Detect Cobalt Strike beacon command-and-control traffic using default TLS certificate signatures (serial 8BB00EE), JA3/JA3S/JARM fingerprints, HTTP malleable C2 profile pattern matching, and beacon jitter/interval analysis, built with Zeek network logs, Suricata IDS rules, and Python PCAP analysis.
Install
npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill hunting-for-cobalt-strike-beaconsnpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill hunting-for-cobalt-strike-beacons -a claude-code -gnpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill hunting-for-cobalt-strike-beacons -a codex -ggemini skills install https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git --path skills/hunting-for-cobalt-strike-beaconsgh skill install mukul975/Anthropic-Cybersecurity-Skills hunting-for-cobalt-strike-beaconsgit clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills /tmp/mukul975__Anthropic-Cybersecurity-Skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/mukul975__Anthropic-Cybersecurity-Skills/skills/hunting-for-cobalt-strike-beacons ~/.claude/skills/hunting-for-cobalt-strike-beacons # Claude Code
cp -R /tmp/mukul975__Anthropic-Cybersecurity-Skills/skills/hunting-for-cobalt-strike-beacons ~/.agents/skills/hunting-for-cobalt-strike-beacons # Codex, Cursor, Gemini CLI, Copilot, OpenCode