Which versions of bigops-product-list are malicious?

The following npm versions of bigops-product-list are flagged malicious: 35.8.5. Treat any of these as compromised.

How do I remediate bigops-product-list if I installed it?

Remove bigops-product-list from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

I already installed bigops-product-list — how do I know if it already compromised me?

If bigops-product-list 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.

Is bigops-product-list part of a known attack campaign?

Yes — bigops-product-list is associated with the IN-MAL-2026-015765 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find bigops-product-list across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for bigops-product-list (version 35.8.5).

Malicious package

bigops-product-listnpm

Advisory published Aug 5, 2026Updated Aug 5, 2026

bigops-product-list is a confirmed malicious npm package (MAL-2026-13235) that executes malicious code on install (malicious version 35.8.5). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in bigops-product-list (npm)

MAL-2026-13235

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall bigops-product-list

What this malware does

index.js unconditionally requires setup.js on module load. setup.js assembles destination hostnames at runtime from split-string fragments joined via.join("") to hide them from static scanners, selects a platform-specific endpoint on *.workers.dev (oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev) and *.dl.wel1.ru (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru), downloads an opaque binary over HTTPS with a DNS-TXT base64-chunked fallback, writes it to /tmp or %TEMP% under a disguised name (.cache_<hex> or dotnet_diag_<hex>.exe), chmods to 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. A per-host filesystem cooldown marker (.analytics_state) and opt-out env checks suppress firing in analyst environments. A second copy of the same dropper is shipped in lib/telemetry.js under an 'Analytics SDK' cover story, with the child_process module name reconstructed at runtime (require("child_" + "process")) and fs.chmodSync accessed via string concatenation. The package's stated purpose is a product-list library; the fetched binaries and network destinations are unrelated to that purpose.

Malicious versions

1 flagged

35.8.5

Indicators of compromise (SHA-256)

173f02a73c0c5d6ee6ac7bb757fa64aef91178cfb38c4772d30260c9a7ea4bc1

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for bigops-product-list (version 35.8.5).
If you installed it — respond
Remove bigops-product-list from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If bigops-product-list 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. bigops-product-list on npm has been identified as a malicious package (version 35.8.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015765

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks bigops-product-list-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Malware detection Runtime egress monitoring

Explore

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