# malware-detection-and-reporting

This skill flags repositories that disguise malware as legitimate security software and helps assemble evidence for a report.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 851 installs · ★ 12
- Author: reason-machines
- License: LicenseRef-Unknown · policy=link-only · description only; the file stays with the author
- Source: https://github.com/reason-machines/security-skills/tree/HEAD/skills/malware-detection-and-reporting/SKILL.md
- Updated: 2026-10-09
- HTML: https://affpapa.org/en/nevibecode/skills/malware-detection-and-reporting

## What it does

The skill examines repository signals such as cracked or keygen offers for commercial software, risky topics like `defender-bypass` and `rootkit`, missing implementation files, unusual engagement, and `.exe`, `.dll`, or `.scr` files without source. It also checks for the `NOASSERTION` license marker and known antivirus names.

Its examples include a Go analyzer that gathers suspicious keywords and topics, then computes a risk score. Other code calls the GitHub API and builds an evidence report containing the repository description, topics, star count, creation date, and selected indicators.

The `curl` example sends authentication through `GITHUB_TOKEN`; that variable is needed for the token-based request. Reporting guidance covers GitHub’s web flow, including abuse or content reports and the malware distribution or phishing categories.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add reason-machines/security-skills --skill malware-detection-and-reporting -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/malware-detection-and-reporting/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/malware-detection-and-reporting/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add reason-machines/security-skills --skill malware-detection-and-reporting -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/malware-detection-and-reporting/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add reason-machines/security-skills --skill malware-detection-and-reporting -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/malware-detection-and-reporting/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install reason-machines/security-skills malware-detection-and-reporting
```

2. **Manually: put the files in place**
- File: `.github/skills/malware-detection-and-reporting/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add reason-machines/security-skills --skill malware-detection-and-reporting -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/reason-machines/security-skills --path skills/malware-detection-and-reporting
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/malware-detection-and-reporting/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add reason-machines/security-skills --skill malware-detection-and-reporting -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/reason-machines/security-skills/tree/HEAD/skills/malware-detection-and-reporting/SKILL.md

## When to use it
- flag a repository that may distribute malware
- inspect descriptions and topics for risky indicators
- collect repository evidence through the GitHub API
- draft facts for a GitHub abuse report
- separate cracked-software projects from real source repositories

## Example prompts
- Check this repository for signs of malware distribution and list the evidence.
- Inspect the project description and topics, then calculate its risk score.
- Collect repository details through the GitHub API and prepare a report for GitHub.

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From the same set: [reason-machines/security-skills](https://affpapa.org/en/nevibecode/by/reason-machines/security-skills.md) — 42 cards

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NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md