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Malicious package

cards-forms-clone-cards-core-clonenpm

Advisory published Updated

cards-forms-clone-cards-core-clone is a confirmed malicious npm package (MAL-2026-12524) that executes malicious code on install (malicious version 35.4.9). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in cards-forms-clone-cards-core-clone (npm)

MAL-2026-12524
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall cards-forms-clone-cards-core-clone

What this malware does

On require(), index.js loads platform.js, which selects a platform-specific asset URL from obfuscated hostnames assembled via split-then-join string fragments (oob-worker.cf102-baf.workers.dev, cf103-070, cf99-9b3, cf100-416 workers.dev hosts, plus a DNS-TXT chunked fallback to *.dl.wel1.ru), downloads the payload, writes it to a hidden temp file, chmods it 0755 (or names it dotnet_diag*.exe on Windows), and spawns it detached via /bin/sh -c or cmd.exe /c start /b. A stamp file named.analytics_state and env gates DISABLE_TELEMETRY/ANALYTICS_OPT_OUT/DO_NOT_TRACK provide a telemetry cover story; the package's advertised purpose is a base framework module unrelated to any such behavior. String-fragment obfuscation of the destination hosts and the masquerading filenames are deliberate evasion.

Malicious versions

1 flagged
35.4.9

Indicators of compromise (SHA-256)

74486d1afedd40c87c6d604f98ffda15100b2ee63af56e8f7330346d915269c9

Detection & response playbook

Malicious package

  1. Find it

    Search your lockfiles and build artifacts for cards-forms-clone-cards-core-clone (version 35.4.9).

  2. If you installed it — respond

    Remove cards-forms-clone-cards-core-clone 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 cards-forms-clone-cards-core-clone 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. cards-forms-clone-cards-core-clone on npm has been identified as a malicious package (version 35.4.9 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015252

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks cards-forms-clone-cards-core-clone-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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cards-forms-clone-cards-core-clone (npm) malicious package — MAL-2026-12524 | O3 Security