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Malicious package

3pool-sushibarnpm

Advisory published Updated

3pool-sushibar is a confirmed malicious npm package (MAL-2026-3673) that opens a backdoor for remote access (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in 3pool-sushibar (npm)

MAL-2026-3673
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall 3pool-sushibar

What this malware does

This package is a dependency-chain dropper. package.json declares 15 undocumented dependencies in three numbered families (web3chain02032*, rusttool0701*, btc202523*) pinned to ^1.1.1, none of which appear in the README that describes a standalone Go miner. The bundled tranpack.sh proves the campaign: an infinite loop that rewrites package.json's name from a ~500-word crypto/DeFi wordlist and runs npm publish, and the current name 3pool-sushibar is an output of that generator. The package itself is non-functional — the declared main entry index.js does not exist — confirming that its only purpose is to pull in attacker-controlled siblings. Two undocumented 22MB Windows.exe binaries with mismatched hashes further contradict the README's source-only build story. Running npm install 3pool-sushibar fetches 15 attacker-controlled packages whose code is one hop away from inspection here; this is direct installer harm via namespace-abuse plus typosquat lure.

Malicious versions

1 flagged
1.0.0

Indicators of compromise (SHA-256)

5112bb2ea3570e56be6525c48ef026624f46dead693e78333696273c911c6c42

Detection & response playbook

Backdoor / remote access
  1. Find it

    Search your lockfiles and build artifacts for 3pool-sushibar (version 1.0.0).

  2. If you installed it — respond

    3pool-sushibar 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 3pool-sushibar 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. 3pool-sushibar on npm has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-002166

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks 3pool-sushibar-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

3pool-sushibar (npm) malicious package — MAL-2026-3673 | O3 Security