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endpoint-security-osquery | Level: Easy  | Total Lab Runs: 0 | Premium Lab | 


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Lab Walkthrough Video:


You will be provided with osquery shell on the machine. You have to run appropriate queries and answer the following questions:

  1. How many non-system and non-root users are present on the system?
  2. Which user is not using the bash shell?
  3. Where is the history file for user "John" located? Provide the absolute path of the directory (also add the last /).
  4. A sensitive file was edited by the root user. What is the name of that file? Provide the full path.
  5. Which user has installed a possible backdoor?
  6. Where is this backdoor kept on the local machine? Provide only the name of the directory.
  7. A suspicious program is installed on the system by a sudoer user. Where was this program hosted online? Provide the full URL.
  8. A specific user logs into this machine every day at the same time. Which user is that? provide username. 
  9. On what time the user logs into the system? Provide time in HH:MM:SS GMT format.
  10. One of the users tried to guess the password for another user. What is the name of that user?
  11. One of the users also has another machine on another private network. What is the IP of that machine?
  12. Retrieve the hidden flag.   

Guidelines:
  • Please don't use Ctrl+C as that will shut down the osquery shell. If you use it by mistake, it is recommended to restart the lab.
  • osquery documentation is available here: https://osquery.io/schema/3.3.2


Verify:
1. How many non-system and non-root users are present on the system?
 
2. Which user is not using the bash shell?
 
3. Where is the history file for user 'John' located? Provide the absolute path of the directory (also add the last /).
 
4. A sensitive file was edited by the root user. What is the name of that file? Provide the full path.
 
5. Which user has installed a possible backdoor?
 
6. Where is this backdoor kept on the local machine? Provide only the name of the directory.
 
7. A suspicious program is installed on the system by a sudoer user. Where was this program hosted online? Provide the full URL.
 
8. A specific user logs into this machine every day at the same time. Which user is that? provide username.
 
9. On what time the user logs into the system? Provide time in HH:MM:SS GMT format.
 
10. One of the users tried to guess the password for another user. What is the name of that user?
 
11. One of the users also has another machine on another private network. What is the IP of that machine?
 
12. Retrieve the hidden flag.
 

The following activities are strictly prohibited on this website unless otherwise explicitly stated as allowed in the mission statement:

  • Using automated scanners
  • Using brute force attacks
  • Denial of Service attacks
  • Attacking other student machines in challenges where you might achieve a shell on the vulnerable system
  • Attacking the lab infrastructure

Users violating the above will be either temporarily or permanently banned from the website. 

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Technical Support for this Lab:

There is a reason we provide unlimited lab time: you can take as much time as you need to solve a lab. However, we realize that sometimes hints might be necessary to keep you motivated!

We currently provide technical support limited to:

  • Giving hints for a lab exercise
  • In rare circumstances, if you have totally given up (NO!!!) then tell you how to solve it. This will be limited to sharing the solution video or lab report
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