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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Fundamentals | 20% | - Encoding and obfuscation techniques - Network infrastructure device forensics - Evidence collection in virtualized environments - Antiforensic tactics, techniques, and procedures - Root cause analysis reporting components - YARA rules for malware identification and classification |
| Topic 2: Forensics Techniques | 20% | - Host-based evidence location and collection - MITRE ATT&CK framework for fileless malware analysis - Script analysis (Python, PowerShell, Bash) for log processing - Identifying Indicators of Compromise (IOC) from tools output - Forensic tools: Volatility, Sysinternals, SIFT, TCPdump |
| Topic 3: Malware Analysis | 15% | - Reverse engineering principles - Malware family and campaign identification - Malware classification and behavior analysis - Static and dynamic malware analysis |
| Topic 4: Incident Response Techniques | 30% | - Interpreting alerts from SIEM, IDS/IPS, syslog - Post-incident analysis and improvement actions - Threat intelligence interpretation: IOCs, IOAs, actor profiling - Attack vector analysis and mitigation recommendations - Cisco security solutions for detection and prevention - Correlating host and network activity data - Response to zero-day exploits and vulnerabilities |
| Topic 5: Forensics Processes | 15% | - Data acquisition: memory, disk, network - Evidence handling and chain of custody - Legal and compliance considerations - Antiforensic techniques: debugging, geolocation, obfuscation |
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NEW QUESTION # 153
Customers cannot access a company's internal Apache web server. A security engineer investigates and determines that, several hours earlier, there were multiple failed SSH authentication attempts for the root account. After a successful login, the root user executed the sudo apt purge apache2 command. Which two Indicators of Attack can be determined from this information? (Choose two.)
Answer: A,B
Explanation:
The repeated failed SSH authentications followed by a successful root login form a strong sequence indicating compromised user access. After entry, the account runs apt purge apache2, which removes the Apache package and its configuration data, directly explaining why customers can no longer reach the service. That command is an unauthorized system modification. Privilege escalation is not demonstrated because the successful session is already associated with root; no transition from lower to higher privilege is shown. The evidence also does not establish malware propagation or the traffic volume expected in a DDoS attack.
CBRFIR Incident Response Techniques objectives 3.1 and 3.2 require responders to interpret security and system logs and correlate host and network activity by incident type. Here, authentication records and package-management activity create a coherent attack chain: credential compromise followed by destructive administrative action. Cisco CBRFIR v1.2 exam topics
NEW QUESTION # 154
Refer to the exhibit.
No. Time Source Destination Protocol Length Info
4001 11.001245 192.168.10.5 172.217.20.14 TLSv1.2 1514 Client Hello
4002 11.002331 172.217.20.14 192.168.10.5 TLSv1.2 1514 Server Hello, Certificate
4003 11.003112 192.168.10.5 172.217.20.14 TLSv1.2 314 Client Key Exchange
4004 11.004551 172.217.20.14 192.168.10.5 TLSv1.2 286 Change Cipher Spec
4005 11.005778 192.168.10.5 172.217.20.14 TLSv1.2 1298 Application Data What does the log activity indicate?
Answer: D
Explanation:
The packet sequence shows a successful TLS 1.2 negotiation between 192.168.10.5 and 172.217.20.14.
The client begins with Client Hello, the server answers with Server Hello and its certificate, and the client supplies key-exchange information. Change Cipher Spec indicates that the parties are transitioning to the negotiated cryptographic parameters, after which Application Data appears. This progression is characteristic of an established TLS session, matching CBRFIR objective 2.3(c), network- traffic analysis for anomaly detection. It does not prove that a file was transferred because Application Data can carry many application transactions. No DNS protocol or query appears, and the completed handshake followed by encrypted data contradicts a failed TCP connection. Cisco's SSL transaction documentation identifies handshake, Change Cipher Spec, and Application Data as TLS/SSL record types.
NEW QUESTION # 155
Refer to the exhibit.
Answer: B
Explanation:
The string shown is long, alphanumeric, and includes both uppercase and lowercase letters with numbers- characteristics of Base64 encoding. This format is widely used to obfuscate payloads in malicious scripts, particularly in phishing or malware campaigns. Base64 encoding is also supported by Python and other platforms for data transformation.
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NEW QUESTION # 156
Refer to the exhibit.
A security analyst notices unusual connections while monitoring traffic. What is the attack vector, and which action should be taken to prevent this type of event?
Answer: B
Explanation:
The exhibit shows multiple ARP reply packets with the same IP addresses (192.168.51.105 and
192.168.51.201) being mapped to different MAC addresses, which triggers the message: "duplicate use of
[IP] detected". This is a strong indicator of an ARP spoofing (or poisoning) attack.
ARP spoofing occurs when a malicious actor sends falsified ARP messages to associate their MAC address with the IP address of another host. This misleads other devices on the network and allows interception or redirection of traffic.
The Cisco CyberOps Associate guide specifically recommends configuring port security on switches as a method to mitigate ARP spoofing, by limiting the number of MAC addresses allowed per port or statically assigning legitimate MAC addresses to switch ports.
NEW QUESTION # 157
A cybersecurity analyst detects fileless malware activity on secure endpoints. What should be done next?
Answer: D
Explanation:
Fileless malware resides in memory and does not leave traditional file artifacts, making it difficult for antivirus solutions to detect. The most effective next step is to isolate the endpoints to prevent lateral movement and perform memory forensics to capture volatile data and identify any running malicious processes.
NEW QUESTION # 158
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