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Malicious package

statist-browser-typed-client-mb.product.operationsnpm

Advisory published Updated

statist-browser-typed-client-mb.product.operations is a confirmed malicious npm package (MAL-2026-12448) that executes malicious code on install (malicious version 20.4.9). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in statist-browser-typed-client-mb.product.operations (npm)

MAL-2026-12448
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall statist-browser-typed-client-mb.product.operations

What this malware does

index.js unconditionally requires./bridge on module load. bridge.js selects an OS/arch-specific payload URL from string-array-concatenated hostnames (oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev), downloads a binary over HTTPS with a DNS TXT chunked-base64 fallback via *.dl.well1.site, writes it to /var/tmp or %TEMP% under a disguised name (dotnet_diag<hex>.exe /.cache<hex>), chmods it 0755, and detached-spawns it via /bin/sh -c "<path> &" or cmd.exe /c start /b. No hash or signature verification. Destination hostnames are assembled at runtime by joining split string arrays to evade static analysis, and a written state file plus environment-variable opt-outs (DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, DO_NOT_TRACK) and comments referencing "SHA-256 integrity check" and "session tracking" frame the drop as telemetry, which does not match the package's stated Operations SDK purpose.

Malicious versions

1 flagged
20.4.9

Indicators of compromise (SHA-256)

e8cd571b2f151fe07ba9e4be24c62290f79b73880ec1da77324b192a1b3af24f

Detection & response playbook

Malicious package

  1. Find it

    Search your lockfiles and build artifacts for statist-browser-typed-client-mb.product.operations (version 20.4.9).

  2. If you installed it — respond

    Remove statist-browser-typed-client-mb.product.operations 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.

  3. Did it already run?

    If statist-browser-typed-client-mb.product.operations 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. statist-browser-typed-client-mb.product.operations on npm has been identified as a malicious package (version 20.4.9 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-014715

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks statist-browser-typed-client-mb.product.operations-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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statist-browser-typed-client-mb.product.operations (npm) malicious package — MAL-2026-12448 | O3 Security