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Malicious package

scrollbar-hide-pluginnpm

scrollbar-hide-plugin is a confirmed malicious npm package (MAL-2026-12192) that opens a backdoor for remote access (malicious version 1.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in scrollbar-hide-plugin (npm)

MAL-2026-12192
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall scrollbar-hide-plugin

What this malware does

The package's main entry (dist/index.js) appends an obfuscated payload — wrapped in eval(atob(...)) with require targets and URLs hidden in \uXXXX escapes — to an otherwise legitimate Tailwind scrollbar-hide plugin. When the package is required or imported, the payload queries Ethereum RPCs for transactions from a hardcoded address (0xa322e5f3d311d3080e6f0121063e9adc2490ef1a), decodes attacker IPv4 addresses from the transaction to field bytes, and fetches XOR-encoded JavaScript from those IPs on port 443 (paths /0x/cls and /0x/ls). The fetched code is then executed both via eval in-process and via spawn('node', ['-e',...], {detached:true}).unref() as a detached child process. The C2 destinations are resolved dynamically from on-chain data, so the operator can rotate infrastructure without republishing the package. The name resembles the legitimate tailwind-scrollbar-hide package (reslear/tailwind-scrollbar-hide), consistent with a name-squat trojan.

Malicious versions

1 flagged
1.0.1

Indicators of compromise (SHA-256)

4f19e1731b591552a096b108703702b9663c1bbb8cf9c2ff6fc048f8582e8607

Detection & response playbook

Backdoor / remote access
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for scrollbar-hide-plugin (version 1.0.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging scrollbar-hide-plugin across your stack and pipelines.

  2. If you installed it — respond

    scrollbar-hide-plugin 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 scrollbar-hide-plugin was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks scrollbar-hide-plugin before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. scrollbar-hide-plugin on npm has been identified as a malicious package (version 1.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-014579

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks scrollbar-hide-plugin-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Explore

scrollbar-hide-plugin (npm) malicious package — MAL-2026-12192 | O3 Security