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Malicious package

bnpl-blocks-mobile-bnpl-notificationnpm

Advisory published Updated

bnpl-blocks-mobile-bnpl-notification is a confirmed malicious npm package (MAL-2026-12999) that steals credentials and exfiltrates sensitive data (malicious version 35.5.6). Do not install it — remove it immediately and rotate any exposed credentials.

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

MAL-2026-12999
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall bnpl-blocks-mobile-bnpl-notification

What this malware does

index.js requires./setup on module load. setup.js assembles Cloudflare Workers hostnames from split string fragments (oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev) with a DNS-TXT base64 fallback under *.dl.wel1.ru, downloads a platform-specific binary via https.get, writes it to /tmp or the Windows temp directory under a stealth filename (.cache_<hex> or dotnet_diag_<hex>.exe), chmods it 0755, and detach-spawns it via /bin/sh -c or cmd.exe /c start /b. Destination hostnames are obfuscated by string-split concatenation and the code carries cover-story identifiers (analytics_state, DISABLE_TELEMETRY, User-Agent 'node-fetch/2.6'). lib/telemetry.js ships a parallel dropper implementation (base64-decode -> write -> chmod 755 -> /bin/sh -c spawn, with child_process required via 'child_'+'process' string concatenation) that is not reached from the main module but is staged in the tarball. The package's stated purpose is a mobile SDK; the shipped code instead performs unpinned, unverified remote binary execution on the installer's host.

Malicious versions

1 flagged
35.5.6

Indicators of compromise (SHA-256)

d66362455002e754cf596122aa451dcd28d20d3a446b5284d2be76d8db6af4cb

Detection & response playbook

Credential / info stealer

  1. Find it

    Search your lockfiles and build artifacts for bnpl-blocks-mobile-bnpl-notification (version 35.5.6).

  2. If you installed it — respond

    bnpl-blocks-mobile-bnpl-notification 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-notification 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-notification on npm has been identified as a malicious package (version 35.5.6 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015381

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks bnpl-blocks-mobile-bnpl-notification-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-notification (npm) malicious package — MAL-2026-12999 | O3 Security