← All skills

hunting-for-cobalt-strike-beacons

100 / 100 · Low risk

Fine to try.

By plurigrid/asi (GitHub) · coding · 72 stars · scanned at commit 293ce9f

Detect Cobalt Strike beacon network activity using default TLS certificate signatures (serial 8BB00EE), JA3/JA3S/JARM fingerprints, HTTP C2 profile pattern matching, beacon jitter analysis, and named pipe detection via Zeek, Suricata, and Python PCAP analysis.

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'hunting-for-cobalt-strike-beacons' ] || [ -L ~/.agents/skills/'hunting-for-cobalt-strike-beacons' ]; then echo 'A skill folder named hunting-for-cobalt-strike-beacons already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/plurigrid/asi' "$d" && git -C "$d" checkout --quiet '293ce9f76e3abcd5ba18db284688bc0d9ac6691d' -- 'plugins/asi/skills/hunting-for-cobalt-strike-beacons' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugins/asi/skills/hunting-for-cobalt-strike-beacons' ~/.agents/skills/'hunting-for-cobalt-strike-beacons' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'hunting-for-cobalt-strike-beacons' ~/.claude/skills/'hunting-for-cobalt-strike-beacons' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

Badge for your README

The badge for plurigrid/asi shows the score of its lowest-scoring skill.

[![SkillTrust](https://zalavijaysinh.github.io/skilltrust/badges/plurigrid/asi.svg)](https://zalavijaysinh.github.io/skilltrust/repos/plurigrid/asi/)

Score history