Anthropic-Cybersecurity-Skills/skills/implementing-network-traffic-analysis-with-arkime/SKILL.md

name, description, domain, subdomain, tags, version, author, license

name	description	domain	subdomain	tags	version	author	license
implementing-network-traffic-analysis-with-arkime	Deploy and query Arkime (formerly Moloch) for full packet capture network traffic analysis. Uses the Arkime API v3 to search sessions, download PCAPs, analyze connection patterns, detect beaconing behavior, and identify suspicious network flows. Monitors DNS queries, HTTP traffic, and TLS certificate anomalies across captured traffic.	cybersecurity	network-security	implementing network traffic analysis	1.0	mahipal	MIT

Instructions

1. Install dependencies: pip install requests
2. Configure Arkime viewer URL and credentials.
3. Run the agent to query Arkime sessions and analyze traffic:
   • Search sessions by IP, port, protocol, or expression
   • Download PCAP data for forensic analysis
   • Detect C2 beaconing via connection interval analysis
   • Identify DNS tunneling through query length statistics
   • Flag connections to known-bad TLS certificate issuers

python scripts/agent.py --arkime-url https://arkime.local:8005 --user admin --password secret --output arkime_report.json

Examples

Beaconing Detection

Source: 10.1.2.50 -> 185.220.101.34:443
Sessions: 288 over 24 hours
Avg interval: 300s, Jitter: 4.2%
Verdict: HIGH confidence C2 beaconing (jitter < 5%)