TryHackMe | Masterminds Walkthrough

 

Practice analyzing malicious traffic using Brim.

Link-https://tryhackme.com/room/mastermindsxlq


[Infection 1]

Provide the victim’s IP address.

Load infection1.pcap in Brim

Check the source IP of “Http Requests”

192.168.75.249


The victim attempted to make HTTP connections to two suspicious domains with the status ‘404 Not Found’. Provide the hosts/domains requested.

cambiasuhistoria.growlab.es, www.letscompareonline.com


The victim made a successful HTTP connection to one of the domains and received the response_body_len of 1,309 (uncompressed content size of the data transferred from the server). Provide the domain and the destination IP address.

Check the “Http Requests”

ww25.gocphongthe.com,199.59.242.153


How many unique DNS requests were made to cab[.]myfkn[.]com domain (including the capitalized domain)?

Check “Unique DNS Queries”

7


Provide the URI of the domain bhaktivrind[.]com that the victim reached out over HTTP.

Check the “Http Requests”

/cgi-bin/JBbb8/


Provide the IP address of the malicious server and the executable that the victim downloaded from the server.

185.239.243.112,catzx.exe


Based on the information gathered from the second question, provide the name of the malware using VirusTotal.

Emotet


[Infection 2]


Provide the IP address of the victim machine.

Load infection2.pcap in Brim

Check the source IP of “Http Requests”

192.168.75.146


Provide the IP address the victim made the POST connections to.

5.181.156.252


How many POST connections were made to the IP address in the previous question?

3


Provide the domain where the binary was downloaded from.

hypercustom.top


Provide the name of the binary including the full URI.

/jollion/apines.exe


Provide the IP address of the domain that hosts the binary.

45.95.203.28


There were 2 Suricata “A Network Trojan was detected” alerts. What were the source and destination IP addresses?

192.168.75.146,45.95.203.28


Taking a look at .top domain in HTTP requests, provide the name of the stealer (Trojan that gathers information from a system) involved in this packet capture using URLhaus Database.

Redline Stealer


[Infection 3]


Provide the IP address of the victim machine.

Load infection3.pcap in Brim

Check the source IP of “Http Requests”

192.168.75.232


Provide three C2 domains from which the binaries were downloaded (starting from the earliest to the latest in the timestamp)

efhoahegue.ru,afhoahegue.ru,xfhoahegue.ru


Provide the IP addresses for all three domains in the previous question.

162.217.98.146,199.21.76.77,63.251.106.25


How many unique DNS queries were made to the domain associated from the first IP address from the previous answer?

2


How many binaries were downloaded from the above domain in total?

5


Provided the user-agent listed to download the binaries.

Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:25.0) Gecko/20100101 Firefox/25.0


Provide the amount of DNS connections made in total for this packet capture.

986


With some OSINT skills, provide the name of the worm using the first domain you have managed to collect from Question 2. (Please use quotation marks for Google searches, don’t use .ru in your search, and DO NOT interact with the domain directly).

Phorphiex


That’s it! See you in the next Room :)

Comments

Post a Comment

Eonrec

Ads by Eonads

Popular posts from this blog

TryHackMe | Introduction To Honeypots Walkthrough

Image
  A guided room covering the deployment of honeypots and analysis of botnet activities Link - https://tryhackme.com/room/introductiontohoneypots Create a file and then log back in is the file still there? (Yay/Nay) Nay How many passwords include the word “password” or some other variation of it e.g “p@ssw0rd” 15 What is arguably the most common tool for brute-forcing SSH? hydra What intrusion prevention software framework is commonly used to mitigate SSH brute-force attacks? Fail2Ban What CPU does the honeypot “use”? Run command cat /proc/cpuinfo Intel(R) Core(TM) i9–11900KB CPU @ 3.30GHz Does the honeypot return the correct values when uname -a is run? (Yay/Nay) Nay What flag must be set to pipe wget output into bash? -O How would you disable bash history using unset ? unset HISTFILE What brand of device is the bot in the first sample searching for? (BotCommands/Sample1.txt) Do a simple google search of the processes Mikrotik What are the commands in the second sample changing? ...
Read more

TryHackMe | DFIR: An Introduction WriteUp

Image
  Introductory room for the DFIR module Link - https://tryhackme.com/room/introductoryroomdfirmodule What does DFIR stand for? Digital Forensics and Incident Response DFIR requires expertise in two fields. One of the fields is Digital Forensics. What is the other field? Incident Response. Complete the timeline creation exercise in the attached static site. What is the flag that you get after completion? At what stage of the IR process are disrupted services brought back online as they were before the incident? recovery At what stage of the IR process is the threat evicted from the network after performing the forensic analysis? eradication What is the NIST-equivalent of the step called “Lessons learned” in the SANS process? Post-incident Activity That’s it! See you in the next Room :)
Read more

TryHackMe | Intro to Cyber Threat Intel WriteUp

Image
  Introducing cyber threat intelligence and related topics, such as relevant standards and frameworks. Link - https://tryhackme.com/room/cyberthreatintel What does CTI stand for? Cyber Threat Intelligence IP addresses, Hashes and other threat artefacts would be found under which Threat Intelligence classification? Technical Intel At which phase of the lifecycle is data made usable through sorting, organising, correlation and presentation? processing During which phase do security analysts get the chance to define the questions to investigate incidents? direction What sharing models are supported by TAXII? collection and channel When an adversary has obtained access to a network and is extracting data, what phase of the kill chain are they on? action on objectives What was the source email address? vipivillain@badbank.com What was the name of the file downloaded? flbpfuh.exe After building the threat profile, what message do you receive? After solving below you get code That’s it! S...
Read more