CAS-005 無料問題集「CompTIA SecurityX Certification」
Audit findings indicate several user endpoints are not utilizing full disk encryption During me remediation process, a compliance analyst reviews the testing details for the endpoints and notes the endpoint device configuration does not support full disk encryption Which of the following is the most likely reason me device must be replaced'
正解：E
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During the course of normal SOC operations, three anomalous events occurred and were flagged as potential IoCs. Evidence for each of these potential IoCs is provided.
INSTRUCTIONS
Review each of the events and select the appropriate analysis and remediation options for each IoC.
INSTRUCTIONS
Review each of the events and select the appropriate analysis and remediation options for each IoC.
正解：
See the complete solution below in Explanation:
Explanation:
Analysis and Remediation Options for Each IoC:
IoC 1:
* Evidence:
* Source: Apache_httpd
* Type: DNSQ
* Dest: @10.1.1.1:53, @10.1.2.5
* Data: update.s.domain, CNAME 3a129sk219r9slmfkzzz000.s.domain, 108.158.253.253
* Analysis:
* Analysis: The service is attempting to resolve a malicious domain.
* Reason: The DNS queries and the nature of the CNAME resolution indicate that the service is trying to resolve potentially harmful domains, which is a common tactic used by malware to connect to command-and-control servers.
* Remediation:
* Remediation: Implement a blocklist for known malicious ports.
* Reason: Blocking known malicious domains at the DNS level prevents the resolution of harmful domains, thereby protecting the network from potential connections to malicious servers.
IoC 2:
* Evidence:
* Src: 10.0.5.5
* Dst: 10.1.2.1, 10.1.2.2, 10.1.2.3, 10.1.2.4, 10.1.2.5
* Proto: IP_ICMP
* Data: ECHO
* Action: Drop
* Analysis:
* Analysis: Someone is footprinting a network subnet.
* Reason: The repeated ICMP ECHO requests to different addresses within a subnet indicate that someone is scanning the network to discover active hosts, a common reconnaissance technique used by attackers.
* Remediation:
* Remediation: Block ping requests across the WAN interface.
* Reason: Blocking ICMP ECHO requests on the WAN interface can prevent attackers from using ping sweeps to gather information about the network topology and active devices.
IoC 3:
* Evidence:
* Proxylog:
* GET
/announce?info_hash=%01dff%27f%21%10%c5%wp%4e%1d%6f%63%3c%49%6d&peer_i
* Uploaded=0&downloaded=0&left=3767869&compact=1&ip=10.5.1.26&event=started
* User-Agent: RAZA 2.1.0.0
* Host: localhost
* Connection: Keep-Alive
* HTTP 200 OK
* Analysis:
* Analysis: An employee is using P2P services to download files.
* Reason: The HTTP GET request with parameters related to a BitTorrent client indicates that the employee is using peer-to-peer (P2P) services, which can lead to unauthorized data transfer and potential security risks.
* Remediation:
* Remediation: Enforce endpoint controls on third-party software installations.
* Reason: By enforcing strict endpoint controls, you can prevent the installation and use of unauthorized software, such as P2P clients, thereby mitigating the risk of data leaks and other security threats associated with such applications.
References:
* CompTIA Security+ Study Guide: This guide offers detailed explanations on identifying and mitigating various types of Indicators of Compromise (IoCs) and the corresponding analysis and remediation strategies.
* CompTIA Security+ Exam Objectives: These objectives cover key concepts in network security monitoring and incident response, providing guidelines on how to handle different types of security
* events.
* Security Operations Center (SOC) Best Practices: This resource outlines effective strategies for analyzing and responding to anomalous events within a SOC, including the use of blocklists, endpoint controls, and network configuration changes.
By accurately analyzing the nature of each IoC and applying the appropriate remediation measures, the organization can effectively mitigate potential security threats and maintain a robust security posture.
Explanation:
Analysis and Remediation Options for Each IoC:
IoC 1:
* Evidence:
* Source: Apache_httpd
* Type: DNSQ
* Dest: @10.1.1.1:53, @10.1.2.5
* Data: update.s.domain, CNAME 3a129sk219r9slmfkzzz000.s.domain, 108.158.253.253
* Analysis:
* Analysis: The service is attempting to resolve a malicious domain.
