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Malicious package

ksp-appnpm

Advisory published Updated

ksp-app is a confirmed malicious npm package (MAL-2026-17770) that steals credentials and exfiltrates sensitive data (malicious version 100.100.100). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in ksp-app (npm)

MAL-2026-17770
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall ksp-app

What this malware does

[email protected] is a dependency-confusion-shaped npm package whose only payload is an opaque prebuilt Linux x64 native addon loaded at install time. package.json declares scripts.postinstall="node postinstall.js", which require()s prebuilds/linux-x64/addon.node. The tarball ships no C/C++ source, no binding.gyp, and no build tooling; index.js exports an empty object, so the entire package behavior is in the native binary. On load, the ELF addon reads the environment variables HOSTNAME, npm_package_name, and npm_config_registry and POSTs them over a raw socket to the hardcoded bare-IP endpoint http://64.181.165.115/dc (HTTP/1.0, Host: 64.181.165.115, format string h=%.40s&p=%.40s&u=%.20s&r=%.80s). The version string 100.100.100, inert JS stub, generic "Frontend utilities" description, and a beacon that reports the installer's configured npm registry are the signature of a dependency-confusion exfiltration package used to confirm installs inside victim environments and disclose internal registry URLs to a third party.

Malicious versions

1 flagged
100.100.100

Indicators of compromise (SHA-256)

b14a9fbd9fc1a48dc3ac0498f9606cecb1a56bad912c7f8a818fad332ef9ad15

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for ksp-app (version 100.100.100).

  2. If you installed it — respond

    ksp-app 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 ksp-app 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. ksp-app on npm has been identified as a malicious package (version 100.100.100 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-021424

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks ksp-app-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

ksp-app (npm) malicious package — MAL-2026-17770 | O3 Security