MalwarePublished 9 Jun 2026Updated 9 Jul 2026

blockchain-helper-0 (npm) · Malicious Code

Affects blockchain-helper-0Source GCVE Database

Malicious package : remove blockchain-helper-0 and rotate any secrets on hosts that installed it.

Data as of 11 Jul 2026, 09:43 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-5352

What to do

Remove blockchain-helper-0 from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npmblockchain-helper-0	Affected =1.0.0	Fixed in–

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Description

**Note:** *This report is updated by a verification record* Crypto/SSH/wallet stealer (self-labeled "CRYPTO STEALER"). postinstall scripts/postinstall.js auto-execs, src/index.js harvests ~/.ssh/id_rsa + wallet keys/seeds + env and exfils to hardcoded Telegram bot 8227918239:AAGEMDrBZluDsBBYPxfSyMuv2l3FY8cZCcs chat 6433587894. Auto-exec + hardcoded attacker Telegram exfil; "blockchain-helper" identity has no reason to read SSH/wallet keys. --- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (8b9fac34e13ad38cb702f7aad434d18aa276005fe5fa4cbe48c7eb65af26623d) The package was found to contain malicious code or consuming dependency that contains malicious code

Impact

Users who install version 1.0.0 of 'blockchain-helper-0' risk having their SSH private keys, cryptocurrency wallet keys and seeds, and environment variables stolen and sent to an attacker-controlled Telegram bot. This can lead to unauthorized access to user systems, theft of cryptocurrency assets, and compromise of sensitive environment data. There are no known exploits in the wild beyond the package itself being malicious.

Defensive guidance

Avoid installing or using the 'blockchain-helper-0' package version 1.0.0. Remove any installations of this package immediately. Monitor for unauthorized access to systems and wallets associated with compromised keys. Exercise caution when installing npm packages from untrusted sources.

Summary

The 'blockchain-helper-0' npm package version 1.0.0 includes malicious code that runs automatically during installation via a postinstall script. The malicious code collects sensitive data including the user's SSH private key (~/.ssh/id_rsa), cryptocurrency wallet keys and seeds, and environment variables. It then sends this stolen information to a hardcoded Telegram bot (ID: 8227918239:AAGEMDrBZluDsBBYPxfSyMuv2l3FY8cZCcs) and chat (6433587894). This package's identity and purpose do not justify access to such sensitive data, indicating clear malicious intent. The package was flagged by Amazon Inspector and is listed in the GCVE database as a malicious package.

References

Community reviews

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What to do

Affected software

Description

AI analysisMachine-generated, updated 10 Jul 2026, 09:41 UTC

Technical details

References

Community reviews