Insider

Info

• Category : Digital Forensics
• SHA1SUM : d820264d825fdaeb2146bf7b4c4e03684e700007
• Published : May 25, 2021
• Author : Champlain College
• Size : 83 MB
• Tags : Disk Linux FTK Kali

Uncompress the challenge (pass: cyberdefenders.org)

Scenario

After Karen started working for ‘TAAUSAI,’ she began to do some illegal activities inside the company. ‘TAAUSAI’ hired you as a soc analyst to kick off an investigation on this case.

You acquired a disk image and found that Karen uses Linux OS on her machine. Analyze the disk image of Karen’s computer and Réponse the provided questions.

Tools

• FTK Imager

Questions

Q1 - What distribution of Linux is being used on this machine?

Réponse : kali

Q2 - What is the MD5 hash of the apache access.log?

var > log > apache2. Faites un clic droit et exportez la liste de hachage pour le acces.log

Réponse : d41d8cd98f00b204e9800998ecf8427e

Q3 - It is believed that a credential dumping tool was downloaded? What is the file name of the download?

Path : root > Downloads

Réponse : mimikatz_trunk.zip

Q4 - There was a super-secret file created. What is the absolute path?

In the bash_history we find :

1
2

touch snky snky > /root/Desktop/SuperSecretFile.txt
cat snky snky > /root/Desktop/SuperSecretFile.txt 

Réponse : /root/Desktop/SuperSecretFile.txt

Q5 - What program used didyouthinkwedmakeiteasy.jpg during execution?

Still in bash_history

1

binwalk didyouthinkwedmakeiteasy.jpg 

Réponse : binwalk

Q6 - What is the third goal from the checklist Karen created?

Path : /root/Desktop/Checklist

1
2
3
4
5

Check List:

- Gain Bob's Trust
- Learn how to hack
- Profit

Réponse : Profit

Q7 - How many times was apache run?

Path : var > log > apache2. Apache logs are empty

Réponse : 0

Q8 - It is believed this machine was used to attack another. What file proves this?

Path : /root/irZLAohL.jpeg

Réponse : irZLAohL.jpeg

Q9 - Within the Documents file path, it is believed that Karen was taunting a fellow computer expert through a bash script. Who was Karen taunting?

Path : /root/Documents/myfirsthack/firstscript_fixed

Réponse : Young

Q10 - A user su’d to root at 11:26 multiple times. Who was it?

We can find that information in auth log :

1

/var/log/auth.log | grep 11:26

Réponse : postgres

Q11 - Based on the bash history, what is the current working directory?

The last cd instruction In the bash_history was :

1

cd ../Documents/myfirsthack/

Réponse : /root/Documents/myfirsthack/