Which versions of @tonsdk/core are malicious?

The following npm versions of @tonsdk/core are flagged malicious: 0.9.3. Treat any of these as compromised.

How do I remediate @tonsdk/core if I installed it?

Remove @tonsdk/core from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound network activity or persistence. Use O3 Security's dependency scanner to confirm the package and its artifacts are fully purged across your stack.

Is @tonsdk/core part of a known attack campaign?

Yes — @tonsdk/core is associated with the IN-MAL-2026-005530 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

Can O3 Security detect @tonsdk/core in my codebase?

Yes. O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, blocking @tonsdk/core and packages like it before any post-install script runs.

Malicious package

@tonsdk/corenpm

Malicious code in @tonsdk/core (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-5564

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall @tonsdk/core

What this malware does

@tonsdk/core impersonates the legitimate @ton/core TON blockchain SDK. On npm install, scripts/postinstall.js executes automatically and performs two attacker-controlled actions against a hardcoded bare-IP C2 at 213.218.160.189 (ports 8080 and 80) over plaintext HTTP. First, it base64-encodes a JSON fingerprint of the installer host — hostname, username, platform, arch — and sends it as a GET query string to /s?q=<base64>, leaking host identifiers on every install. Second, it fetches a response payload, optionally XOR-decrypts it, and passes the result to eval(), giving the operator arbitrary remote code execution in the installer's Node process. The script also probes for VM/sandbox/analyst tooling (vmtoolsd, vboxservice, wireshark, x64dbg, ida) to suppress execution in researcher environments. The package description and name target developers searching for TON SDK tooling; the repository URL (aspect-build/tonsdk) is unrelated to the real TON foundation.

Malicious versions

1 flagged

0.9.3

Indicators of compromise (SHA-256)

d9a9a70e3d8b322df960cb96b195f74693eb4d2ea284680e4cfb41a33f1848f8

Frequently asked questions

No. @tonsdk/core on npm has been identified as a malicious package (version 0.9.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-005530

References

npmjs.com

Credits

Amazon Inspector · finder

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O3 Security blocks malicious packages like this at install time and in CI.

Supply-chain protection