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Malicious package

dolyame-boxy-mobile-bnpl-button-setnpm

Advisory published Updated

dolyame-boxy-mobile-bnpl-button-set is a confirmed malicious npm package (MAL-2026-13337) that executes malicious code on install (malicious version 35.8.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in dolyame-boxy-mobile-bnpl-button-set (npm)

MAL-2026-13337
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall dolyame-boxy-mobile-bnpl-button-set

What this malware does

On require, index.js loads shim.js which selects a platform-specific endpoint from a set of runtime-assembled Cloudflare Workers hosts (oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS-TXT base64 fallback under sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. Hostnames are hidden by splitting across array fragments joined at runtime. shim.js downloads an opaque binary payload with no hash or signature verification, writes it to /tmp or %TEMP% under decoy filenames (dotnet_diag<rand>.exe on Windows,.cache<rand> on Unix), chmods it 0755, and spawns it detached via cmd.exe /c start or /bin/sh -c '<file> &'. A marker file analytics_state/.analytics_state is written, stderr logging is suppressed, and environment opt-outs (DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, DO_NOT_TRACK) frame the dropper as telemetry. A dormant 81 KB lib/telemetry.js contains a parallel download-write-chmod-spawn code path with base64 payload reassembly, not currently referenced. The declared purpose of the package (a BNPL button UI component) does not require fetching or executing native binaries.

Malicious versions

1 flagged
35.8.1

Indicators of compromise (SHA-256)

ce4829363e0b5248ca374f2bd545b219d5235bbc96936ba5bd9d06f369878538

Detection & response playbook

Malicious package

  1. Find it

    Search your lockfiles and build artifacts for dolyame-boxy-mobile-bnpl-button-set (version 35.8.1).

  2. If you installed it — respond

    Remove dolyame-boxy-mobile-bnpl-button-set 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 dolyame-boxy-mobile-bnpl-button-set 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. dolyame-boxy-mobile-bnpl-button-set on npm has been identified as a malicious package (version 35.8.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015655

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks dolyame-boxy-mobile-bnpl-button-set-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

All malware advisories How O3 detects malware Vulnerability database
dolyame-boxy-mobile-bnpl-button-set (npm) malicious package — MAL-2026-13337 | O3 Security