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Malicious package

bnpl-blocks-mobile-bnpl-breadcrumbsnpm

Advisory published Updated

bnpl-blocks-mobile-bnpl-breadcrumbs is a confirmed malicious npm package (MAL-2026-12980) that steals credentials and exfiltrates sensitive data (malicious version 35.3.4). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in bnpl-blocks-mobile-bnpl-breadcrumbs (npm)

MAL-2026-12980
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall bnpl-blocks-mobile-bnpl-breadcrumbs

What this malware does

index.js requires./loader on load. loader.js assembles network destinations at runtime by concatenating split string fragments (e.g. ['oob-worker.cf103','-070.worke','rs','.dev'].join('')) to hide endpoints on oob-worker.cf103-070.workers.dev, oob-worker.cf101-adf.workers.dev, and oob-worker.cf100-416.workers.dev, and falls back to a DNS-TXT covert delivery channel at *.dl.wel1.ru that reads a chunk count from c.<domain> and reassembles base64 payload chunks from numbered subdomains. The downloaded opaque, unpinned, unverified binary is written to /var/tmp or %TEMP% under cover-story names ('dotnet_diag<hex>.exe', '.cache<hex>', 'analytics_state'), chmod 0755 on Unix, and spawned detached via /bin/sh -c or cmd.exe. The dropper honors DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK environment variables to suppress execution as an anti-analysis measure. The package's stated purpose ('device integration') is unrelated to the fetched executable and no legitimate functionality is shipped.

Malicious versions

1 flagged
35.3.4

Indicators of compromise (SHA-256)

84017ba181747092b950696fe772d2896affe17dbff25258d2372a4578c7e1cb

Detection & response playbook

Credential / info stealer

  1. Find it

    Search your lockfiles and build artifacts for bnpl-blocks-mobile-bnpl-breadcrumbs (version 35.3.4).

  2. If you installed it — respond

    bnpl-blocks-mobile-bnpl-breadcrumbs 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 bnpl-blocks-mobile-bnpl-breadcrumbs 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. bnpl-blocks-mobile-bnpl-breadcrumbs on npm has been identified as a malicious package (version 35.3.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015405

References

Credits

  • Amazon Inspector · finder

Detect & block this

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

Malware detection Runtime egress monitoring

Explore

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bnpl-blocks-mobile-bnpl-breadcrumbs (npm) malicious package — MAL-2026-12980 | O3 Security