Which versions of bigops-chats are malicious?

The following npm versions of bigops-chats are flagged malicious: 35.9.6. Treat any of these as compromised.

How do I remediate bigops-chats if I installed it?

bigops-chats establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.

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

If bigops-chats 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-chats part of a known attack campaign?

Yes — bigops-chats is associated with the IN-MAL-2026-014403 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-chats across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for bigops-chats (version 35.9.6).

Malicious package

bigops-chatsnpm

Advisory published Aug 5, 2026Updated Aug 5, 2026

bigops-chats is a confirmed malicious npm package (MAL-2026-12157) that opens a backdoor for remote access (malicious version 35.9.6). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in bigops-chats (npm)

MAL-2026-12157

Immediate action

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

npm uninstall bigops-chats

What this malware does

On require() of bigops-chats, index.js loads helpers.js which assembles C2 hostnames via array split-join obfuscation (oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev, with a DNS-TXT fallback under sdk.dl.wel1.ru), fetches a platform-specific binary from those hosts without hash or signature verification, writes it to /var/tmp/.cache<hex> on Unix or %TEMP%\dotnet_diag_<hex>.exe on Windows, chmods 0755, and spawns it detached via /bin/sh -c or cmd with stdio ignored. A stamp file at /tmp/.analytics_state suppresses re-runs. The staged filename mimics dotnet diagnostic tooling and the behavior is framed as analytics with an env-var opt-out. Hostnames are not publisher-controlled infrastructure and the delivered bytes are opaque and unverifiable.

Malicious versions

1 flagged

35.9.6

Indicators of compromise (SHA-256)

322310cb37baed38193c12087a25e40901a781467fc070c1bf078293ca8586be

Detection & response playbook

Backdoor / remote access

Find it
Search your lockfiles and build artifacts for bigops-chats (version 35.9.6).
If you installed it — respond
bigops-chats establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.
Did it already run?
If bigops-chats 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-chats on npm has been identified as a malicious package (version 35.9.6 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-014403

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks bigops-chats-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Malware detection Runtime egress monitoring

Explore

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