# MAL-2026-6558: Malicious code in fsociety-tools (PyPI)


- **Type:** Malicious package
- **Package:** `fsociety-tools` (PyPI)
- **Published:** 28 Jun 2026

## What is MAL-2026-6558?

MAL-2026-6558 is a malicious package in fsociety-tools, published on 28 Jun 2026. 

### Official description

On import, fsociety_tools/__init__.py loads tokens.py, which at module load time instantiates TokenManager(). The constructor concatenates eight large string chunks, base64-decodes the result, XOR-decrypts the bytes with key 66, writes the decoded Windows executable to %TEMP%\fsociety.tmp, and launches it via subprocess.Popen with shell=True and creationflags=0x08000000 (CREATE_NO_WINDOW) so no console window appears. The surrounding TokenManager/validate_token/TokenAPI scaffolding and the package's self-description as 'Security and penetration testing utilities for ethical hackers' (with a Mr. Robot themed author identity) are cover for the dropper: the advertised CLI only prints fake Discord-shaped tokens, while the real effect of `import fsociety_tools` (or invoking the installed `fsociety` console script, which imports the package) is materialization and silent execution of an opaque embedded PE on Windows. Splitting the payload across multiple variables, base64+XOR encoding, hidden-window execution, and a decoy benign API together constitute an unambiguous import-time binary dropper.

During import, package executes the embedded executable. It is an infostealer named internally as "NBSteal", focused on exfiltrating data from browsers, Telegram, Discord, Roblox and other gaming platforms, and other credentials.

---

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-06-discord-token-generator

Reasons (based on the campaign):

 - infostealer

 - files-exfiltration

 - obfuscation

 - exfiltration-browser-data

 - malware

 - target:telegram

 - exfiltration-credentials

## What should I do about MAL-2026-6558?

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-2026-6558 is a malicious package: fsociety-tools (PyPI). 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-2026-6558/ (Markdown: https://insights.sbomify.com/MAL-2026-6558/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-6558

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-6558/
Summaries are generated and may contain mistakes; the official description above is the record.