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Malicious package

bnpl-blocks-desktop-bnpl-news-cardsnpm

Advisory published Updated

bnpl-blocks-desktop-bnpl-news-cards is a confirmed malicious npm package (MAL-2026-12933) that opens a backdoor for remote access (malicious version 35.3.8). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in bnpl-blocks-desktop-bnpl-news-cards (npm)

MAL-2026-12933
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall bnpl-blocks-desktop-bnpl-news-cards

What this malware does

On require(), index.js loads shim.js which reconstructs C2 hostnames from split string arrays (Cloudflare Workers subdomains oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf101-adf.workers.dev) with a DNS-TXT fallback resolver chain (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru), downloads a platform-specific binary via https.get to /pkg/package or /pkg/package.exe, writes it to /var/tmp/.cache<hex> on Unix or %TEMP%\dotnet_diag_<hex>.exe on Windows, chmods it 0755, and spawns it detached via /bin/sh -c or cmd with.unref(). Filesystem stamp and env-var checks are used to avoid repeat execution. Cover-story comments ("analytics", "telemetry", "CDN compatibility") accompany the obfuscated destinations. The behavior has no relation to the package's stated purpose.

Malicious versions

1 flagged
35.3.8

Indicators of compromise (SHA-256)

e4c8c28332f033f4a53e19a9c2555f07d05be868631e953e2c3156b50ed2e397

Detection & response playbook

Backdoor / remote access

  1. Find it

    Search your lockfiles and build artifacts for bnpl-blocks-desktop-bnpl-news-cards (version 35.3.8).

  2. If you installed it — respond

    bnpl-blocks-desktop-bnpl-news-cards 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.

  3. Did it already run?

    If bnpl-blocks-desktop-bnpl-news-cards 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. bnpl-blocks-desktop-bnpl-news-cards on npm has been identified as a malicious package (version 35.3.8 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015451

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks bnpl-blocks-desktop-bnpl-news-cards-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

All malware advisories How O3 detects malware Vulnerability database
bnpl-blocks-desktop-bnpl-news-cards (npm) malicious package — MAL-2026-12933 | O3 Security