🛡️ MAL-2026-12056 — mnemonic-to-key

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Malicious code in @zzzgenesis00/mnemonic-to-key (npm)

Source: amazon-inspector

On npm install, postinstall.js executes and enumerates installer-side secrets: files under ~/.ssh (non-.pub private keys), ~/.npmrc, ~/.gitconfig, Chrome/Chromium/Firefox profile stores (Cookies, Login Data, key4.db), and cryptocurrency wallet directories (.bitcoin,.ethereum,.solana,.metamask,.exodus,.electrum, and similar). It also runs npm whoami and git config user.email and reads a list of credential-shaped environment variables including NPM_TOKEN, NODE_AUTH_TOKEN, GITHUB_TOKEN, AWS keys, MNEMONIC, SEED_PHRASE, ETHEREUM_PRIVATE_KEY, and WALLET_PRIVATE_KEY. The collected data is sent via HTTPS GET to api.telegram.org using a hardcoded bot token and chat_id, with a backup POST to a hardcoded subdomain of serveousercontent.com at path /collect. The postinstall file is disguised with a module.exports = require('./index.js') passthrough and a header comment describing it as environment verification, and exfiltration is delayed with a randomized 1.5–3.5s timer to run after install output completes. Behavior is unrelated to the package's advertised mnemonic-to-key purpose.

Affected software

MAL-2026-12056 is recorded against 1 package.

  • @zzzgenesis00/mnemonic-to-key

Timeline and source

Published on 5 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.npmjs.com (Package)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-08-05
Updated 2026-08-12
Modified 2026-08-05
Fix URL N/A

Affected Packages

Software From version Fixed in
@zzzgenesis00/mnemonic-to-key — —

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