hunting-bootkits-in-efi-system-partition SKILL.md skillA
hunting-bootkits-in-efi-system-partition from adriannoes/awesome-agentic-ai is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add adriannoes/awesome-agentic-ai/hunting-bootkits-in-efi-system-partition@v1.0Pins v1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- adriannoes/awesome-agentic-ai
- Path
cursor-claude-codex/skills/anthropic-cybersecurity-skills/skills/hunting-bootkits-in-efi-system-partition/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0, committed Jun 25, 2026
- Size
- 12,546 bytes
- Repository stars
- 69
- License
- MIT
Baseline the EFI System Partition and hunt malicious EFI binaries (ESPecter, BlackLotus, Bootkitty, Glupteba) by mounting the ESP, hashing and verifying boot loaders, scanning with YARA, and detecting anomalous non-EFI files.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Hunting Bootkits in the EFI System Partition
## Overview
The EFI System Partition (ESP) is a small FAT32-formatted partition that the platform firmware reads at power-on to locate and execute the operating system's boot loader. Because it executes *before* the operating system, kernel, and any EDR agent, the ESP is one of the most coveted persistence locations for advanced adversaries. UEFI bootkits that live on the ESP survive OS reinstallation, disk reformatting of the OS partition, and most endpoint defenses.
This skill follows the detection research published by **Eclypsium** ("Enhanced Threat Detection: Bootloaders, Bootkits, and Secure Boot", and the *Bootkitty* and *Glupteba* analyses) and aligns with the ESP-hunting methodology Rapid7 documented for Velociraptor (`Windows.Forensics.UEFI`, `Windows.Detection.Yara.UEFI`). The threat context is concrete and current:
- **ESPecter** (ESET, 2021) — a UEFI bootkit that persists on the ESP as a patched Windows Boot Manager (`bootmgfw.efi`) plus malicious kernel-mode drivers. It marked the move of UEFI threats *from SPI flash to the ESP*, where they are far easier to deploy.
…Read the whole file at its exact version.
How to install
mdr add adriannoes/awesome-agentic-ai/hunting-bootkits-in-efi-system-partition@sha256:a0f9b4e380da3a73The line at the top of this page pins the label v1.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_r5lx33dmns2qgdf4)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jun 25, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (12546 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
adriannoes/awesome-agentic-ai · 69 stars · license MIT · pushed 2026-10-10 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_r5lx33dmns2qgdf4 GET https://markdownregistry.com/api/v1/resolve?ref=adriannoes/awesome-agentic-ai/hunting-bootkits-in-efi-system-partition GET https://markdownregistry.com/api/v1/blob/a0f9b4e380da3a735d8d3b2313c237fbcf25898702389e019a7c455225fad210
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.