bnpl-blocks-independent-bnpl-breadcrumbsnpm
bnpl-blocks-independent-bnpl-breadcrumbs is a confirmed malicious npm package (MAL-2026-12950) that steals credentials and exfiltrates sensitive data (malicious version 35.6.6). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in bnpl-blocks-independent-bnpl-breadcrumbs (npm)
What this malware does
On require of the package, index.js unconditionally loads setup.js, which downloads an opaque binary from one of four hardcoded *.workers.dev endpoints (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT base64 fallback via resolvers under dl.wel1.ru (sdk./ext./pkg./net.). Hostnames and resolver domains are assembled at runtime from split-string fragments to evade static analysis. The downloaded bytes are written to a temporary path under a deceptive name (.cache_<hex> on Unix, dotnet_diag_<hex>.exe on Windows), chmodded 0755, and detach-spawned via /bin/sh -c "<path> &" or cmd.exe /c start. Cover-story environment variables (DISABLE_TELEMETRY, ANALYTICS_OPT_OUT) and cache/diagnostic naming disguise the dropper as telemetry. Reachable on first require() of the package; no user opt-in required.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for bnpl-blocks-independent-bnpl-breadcrumbs (version 35.6.6). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging bnpl-blocks-independent-bnpl-breadcrumbs across your stack and pipelines.
If you installed it — respond
bnpl-blocks-independent-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.
Did it already run?
If bnpl-blocks-independent-bnpl-breadcrumbs 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.
How O3 protects you
O3 blocks bnpl-blocks-independent-bnpl-breadcrumbs 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
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks bnpl-blocks-independent-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.