# ldpreload/BlackLotus

BlackLotus UEFI Windows Bootkit

Repository: https://github.com/ldpreload/BlackLotus
Canonical: https://ross.abutalabs.com/products/blacklotus
Language: C
License Family: other
Last push: 2024-03-28T18:35:16+00:00

## Health v2 (maintenance only)
Score: 29/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 82
- inputs: {"age_days": 1148, "days_push": 888, "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 2240, forks 478 (observed 2026-08-28T04:06:29.723335+00:00)

## What it is
An open-source UEFI bootkit targeting Windows that implements a Secure Boot bypass, kernel-level persistence, and an HTTP-based C2 loader with a web management panel. It is a proof-of-concept/research implementation of the BlackLotus bootkit, written in C and x86 assembly with no third-party libraries.

## Use cases
- study how UEFI bootkits achieve Secure Boot bypass
- research bootkit persistence techniques on Windows
- analyze malware C2 communication patterns
- build defensive detections against UEFI bootkits
- learn UEFI driver development with EDK2
- evaluate EDR bypass and anti-hooking techniques

## When to choose
- you are a security researcher studying bootkit internals
- you need a reference implementation for building bootkit detections
- you want to understand Secure Boot and BitLocker bypass mechanics

## When to avoid
- you need a legitimate bootloader or system utility
- you lack secure malware analysis infrastructure
- you want production-ready or supported software
- you cannot legally possess offensive tooling in your jurisdiction

## Facets
- artifact type: library
- maturity: maintenance
- function: security, reverse-engineering, penetration-testing
- domain: security, reverse-engineering, operating-systems
- platform: windows, cpp, c
- tags: uefi-bootkit, malware, secure-boot-bypass, rootkit, research, c2, firmware

## Member repositories
- ldpreload/BlackLotus (main) score 29

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:29.723335+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 2026-08-30T02:44:08.023809+00:00, confidence not recorded.
  - readme: https://github.com/ldpreload/BlackLotus (fetched 2026-08-28T04:06:29.723335+00:00, sha 885858cfc72f)
- Data as of 2026-08-30T08:39:29.467469+00:00.