# bytecode77/r77-rootkit

Fileless ring 3 rootkit with installer and persistence that hides processes, files, network connections, etc.

Repository: https://github.com/bytecode77/r77-rootkit
Canonical: https://ross.abutalabs.com/products/r77-rootkit
Homepage: https://bytecode77.com/r77-rootkit
Language: C
License: MIT
License Family: permissive
Topics: rootkit, fileless, av-evasion
Last push: 2026-07-28T21:05:39+00:00

## Health v2 (maintenance only)
Score: 75/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 94, release rhythm 35, longevity 100
- inputs: {"age_days": 3181, "days_push": 36, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2191, forks 460 (observed 2026-08-28T04:06:24.201612+00:00)

## What it is
r77 is a fileless ring 3 (userland) rootkit for Windows that hides files, processes, registry keys, services, and network connections using a configurable prefix-based hiding system. It includes an installer with persistence, shellcode-based fileless deployment, and AV/EDR evasion techniques such as AMSI bypass and ntdll unhooking.

## Use cases
- hide processes from task manager
- study rootkit techniques on windows
- test EDR detection of fileless malware
- hide files and registry keys by prefix
- evaluate antivirus evasion via AMSI bypass
- research userland rootkit injection methods

## When to choose
- you need an open-source reference rootkit for security research or red-team training
- you want to test AV/EDR detection capabilities against fileless techniques
- you need a configurable userland hiding mechanism on Windows

## When to avoid
- you need a kernel-mode (ring 0) rootkit
- you want defensive-only tooling without offensive capabilities
- your target platform is Linux or macOS
- you require stealth against hardened, modern EDR environments

## Facets
- artifact type: application
- maturity: active
- function: security, reverse-engineering, penetration-testing
- domain: security, penetration-testing, windows, operating-systems
- platform: windows, c
- tags: rootkit, fileless, av-evasion, amsi-bypass, dll-unhooking, process-hiding, red-team, userland-rootkit

## Member repositories
- bytecode77/r77-rootkit (main) score 75

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:24.201612+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 2026-08-30T02:47:35.387786+00:00, confidence not recorded.
  - readme: https://github.com/bytecode77/r77-rootkit (fetched 2026-08-28T04:06:24.201612+00:00, sha 4c347c0dd01f)
  - homepage: https://bytecode77.com/r77-rootkit (fetched 2026-08-29T10:27:49.064340+00:00, sha 69125d193a25)
- Data as of 2026-08-30T08:39:29.467469+00:00.