Updated

nwfp-build-config is a confirmed malicious npm package (MAL-2026-18107) that steals credentials and exfiltrates sensitive data (malicious versions 0.0.0-stage, 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in nwfp-build-config (npm)

MAL-2026-18107
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall nwfp-build-config

What this malware does

On require() of nwfp-build-config, index.js loads lib/telemetry.js, which immediately runs an IIFE that reads the installer's hostname (os.hostname()) and username (os.userInfo().username), AES-256-CBC-encrypts the pair with a hardcoded 32-byte key, base32-encodes the ciphertext, splits it into DNS labels of up to 50 characters, and leaks the labels via dns.resolve4() queries to subdomains of cdn-assets.liderydigital.com, framed with start/end sentinel queries. The channel is a purpose-built covert DNS tunnel that bypasses HTTP egress controls; errors are swallowed in silent try/catch blocks. The destination is unrelated to the package's declared purpose of providing build configuration, and the 'telemetry' naming plus hardcoded encryption key are cover-story shaping around identity exfiltration.

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.

Malicious versions

2 flagged
0.0.0-stage1.0.0

Indicators of compromise (SHA-256)

905a5825cb8abf7b385b98cfade02c315a4bc776bc37cfacd5ab20d5b8d03640
918305da861c018c4d00872a3fbd1d88902de80581628ba62e66eb1a098ebe56

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for nwfp-build-config (2 malicious versions).

  2. If you installed it — respond

    nwfp-build-config 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 nwfp-build-config was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. nwfp-build-config on npm has been identified as a malicious package (versions 0.0.0-stage, 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-021546GHSA-fj85-27r8-hgfg

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks nwfp-build-config-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

nwfp-build-config (npm) malicious package — MAL-2026-18107 | O3 Security