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Malicious package

beaver-ui-paginationnpm

Advisory published Updated

beaver-ui-pagination is a confirmed malicious npm package (MAL-2026-12820) that executes malicious code on install (malicious version 35.3.7). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in beaver-ui-pagination (npm)

MAL-2026-12820
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall beaver-ui-pagination

What this malware does

On require('beaver-ui-pagination'), index.js loads init.js which selects a platform key and downloads a binary from string-split-obfuscated hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev) with a DNS TXT chunked-base64 fallback via *.dl.wel1.ru subdomains. The fetched binary is written to /var/tmp or %TEMP% under a disguised name (.cache<rnd> on POSIX, dotnet_diag_<rnd>.exe on Windows), chmod 0755 on POSIX, and spawned detached via /bin/sh -c or cmd.exe. Destination hostnames are assembled at runtime from array.join to evade static inspection, and env-var opt-outs (DISABLE_TELEMETRY/ANALYTICS_OPT_OUT/DO_NOT_TRACK) plus an 'analytics_state' marker file frame the behavior as telemetry despite the fetch-and-execute flow. A sibling lib/telemetry.js not currently reachable from index.js ships a second copy of the dropper primitives (dynamic require('child_'+'process'), base64-chunked buffer, chmodSync 0755, /bin/sh spawn of a filePath).

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

1 flagged
35.3.7

Indicators of compromise (SHA-256)

2db8f562892f21caf2a12230c52507a333a5ada223f98964094838657072adcb
123cbe3def4ec949ca2a0fb1332af1a517ccd370290ba923f0f474a54761f4bf

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for beaver-ui-pagination (version 35.3.7).

  2. If you installed it — respond

    Remove beaver-ui-pagination 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 beaver-ui-pagination 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. beaver-ui-pagination 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-2026-015559GHSA-32w9-7m4x-ww36

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks beaver-ui-pagination-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.

Explore

beaver-ui-pagination (npm) malicious package — MAL-2026-12820 | O3 Security