# NYAN-x-CAT/AsyncRAT-C-Sharp

Open-Source Remote Administration Tool For Windows C# (RAT)

Repository: https://github.com/NYAN-x-CAT/AsyncRAT-C-Sharp
Canonical: https://ross.abutalabs.com/products/asyncrat-c-sharp
Language: C#
License: MIT
License Family: permissive
Topics: socket, tcp, rat, remote, admin, tool, asynchronous, backdoor, loader
Last push: 2023-10-16T21:41:12+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 2783, "days_push": 1052, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3008, forks 856 (observed 2026-08-28T04:07:37.723648+00:00)

## What it is
AsyncRAT is an open-source Remote Access Tool (RAT) written in C# that lets an operator remotely monitor and control Windows client machines over an encrypted TCP connection. It includes a plugin system, terminal access, screen viewing/recording, SFTP file transfer, keylogging, password recovery, and a configurable server with a binary builder and obfuscator.

## Use cases
- remotely administer Windows machines over an encrypted connection
- view and record a remote client's screen
- transfer files to and from remote clients via SFTP
- manage multiple clients through a terminal and chat window
- build and obfuscate custom client binaries
- extend remote functionality with a plugin system

## When to choose
- you are a security researcher studying RAT behavior or malware analysis
- you need a self-hosted remote administration tool for Windows machines you own or are authorized to test
- you want an extensible C# codebase to learn how remote access tools are built

## When to avoid
- you need a legitimate enterprise remote-desktop or MDM solution for production IT
- you lack explicit authorization to access the target systems - unauthorized use is illegal
- you need cross-platform client support beyond Windows
- you want a maintained tool with regular security updates

## Facets
- artifact type: application
- maturity: maintenance
- function: security, penetration-testing, reverse-engineering, plugin-system, networking
- domain: security, penetration-testing, windows, developer-tools
- platform: windows, dotnet, cross-platform
- tags: rat, remote-access, remote-administration, csharp, keylogger, screen-viewer, sftp, dual-use, offensive-security

## Member repositories
- NYAN-x-CAT/AsyncRAT-C-Sharp (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:37.723648+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 2026-08-29T18:47:23.220048+00:00, confidence not recorded.
  - readme: https://github.com/NYAN-x-CAT/AsyncRAT-C-Sharp (fetched 2026-08-28T04:07:37.723648+00:00, sha 1e6d030ed9e6)
- Data as of 2026-08-30T08:39:29.467469+00:00.