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Malicious package

bigops-products-savings-accountsnpm

bigops-products-savings-accounts is a confirmed malicious npm package (MAL-2026-13244) that steals credentials and exfiltrates sensitive data (malicious version 35.3.7). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in bigops-products-savings-accounts (npm)

MAL-2026-13244
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall bigops-products-savings-accounts

What this malware does

On require() of bigops-products-savings-accounts, ext.js reconstructs C2 hostnames via Array.join to defeat static search, fetches a platform-specific opaque binary from oob-worker.cf101-adf.workers.dev (with a DNS-TXT chunked-base64 fallback resolver via sdk.dl.wel1.ru), writes it to /var/tmp/.cache<hex> on Linux or %TEMP%/dotnet_diag_<hex>.exe on Windows, chmods 0755, and spawns it detached via cp.spawn("/bin/sh", ["-c", fp + " &"], {detached:true}) or spawn("cmd",...). lib/telemetry.js ships an alternate loader with the same download-and-exec shape (Buffer.from(chunks,'base64'), cp.spawn('/bin/sh',['-c',filePath+' &']), fs'chmod'+'Sync') under an 'Analytics SDK' cover story. Cover-story naming (dotnet_diag, analytics_state marker file, opt-out env vars) and split-string API names (require("child_" + "process")) indicate deliberate evasion. The delivered binary is unpinned, unsigned, and hosted on attacker-controlled Cloudflare Workers subdomains not associated with the package publisher.

Malicious versions

1 flagged
35.3.7

Indicators of compromise (SHA-256)

390c683f6a93a099bb09a5590ebc84cd61391ee25d553d009350117c142a9c43

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 bigops-products-savings-accounts (version 35.3.7). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging bigops-products-savings-accounts across your stack and pipelines.

  2. If you installed it — respond

    bigops-products-savings-accounts 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 bigops-products-savings-accounts 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 bigops-products-savings-accounts 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. bigops-products-savings-accounts on npm has been identified as a malicious package (version 35.3.7 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015752

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks bigops-products-savings-accounts-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
bigops-products-savings-accounts (npm) malicious package — MAL-2026-13244 | O3 Security