Step 1: Create an Image in FTK Image
One of the first steps in conducting digital forensic investigations involves creating a forensic image of the digital evidence disk or drive. Digital forensics evidence can be found in operating systems, disk drives, network traffic, emails, and in software applications. To help the detectives in your department to better understand the digital forensics investigation process, you have offered to show them how you create an image using FTK Imager. Media investigations of digital storage devices can include audio files, pictures, videos, words, portions of files, graphic files, and information about a file. Graphics files can be a rich source of forensic evidence.
Because you are pressed for time, you go to the virtual lab and decide to create an image of the “My Pictures” directory on your computer. This process is similar to making a full computer image, but it takes only a few minutes rather than several hours. You are preparing a report describing the steps that you follow so the detectives can refer to it later. You will include a screenshot and text file (DFC620_Lab1_Name.ad1) that document your imaging process with information such as hash values.
Submit your report for review and ungraded feedback from the detectives (your instructor). Incorporate any suggested changes; you will include your report in the Use of Access Data Tools paper that you submit in Step 4.
Now that you have demonstrated the imaging process and investigative techniques to detectives, you are ready to proceed to the next step in which you demonstrate the use of Registry Viewer.
Step 2: Process an Image From the Suspect Mantooth’s Compute
In the previous step, you imaged a directory for a forensic report using FTK Imager. Now the detectives have requested additional analysis, so you decide to go to the virtual lab and use Registry Viewer to access user account information for the image from a computer owned by a suspect named Mantooth. Detectives don’t yet have the suspect’s first name and are seeking more information.
Key words: examining metadata, file systems, hexadecimal, ASCII, operating systems, report writing, file system information gathering.
The image you will be viewing, Mantooth, is a subset of a full computer image. While it is rich in artifacts, it is small enough to process in minutes rather than hours. Registry Viewer provides the ability to view the contents of various types of registry files so it will help to answer some of the questions posed by detectives. You can also investigate the suspect Mantooth's email activity and picture files.
The detectives have requested specific information that you will detail in the lab, including Mantooth's first name, email information, and other material that can be gleaned from the computer hard drive. See the lab instructions for specific questions to answer.
The detectives have requested the following information:
1. Mantooth's first name and a screenshot of a picture
2. number of jpg files in the Mantooth evidence file
3. names of the email domains from the email in this image, plus the number of sent and received messages and the dates of the oldest and newest sent and received email message for each domain
4. names of people who have sent email to or received email from Mantooth, and the number of emails sent or received to and from each person
5. information on encryption—whether it was used for any of the email, and if so, what type
6. evidence of potential criminal activity within this image
7. information on how PINs were captured
8. vehicle identification number of the '92 Dodge
9. identity of Sean and his role in this case
10. information on password(s)—where you found it/them, whether it/they are usable, what it/they are used fo
The detectives are also asking for:
1. summary of findings
2. case documentation, such as tools used, version, and image hashes
3. screenshots or other forensic artifacts supporting your responses to the questions
Review your responses and summary information carefully for accuracy and completeness, and save them in a single file to be included in your final paper on Using Access Data tools.
Just when you think that the detectives are satisfied with the information that you’ve provided, they request even more information on the suspects and the crime. You can’t say no, so you turn to PRTK to help you access that data.
Step 3: Process an Image From the Suspect Washer’s Compute
The Mantooth image has provided a lot of new information, but the detectives want more. PRTK is the tool that can uncover it. An image has been taken of the hard drive in a computer belonging to a suspect named Washer.
Key words: examining metadata, file systems, hexadecimal, ASCII, operating systems, report writing, file system information gathering.
The Washer image is a subset of a full computer image (like the Mantooth image), so processing time is reduced. While it is rich in artifacts, it is small enough to process in minutes rather than hours. You have full confidence that an investigation of the Washer image will approximate the investigation of a full computer image. Registry Viewer allows you to view the contents of registry files, but PRTK can decrypt files as well. Passwords for certain files may be recoverable from other artifacts on the image as well.
The detectives have asked you to analyze the Washer and thumb drive images within FTK to fe
et out facts, including a list of detailed questions on Washer, including associates and other information from the computer and its files. You will include your answers to these questions in your final paper on the Use of Access Data tools.
1. What are the AIM usernames for Rasco Badguy and John Washer?
2. What is the cu
ent zip code for the AOL IM account registered to Washer?
3. When was AOL IM installed?
Rasco Badguy and John Washer plan to camp.
1. What does Rasco's vehicle look like? Provide a description. Who might Rasco
ing with him?
2. Provide the starting and ending points for their camping trip, as well as the name of the body of water nea
y (same as the road running along the shore). Find a map and directions to the spot where they will camp.
Provide this additional information:
1. Document three distinct types of criminal activity that are under consideration and discussion by these people.
2. There is a piece of software that will support one of the types of criminal activity under consideration. It is being obscured by file manipulation or encryption. Document the name of the file, its function, and what needs to be installed for it to operate properly.
3. Document two names, addresses, and credit card or account numbers of potential victims.
4. Prove that the file “How to Steal Credit Card Numbers.doc” was opened on the computer.
5. The word “oops” has come up in intercepted traffic. Document what it refers to.
6. Document three ways this case has familiarity or linkages to any other case you are familiar with.
7. Several people in this case owe money. Document who they are and how much they owe.
8. Is there anything that links the thumb drive to the Washer image?
9. Document how many times the administrator account was used and the date of the last log-in (hint: during 2008).
Once again, the detectives are asking for a summary of your investigative procedures and findings, so you document the following:
1. summary of findings
2. case documentation such as tools used, version, and image hashes;
3. screenshots or other forensic artifacts that support your responses to all questions
Review your responses and summary documentation carefully for accuracy and completeness since you will be including them in your final paper.
Step 4: Submit Final Paper: Use of Access Data Tools
The time has come to combine work products from the earlier steps into a final paper summarizing the Use of Access Data Tools. You submit it to the detectives (your instructor) and cross your fingers that it contains everything they need to know about the most widely used tools available for accessing and imaging forensic data.
Forensic Imaging La
Mantooth Image Processing and Analysis La
Washer Image Processing and Analysis La