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Malicious package

create-coinnpm

Advisory published Updated

create-coin is a confirmed malicious npm package (MAL-2026-14372) that steals credentials and exfiltrates sensitive data (malicious version 20.1.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in create-coin (npm)

MAL-2026-14372
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall create-coin

What this malware does

Package [email protected] registers a postinstall hook that runs build/payload.node.js during npm install. The script performs anti-analysis guards (bails out on CI/GitHub Actions env vars, /.dockerenv, container cgroups, or fewer than four environment variables), sleeps a randomized 10-30 seconds, then reads the installer's ~/.npmrc (or %USERPROFILE%.npmrc), enumerates every process.env entry, and reads project files including package.json, package-lock.json,.env, and src/config.*. It also collects host reconnaissance via os.hostname(), os.userInfo(), and child_process output of uname/id, plus open localhost port probes. All collected data is POSTed over HTTPS to the hardcoded endpoint https://random-name.trycloudflare.com with rejectUnauthorized:false, and a.ran lock file is written for idempotency. Exceptions are swallowed and exit code is forced to 0 so npm install appears successful. The package.json description claims the package is a "netbsd-x64 build for esbuild" while the shipped code has no relationship to esbuild, indicating typosquat / platform-package impersonation of the esbuild family.

Malicious versions

1 flagged
20.1.1

Indicators of compromise (SHA-256)

d92da1d80f455caae769107e4b3ff99c003a296f1238728cfc5521d5be06c380

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for create-coin (version 20.1.1).

  2. If you installed it — respond

    create-coin 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 create-coin 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. create-coin on npm has been identified as a malicious package (version 20.1.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-018572

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks create-coin-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

create-coin (npm) malicious package — MAL-2026-14372 | O3 Security