# MAL-2026-10028: Malicious code in @wagni_bot/metemask-sdk (npm)


- **Type:** Malicious package
- **Package:** `@wagni_bot/metemask-sdk` (npm)
- **Published:** 9 Jul 2026

## What is MAL-2026-10028?

MAL-2026-10028 is a malicious package in @wagni_bot/metemask-sdk, published on 9 Jul 2026. 

### Official description

The npm package `@wagni_bot/metemask-sdk` is a supply-chain credential stealer disguised as a **MetaMask (misspelled 'metemask')** SDK. It is one member of a coordinated campaign of 25 crypto/web3 typosquat packages published under the single npm scope `@wagni_bot` on 2026-07-09.

Each package declares a `postinstall` lifecycle hook (`postinstall: node postinstall.js`) that executes automatically on `npm install`, before the package is ever imported. The script fingerprints the host and user (`os.hostname()`, `os.userInfo()`, `os.platform()`), walks the user's home directory (`readdirSync`/`readFileSync`) and reads high-value secrets — SSH private keys (`~/.ssh/id_rsa`), cryptocurrency wallet files, and `.env` files (API keys, tokens, seed phrases). It then JSON-encodes the collected data and exfiltrates it to a hardcoded Telegram bot via the Telegram Bot API `sendMessage` endpoint (https://api.telegram.org/bot8804087989:AAHUia-5DCloXsg9M9QhffTsHO5J_6FAxQM/sendMessage). All error paths are swallowed so the install appears normal.

codelake Research proved the packages belong to one campaign deterministically: the payload file is byte-identical across all 25 packages at each published version (version-lockstep), and every package exfiltrates to the same Telegram bot token — a single automated actor. Detected and classified independently from the live npm feed on 2026-07-09; at the time of reporting the packages were still live on npm and none of the 25 were present in OSV or GHSA (a first-catch).

`@wagni_bot/metemask-sdk` is a single-character typosquat of the legitimate `metamask-sdk` package ("metemask" vs "metamask"). `index.js` is an empty stub (`module.exports = {}`); the package has no functional library code. Its sole effect is a `postinstall` hook (`postinstall.js`) that runs at `npm install` time and performs credential theft against the installer:

- Recursively walks `process.cwd()`, `os.homedir()`, and `~/.ssh`, reading files whose names match `.env`, `.cred`, `.pem`, `.key`, `mnemonic`, `seed`, `wallet`, `secret`, `id_rsa`, `id_ed25519`. This captures SSH private keys, crypto-wallet seed phrases/keystores, and dotenv secrets.
- Enumerates `process.env` and filters keys containing `PRIVATE`, `SECRET`, `TOKEN`, `API_KEY`, `PASSWORD`, `MNEMONIC`, `SEED`, `WALLET`, `AWS`, capturing their values.
- Collects host identifiers via `os.hostname()`, `os.userInfo()`, platform, and cwd.
- POSTs the harvested content (chunked) to `https://api.telegram.org/bot<hardcoded-token>/sendMessage` targeting attacker chat_id `892359416`.

This satisfies the attacker-benefit gate (bulk exfiltration of installer-owned SSH keys, wallet seeds, and credential env vars to an attacker-controlled Telegram channel) and auto-executes on default `npm install` via the `postinstall` lifecycle. The typosquat name targets developers intending to install MetaMask's SDK.

## What should I do about MAL-2026-10028?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-10028 is a malicious package: @wagni_bot/metemask-sdk (npm). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-10028/ (Markdown: https://insights.sbomify.com/MAL-2026-10028/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-10028

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-10028/
Summaries are generated and may contain mistakes; the official description above is the record.