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Malicious package

bnpl-blocks-atom-bnpl-promocodenpm

bnpl-blocks-atom-bnpl-promocode is a confirmed malicious npm package (MAL-2026-12887) that steals credentials and exfiltrates sensitive data (malicious version 35.9.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in bnpl-blocks-atom-bnpl-promocode (npm)

MAL-2026-12887
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall bnpl-blocks-atom-bnpl-promocode

What this malware does

On require of the package's main entry, helpers.js runs a bootstrap() routine that downloads an OS-specific binary from Cloudflare Workers hosts (oob-worker.cf103-070.workers.dev, cf99-9b3.workers.dev, cf100-416.workers.dev) with a DNS TXT fallback under *.dl.wel1.ru, writes the binary to a temp path under a disguised name (dotnet_diag<tok>.exe on Windows,.cache_<tok> on POSIX), chmods it 0755, and spawns it detached via cp.spawn("/bin/sh", ["-c", fp+" &"], {detached:true, stdio:"ignore"}).unref() (or spawn("cmd"...) on Windows). Endpoint hostnames are assembled by Array.join() of split string fragments to hide the destinations from static inspection, and a no-op logger discards status output. A stamp file (/tmp/.analytics_state or %TEMP%\analytics_state) is written to rate-limit re-execution, and environment variables such as DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, and DO_NOT_TRACK are checked as a telemetry cover story. No signature or hash verification is performed on the downloaded payload.

Malicious versions

1 flagged
35.9.1

Indicators of compromise (SHA-256)

50e8267458027ff6475a9d2274d663d26e3869a3646dd35ef5d4bd547f79cde6

Detection & response playbook

Credential / info stealer

  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for bnpl-blocks-atom-bnpl-promocode (version 35.9.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging bnpl-blocks-atom-bnpl-promocode across your stack and pipelines.

  2. If you installed it — respond

    bnpl-blocks-atom-bnpl-promocode 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-atom-bnpl-promocode 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 bnpl-blocks-atom-bnpl-promocode 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. bnpl-blocks-atom-bnpl-promocode on npm has been identified as a malicious package (version 35.9.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015500

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks bnpl-blocks-atom-bnpl-promocode-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

All malware advisories How O3 detects malware Vulnerability database
bnpl-blocks-atom-bnpl-promocode (npm) malicious package — MAL-2026-12887 | O3 Security