network-forensics

Analyze PCAP/PCAPNG captures to detect C2 beacons and DNS tunneling.

3|Updated Apr 10, 2026
One-click install
npx skills add https://github.com/Fuzzdkk/dfir-skills --skill network-forensics-fuzzdkk
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: network-forensics
Source: https://github.com/Fuzzdkk/dfir-skills/tree/main/network-forensics
Command: npx skills add https://github.com/Fuzzdkk/dfir-skills --skill network-forensics-fuzzdkk

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Analyzes PCAP/PCAPNG network captures to identify C2 beacons, data exfiltration, DNS tunneling, and suspicious traffic patterns, enabling rapid incident assessment.

Core Features & Use Cases

  • In-Depth Traffic Analysis: Detect C2, beaconing, tunneling, and anomalous flows across protocols (DNS, HTTP, TLS).
  • ** IOC Extraction & Reports**: Generate a concise list of indicators and a structured findings report for investigations.
  • Use Case: For a compromised host, analyze a PCAP to map attacker actions, reachability, and data exfiltration paths.

Quick Start

Provide a PCAP file to initiate traffic analysis and generate IOCs and a findings report.

Frequently Asked Questions about network-forensics

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I analyze a PCAP file to detect C2 beacons and data exfiltration?

You can analyze PCAP network captures to identify C2 beacons, data exfiltration, and suspicious traffic patterns to enable rapid incident assessment. The process scans protocols like DNS, HTTP, and TLS to map anomalous flows and attacker reachability.

What is DNS tunneling and how can network forensics identify it?

DNS tunneling is a technique that hides malicious data within DNS queries to bypass network filters. Network forensics identifies this by analyzing PCAP captures to detect anomalous DNS traffic patterns and extract actionable indicators of compromise.

Can I extract IOCs from a PCAP for incident response reporting?

Yes, you can extract IOCs from a PCAP during network forensics investigations. The analysis generates a concise list of indicators and a structured findings report to map attacker actions and document evidence for incident tickets.

Does this network forensics workflow rely on tshark for traffic analysis?

Yes, the network forensics workflow supports deterministic tshark-based analysis across multiple phases including overview, DNS, HTTP, and beaconing to accurately identify suspicious traffic patterns in PCAP files.

What is the best way to investigate a compromised host using network captures?

Analyzing a PCAP from the compromised host is the best way to map attacker actions, reachability, and data exfiltration paths. This network forensics process assesses protocols like DNS, HTTP, and TLS to generate structured findings for investigations.

When do I need to analyze PCAPNG files for incident response?

You need to analyze PCAPNG files during incident response when you must rapidly assess network compromises, detect C2 beaconing, or identify data exfiltration paths to extract IOCs and generate evidence-backed findings reports.