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Malicious package

ganache-cli-providernpm

Advisory published Updated

ganache-cli-provider is a confirmed malicious npm package (MAL-2026-4243) that opens a backdoor for remote access (malicious version 1.7.51). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in ganache-cli-provider (npm)

MAL-2026-4243
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall ganache-cli-provider

What this malware does

Package name impersonates the widely-used ganache-cli Ethereum development tool but ships only a 138-byte index.js stub that wraps ethers.getDefaultProvider — none of the advertised Ganache functionality is implemented. The package's only real behavior is a postinstall hook in package.json that runs an inline node -e script issuing an HTTPS GET to rqnyz-2605-7280-7--2000-c51.run.pinggy-free.link/npm/-/binary/telemetry. Pinggy free-tunnel hostnames are user-created ephemeral tunnels (operator-controlled endpoints), and the URL path is crafted to mimic npm registry telemetry. The fetch reveals the installer's IP and User-Agent to the operator and confirms successful execution on the host; errors are silently swallowed via try/catch. The combination of typosquat name, sham implementation, and install-time beacon to an anonymous tunnel matches the name-squat dropper / install-time reconnaissance pattern.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

1 flagged
1.7.51

Indicators of compromise (SHA-256)

9c84ea63480d182abd75e9f993c83905bbc216a0b0d662ad049da1241548b598
144bbaf975156b3114f5526a7e9a8ffbe8eb411a541c7e457b7bf444200a02c5

Detection & response playbook

Backdoor / remote access
  1. Find it

    Search your lockfiles and build artifacts for ganache-cli-provider (version 1.7.51).

  2. If you installed it — respond

    ganache-cli-provider 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 ganache-cli-provider 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. ganache-cli-provider on npm has been identified as a malicious package (version 1.7.51 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-hfp4-5fx7-5mwmIN-MAL-2026-003314

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks ganache-cli-provider-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

ganache-cli-provider (npm) malicious package — MAL-2026-4243 | O3 Security