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OSSEC: Basics I

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

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Host Intrusion Detection Systems can provide a wealth of information about a running system. They can help identify anomalies which could have been caused by a security incident and also monitor specified resources.

In this lab exercise, OSSEC event logs of a compromised machine are provided. Analyze the logs and answer the following questions:

  1. The credentials of a compromised user account were used by the attacker to access the server machine over SSH. What was the name of the compromised user?
  2. The attacker modified a system file. Provide the full path of that file.
  3. The attacker created a backdoor user on the system. What was the password hash of that user?
  4. What was the IP address of the attacker machine?


Guidelines:

  • OSSEC logs are present at /var/ossec/logs/alerts/alerts.log


Verify:
1. The credentials of a compromised user account were used by the attacker to access the server machine over SSH. What was the name of the compromised user?
 
2. The attacker modified a system file. Provide full path of that file.
 
3. The attacker created a backdoor user on the system. What was the password hash of that user?
 
4. What was the IP address of the attacker machine?
 

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