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detecting-command-and-control-over-dns

82 / 100 · Low risk

Fine to try.

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

Detects command-and-control (C2) communications tunneled through DNS protocol including DNS tunneling tools (Iodine, dnscat2, dns2tcp, Cobalt Strike DNS beacon), domain generation algorithms (DGA), encoded payload delivery via TXT/CNAME records, and DNS beaconing patterns. Covers Shannon entropy analysis of query subdomains, statistical anomaly detection, ML-based DGA classification, passive DNS correlation, and Zeek/Suricata signature development. Activates for requests involving DNS-based C2 …

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

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

if [ -e ~/.agents/skills/'detecting-command-and-control-over-dns' ] || [ -L ~/.agents/skills/'detecting-command-and-control-over-dns' ]; then echo 'A skill folder named detecting-command-and-control-over-dns 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 "$d" checkout --quiet '293ce9f76e3abcd5ba18db284688bc0d9ac6691d' -- 'plugins/asi/skills/detecting-command-and-control-over-dns' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugins/asi/skills/detecting-command-and-control-over-dns' ~/.agents/skills/'detecting-command-and-control-over-dns' && 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/'detecting-command-and-control-over-dns' ~/.claude/skills/'detecting-command-and-control-over-dns' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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