To investigate the callouts made post infection, it’s essential to know where the callouts were made to (domain names) and from which host IP addresses they originated. This information can help trace back the source and destination, aiding in understanding the nature of the callouts. References: https://www.cisco.com/c/en/us/td/docs/security/firepower/60/configuration/guide/fpmc-config-guide-v60/Working_with_Indicators_of_Compromise.html

The security scenario involves protecting the company from known issues that trigger adware and addressing a recent incident that could harm the system.

This scenario involves identifying vulnerabilities (weaknesses in the system that can be exploited) and threats (potential harm that can exploit these vulnerabilities).

A vulnerability is an inherent flaw in the system, while a threat is an event or condition that has the potential to exploit the vulnerability.

The security engineer needs to assess both the vulnerabilities present and the threats that could exploit these vulnerabilities to implement effective protection measures.

References

Cisco Cybersecurity Operations Fundamentals

Concepts of Vulnerability and Threat in Cybersecurity

Best Practices in Vulnerability Management

A screenshot of a computer Description automatically generated

The difference between tampered and untampered disk images is:

Tampered Images: These are disk images that have been altered or modified in some way after their initial creation. The stored hash and the computed hash will not match if the image has been tampered with.

Untampered Images: These are disk images that have not been altered since their creation. They are considered authentic and reliable for forensic investigations. The stored hash and the computed hash will match, confirming that the image has remained unchanged.

Therefore, the correct answer is: D. Untampered images are used for forensic investigations.

 Traffic fragmentation is an evasion technique where an attacker splits malicious payloads into smaller packets. This can help avoid detection since some security systems may not reassemble these packets to inspect the complete payload.

The packet capture shows that IP address 192.168.88.149, using source port 80 (common for HTTP traffic), initiated communication with IP address 192.168.88.12 at destination port 49098, using the TCP protocol, indicating a typical client-server interaction over the web.

= These explanations are based on general cybersecurity principles as outlined in Cisco’s training and certification content, such as the Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) and other related Cisco resources.