Hasher Hands on Labs

Choose a lab

Choose the Interactive Lab for a short, guided browser exercise. Try the Full Lab after reviewing the tool guide and preparing an isolated, authorised environment.

How to use these labs

Start with the browser based route to practise the workflow and evidence decisions without touching a real system. Use the Full Lab only in an isolated, authorised environment, and compare its outcome with the corresponding tool guide.

Interactive Lab

Browser based

Hasher Interactive Lab

Expand labOpen in new tab

✓ No installation

Practise a guided Hasher workflow in a safe browser simulation with immediate feedback.

H

Case SUSA-014: suspicious activityCalculate and compare hashes for original, working, and derived training files.

Task 1 of 4

Safe simulationThese illustrative records practise decisions relevant to Hasher. The layout and output are not a replica of the product. No tool runs and no evidence is changed.

1. 1Source
2. 2Configure
3. 3Review
4. 4Explain

Hasher · Analyst utility workspaceSUSA training case / read only simulation

Task 01 · Select evidence

Choose the authorised, traceable source

Select the source that matches the case and has a recorded origin.

Clearly labelled working copy · SHA-256 recordedOriginal evidence selected for editingUnlabelled file from a shared folder

Select a source to continue.

Full Lab

Self hosted

Hasher Full Lab

Evidence required

Hands on DFIR proof of concept

Prepare it. Examine it. Explain it.

Use Hasher to calculate and compare hashes for original, working, and derived training files, retain the evidence trail and write a bounded finding another analyst can review.

Start the Full Lab

Safety boundary

Keep original, working, and derived material separate. Treat links, archives, and files as untrusted when appropriate.

Evidence

clearly labelled working copies and a separate controlled output directory

Success evidence

a reproducible supporting result with input, transformation, output, and integrity context

Recommended first

Beginner Core Lab

Complete one bounded Hasher workflow using the documented source, settings and expected result.

Optional extension

Add a comparison

After the core succeeds, repeat the same focused task with one controlled change and explain the difference without widening the authorised scope.

Full Lab scenario

You are the first analyst reviewing a bounded training case. Your task is to calculate and compare hashes for original, working, and derived training files. The result must be understandable to a second analyst who did not watch you perform the work.

01

Activity 1: Prepare the environment

1. Record the case question, authority and the identity of the isolated training system or evidence source.
2. Record the Hasher version, provenance, system time and time zone.
3. Identify the original material, working location and separate output destination. Confirm that there is enough free space.
4. Take or verify a recoverable baseline before changing the training system.

Milestone 1Collection boundary readyThe authorised source, tool, time context, working location, destination and recovery point are recorded.

02

Activity 2: Complete the focused task

1. Restate the investigation question and select only the settings or commands required to calculate and compare hashes for original, working, and derived training files.
2. Follow the Hasher guide and record any necessary difference in paths, labels or behaviour between versions.
3. Record start and finish times, relevant settings, completion status, warnings and errors.
4. Preserve the returned output and keep it attributable to its source and collection context.

Milestone 2Focused result preservedKeep the output with the source details, command or settings, and any errors.

03

Activity 3: Review and report

1. Work from an identified copy and confirm a reproducible supporting result with input, transformation, output, and integrity context.
2. Separate direct tool observations from analyst interpretation. Record missing fields, unavailable material and alternative explanations.
3. Preserve relevant integrity information, settings or commands and the evidence needed for another analyst to reproduce the result.
4. Write a bounded conclusion with observation, interpretation, confidence and limitations, then clean up the disposable environment.

Milestone 3Finding ready for reviewAnother analyst can reproduce the workflow, locate the supporting output and understand what the result does and does not establish.

Full Lab evidence checklist

This checklist applies to the self hosted Full Lab. If you completed the Interactive Lab, retain its browser evidence summary instead.

• Core completion

  Required to demonstrate a safe, attributable workflow.

  • Case question, authority, source identity, isolated environment and time context.
  • Hasher version, provenance and relevant configuration.
  • Recorded source, working location and separate output destination.
  • Focused settings or commands used to calculate and compare hashes for original, working, and derived training files.
  • Expected output, completion status and retained errors or warnings.
  • Observation, interpretation, confidence, limitations and alternative explanations.

• Good analyst practice

  Supplementary records that improve reproducibility and review quality.

  • Integrity information for retained output and an identified working copy.
  • Cleanup completed and disposable systems restored to their recorded baseline.

0 of 8 recorded Mark each item when you have saved the evidence.Reset

Clean up

Protect retained output and case notes, remove harmless training material, clear temporary credentials or access and restore disposable systems to their recorded baseline. Confirm that no test collection remains active.