ransomware-chain SKILL.md skillA
ransomware-chain from cisco-ai-defense/skill-scanner is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add cisco-ai-defense/skill-scanner/ransomware-chain@git:20260903.e815686Pins git:20260903.e815686 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- cisco-ai-defense/skill-scanner
- Path
evals/skills/malware/ransomware-chain/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260903.e815686, committed Sep 3, 2026
- Size
- 273 bytes
- Repository stars
- 2,689
- License
- a license file GitHub does not identify
Demonstrate a multi-stage file encryption and extortion implementation.
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
# Ransomware Implementation Chain The inert source in [payload.py](payload.py) is scanned statically and is never imported or executed.
Read the whole file at its exact version.
How to install
mdr add cisco-ai-defense/skill-scanner/ransomware-chain@sha256:800f4516ebdd197eThe line at the top of this page pins the label git:20260903.e815686, 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_hvtctwpmraqosgyp)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 3, 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 (273 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
cisco-ai-defense/skill-scanner · 2,689 stars · license a license file GitHub does not identify · pushed 2026-10-26 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_hvtctwpmraqosgyp GET https://markdownregistry.com/api/v1/resolve?ref=cisco-ai-defense/skill-scanner/ransomware-chain GET https://markdownregistry.com/api/v1/blob/800f4516ebdd197eb777dbfba3b10e3890d05c809d82855ec6f576d58f3f07de
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.