# vxunderground/MalwareSourceCode

Collection of malware source code for a variety of platforms in an array of different programming languages.

Repository: https://github.com/vxunderground/MalwareSourceCode
Canonical: https://ross.abutalabs.com/products/malwaresourcecode
Homepage: https://vx-underground.org
Language: Assembly
License Family: other
Topics: malware, malware-research, malware-development, malware-detection
Last push: 2026-05-30T07:11:00+00:00

## Health v2 (maintenance only)
Score: 70/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 85, release rhythm 35, longevity 100
- inputs: {"age_days": 2153, "days_push": 95, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 18675, forks 2097 (observed 2026-08-28T04:11:27.014092+00:00)

## What it is
A large curated collection of malware source code spanning many platforms (Windows, Linux, Android, macOS, MS-DOS, PHP, Java, and more) and programming languages, maintained by vx-underground. It serves as a research reference archive for malware analysts, reverse engineers, and security researchers.

## Use cases
- study malware source code to learn how infectors and rootkits work
- research malware families like Mirai spin-offs for detection research
- build and test antivirus or EDR detection signatures against real malware implementations
- analyze historical ransomware and botnet code for academic papers
- find reference implementations of bootkits, crypters, and stealers
- collect phishing page samples for security awareness training

## When to choose
- you need a broad, organized archive of malware source across many platforms and languages
- you are a security researcher or malware analyst studying offensive techniques
- you want historical/legacy malware code (Win9x, MS-DOS, Symbian) for research
- you need reference samples to develop detection or reverse-engineering skills

## When to avoid
- you want production security tooling or defensive software to deploy
- you need a maintained library with a license permitting reuse in your own projects (no license is provided)
- you are looking for a sandbox or analysis platform rather than raw source code
- you cannot safely handle malicious code or lack authorization to study it

## Facets
- artifact type: dataset
- maturity: active
- function: security, reverse-engineering, developer-tools
- domain: security, penetration-testing, reverse-engineering, operating-systems
- platform: windows, cross-platform
- tags: malware, malware-research, malware-source-code, vx-underground, security-research, dataset, linux, macos, android

## Member repositories
- vxunderground/MalwareSourceCode (main) score 70

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:27.014092+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:01:20.391802+00:00, confidence not recorded.
  - readme: https://github.com/vxunderground/MalwareSourceCode (fetched 2026-08-28T04:11:27.014092+00:00, sha 1336546e8692)
- Data as of 2026-08-30T08:39:29.467469+00:00.