analyzing-disk-image-with-autopsy

Analyzing Disk Image With Autopsy

Overview

Cybersecurity skill for analyzing disk image with autopsy. Follows industry best practices and security standards.

When to Use

Trigger phrases:

• "analyzing disk image with autopsy"

• "Perform comprehensive forensic analysis of disk images using Autopsy to recover "

• When you have a forensic disk image and need structured analysis of its contents

• During investigations requiring file recovery, keyword searching, and timeline analysis

• When non-technical stakeholders need visual reports from forensic evidence

• For examining file system metadata, deleted files, and embedded artifacts

• When building a comprehensive case from multiple disk images

When NOT to Use

• When you lack proper authorization for testing
• For production systems without change management
• When the task requires legal or compliance expertise beyond technical scope

Prerequisites

• Autopsy 4.x installed (Windows) or Autopsy 4.x with The Sleuth Kit (Linux)
• Forensic disk image in raw (dd), E01 (EnCase), or AFF format
• Minimum 8GB RAM (16GB recommended for large images)
• Java Runtime Environment (JRE) 8+ for Autopsy
• Sufficient disk space for the Autopsy case database (2-3x image size)
• Hash databases (NSRL, known-bad hashes) for file identification

Workflow

# Example: IOC detection
import re

IOC_PATTERNS = {
    "ip": r"\b(?:\d{1,3}\.){3}\d{1,3}\b",
    "domain": r"\b[a-z0-9-]+\.[a-z]{2,}\b",
    "hash_md5": r"\b[a-f0-9]{32}\b",
    "hash_sha256": r"\b[a-f0-9]{64}\b",
}

def extract_iocs(text: str) -> dict:
    return {k: re.findall(v, text) for k, v in IOC_PATTERNS.items()}

1. Scope the Analysis — Define what disk image artifacts or data sources to examine and the investigation timeline.
2. Preserve Evidence — Create forensic copies of relevant data. Maintain chain of custody documentation.
3. Extract Key Indicators — Use autopsy to parse and extract relevant disk image data points from collected artifacts.
4. Correlate Findings — Cross-reference extracted data with other sources (threat intel, logs, timelines).
5. Build Timeline — Construct a chronological sequence of events related to disk image.
6. Document Analysis — Write findings report with evidence, conclusions, and recommendations.