TryHackMe challenge Conti (medium level)

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An Exchange server was compromised with ransomware (CVE-2020-0796, CVE-2018-13374, CVE-2018-13379). Use Splunk to investigate how the attackers compromised the server.




Question "What was the command the attacker used to add a new user to the compromised system?" 

-if you search on google what event id is for creating new user "Event 4720" .


Question  What is the web shell the exploit deployed to the system? Hint : Try looking in the IIS logs for POST requests. 

-search with extension .aspx (google : What is ASPX used for? - > Active Server Page Extended (ASPX) is an open-source development framework used by web developers to generate dynamic web pages using the . Net and C# programming languages)


On the last question here is the link


I hope you enjoy with this challange !! 


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