Digital Forensic Tools Crash Course (Autopsy)

Digital Forensics Crash Course: A Step‑by‑Step Guide to Using Autopsy Forensic Browser

Author: Sulemana Salifu Course: IT532 – Computer Forensics Institution: Southern States University Week 3 Assignment

Introduction

In the digital age, nearly every investigation involves some form of digital evidence—from smartphones and hard drives to social media and cloud systems. A digital forensic investigator must use reliable, verifiable tools to extract, analyze, and document this evidence without compromising its integrity.

Autopsy is a free, open‑source, GUI‑based digital forensics platform built on The Sleuth Kit (TSK). It enables investigators to recover deleted files, analyze Internet artifacts, examine images, and create structured reports suitable for legal or administrative proceedings. This page is a beginner‑friendly “crash course” that walks you through installing, configuring, and using Autopsy effectively.

Table of Contents

System Requirements Quick Start Guide Sample Files & Resources Real‑World Application Conclusion References

System Requirements

• OS: Windows 10+ (64‑bit), Linux, or macOS
• RAM: 4 GB minimum (8 GB recommended)
• CPU: Dual‑core or better
• Storage: ~2 GB free (more for evidence images)
• Java: JRE 11 or newer

Download: Autopsy Official Download Page

User Guide: Autopsy Documentation

Quick Start Guide: Using Autopsy

Step 1 — Install Autopsy

1. Go to autopsy.com/download and download the latest installer for your OS.
2. Run the installer and ensure The Sleuth Kit components are included.
3. Launch Autopsy from your applications menu.

Step 2 — Create a New Case

1. Click Create New Case.
2. Enter a Case Name (e.g., Week3_Lab_Investigation) and choose a case directory.
3. Fill in Examiner details and notes (helps later when generating reports).

Step 3 — Add a Data Source

1. Select Add Data Source → Disk Image or VM File.
2. Browse to your evidence image (e.g., .E01, .dd, .img).
3. Click Next to ingest the image.

Practice image: Try a public corpus image from Digital Corpora.

Step 4 — Analyze Key Artifacts

• File System View: Navigate user folders, documents, downloads.
• Web Artifacts: History, cookies, downloads (Chrome/Firefox/Edge).
• Recent Activity: Recently opened files, MRUs, program execution.
• Email: Examine PST/MBOX where present.
• USB Activity: Identify removable devices historically connected.
• Keyword Search: Search terms like password, fraud, invoice.

Step 5 — Tag & Bookmark Findings

Right‑click files/artifacts → Add Tag to categorize evidence (e.g., Suspicious Email, PII, Malware). Tags make reporting faster and maintain a clear audit trail.

Step 6 — Generate a Report

1. Go to Tools → Generate Report.
2. Select format (HTML, PDF, CSV) and the modules/artifacts to include.
3. Export and review for completeness and clarity.

Good Practice: Documentation & Chain of Custody

• Record who collected the evidence, when, where, and how.
• Use write‑blocking for acquisitions and keep hashes (MD5/SHA‑1/SHA‑256).
• Work on verified copies; preserve originals.
• Log every action; be ready for peer review and court scrutiny.

Sample Files & Helpful Resources

• Digital Corpora – Public Disk Images
• Autopsy GitHub Repository
• The Sleuth Kit (TSK)
• DFIR Training – Autopsy

Real‑World Application

Autopsy is used across law enforcement, corporate investigations, and academia for tasks such as recovering deleted files, tracing Internet activity, detecting data exfiltration, and producing admissible reports. Its open‑source model enables transparency, peer review, and extensibility through modules—qualities that align well with best practices in forensic methodology.

Conclusion

A capable investigator pairs strong analytical methods with trustworthy tools. Autopsy offers a robust, free platform for imaging, artifact analysis, and reporting—core skills emphasized this week (Online Investigations & Documenting the Investigation). Mastering Autopsy will help you conduct sound, defensible examinations from acquisition to final report.

References

• Hayes, D. R. (2015). A Practical Guide to Computer Forensics Investigations. Prentice Hall.
• Malla Reddy College of Engineering & Technology. (2019). Digital Notes on Computer Forensics.
• Nelson, B., Phillips, A., & Steuart, C. (2019). Guide to Computer Forensics and Investigations. Cengage Learning.
• Oettinger, W. (2022). Learn Computer Forensics (2nd ed.). Packt Publishing.

© Week 3 – IT532 Computer Forensics | Prepared by Sulemana Salifu