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Part of a larger attack: @oku-ui published 43 malicious packages. See the full campaign →
Malicious package

@oku-ui/tooltipnpm

Advisory published Updated

@oku-ui/tooltip is a confirmed malicious npm package (MAL-2025-191281) that steals credentials and exfiltrates sensitive data (malicious version 0.6.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @oku-ui/tooltip (npm)

MAL-2025-191281
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @oku-ui/tooltip

What this malware does

The package @oku-ui/tooltip was found to contain malicious code.

This package was compromised by the Sha1-Hulud: The Second Coming NPM worm. The malicious payload steals tokens and credentials and publishes them to GitHub. The worm will propogate itself to NPM packages the user owns and establish persistence is a GitHub action. The package may also destroy the user's home directory.

Malicious versions

1 flagged
0.6.2

Indicators of compromise (SHA-256)

175bef9f0853369d02c775a8bb97db6573a5ff9283f4254c92c9f96f3b798d41
a877d67aa9ecc5ce75cbb742bfc5ec14376ac9423b13080e69cda80ce1f536e1

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for @oku-ui/tooltip (version 0.6.2).

  2. If you installed it — respond

    @oku-ui/tooltip is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

  3. Did it already run?

    If @oku-ui/tooltip 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. @oku-ui/tooltip on npm has been identified as a malicious package (version 0.6.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @oku-ui/tooltip-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

@oku-ui/tooltip (npm) malicious package — MAL-2025-191281 | O3 Security