* Reason: The DNS queries and the nature of the CNAME resolution indicate that the service is trying to resolve potentially harmful domains, which is a common tactic used by malware to connect to command-and-control servers.
* Remediation:
* Remediation: Implement a blocklist for known malicious ports.
* Reason: Blocking known malicious domains at the DNS level prevents the resolution of harmful domains, thereby protecting the network from potential connections to malicious servers.
IoC 2:
* Evidence:
* Src: 10.0.5.5
* Dst: 10.1.2.1, 10.1.2.2, 10.1.2.3, 10.1.2.4, 10.1.2.5
* Proto: IP_ICMP
* Data: ECHO
* Action: Drop
* Analysis:
* Analysis: Someone is footprinting a network subnet.
* Reason: The repeated ICMP ECHO requests to different addresses within a subnet indicate that someone is scanning the network to discover active hosts, a common reconnaissance technique used by attackers.
* Remediation:
* Remediation: Block ping requests across the WAN interface.
* Reason: Blocking ICMP ECHO requests on the WAN interface can prevent attackers from using ping sweeps to gather information about the network topology and active devices.
IoC 3:
* Evidence:
* Proxylog:
* GET
/announce?info_hash=%01dff%27f%21%10%c5%wp%4e%1d%6f%63%3c%49%6d&peer_i
* Uploaded=0&downloaded=0&left=3767869&compact=1&ip=10.5.1.26&event=started
* User-Agent: RAZA 2.1.0.0
* Host: localhost
* Connection: Keep-Alive
* HTTP 200 OK
* Analysis:
* Analysis: An employee is using P2P services to download files.
* Reason: The HTTP GET request with parameters related to a BitTorrent client indicates that the employee is using peer-to-peer (P2P) services, which can lead to unauthorized data transfer and potential security risks.
* Remediation:
* Remediation: Enforce endpoint controls on third-party software installations.
* Reason: By enforcing strict endpoint controls, you can prevent the installation and use of unauthorized software, such as P2P clients, thereby mitigating the risk of data leaks and other security threats associated with such applications.
References:
* CompTIA Security+ Study Guide: This guide offers detailed explanations on identifying and mitigating various types of Indicators of Compromise (IoCs) and the corresponding analysis and remediation strategies.
* CompTIA Security+ Exam Objectives: These objectives cover key concepts in network security monitoring and incident response, providing guidelines on how to handle different types of security
* events.
* Security Operations Center (SOC) Best Practices: This resource outlines effective strategies for analyzing and responding to anomalous events within a SOC, including the use of blocklists, endpoint controls, and network configuration changes.
By accurately analyzing the nature of each IoC and applying the appropriate remediation measures, the organization can effectively mitigate potential security threats and maintain a robust security posture.
A security administrator needs to automate alerting. The server generates structured log files that need to be parsed to determine whether an alarm has been triggered Given the following code function:
Which of the following is most likely the log input that the code will parse?
Which of the following is most likely the log input that the code will parse?
正解：B
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Company A and Company D ate merging Company A's compliance reports indicate branch protections are not in place A security analyst needs to ensure that potential threats to the software development life cycle are addressed. Which of the following should me analyst cons<der when completing this basic?
正解：A
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An organization wants to manage specialized endpoints and needs a solution that provides the ability to
* Centrally manage configurations
* Push policies.
* Remotely wipe devices
* Maintain asset inventory
Which of the following should the organization do to best meet these requirements?
* Centrally manage configurations
* Push policies.
* Remotely wipe devices
* Maintain asset inventory
Which of the following should the organization do to best meet these requirements?
正解：C
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A systems administrator wants to introduce a newly released feature for an internal application. The administrate docs not want to test the feature in the production environment. Which of the following locations is the best place to test the new feature?
正解：D
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A systems administrator works with engineers to process and address vulnerabilities as a result of continuous scanning activities. The primary challenge faced by the administrator is differentiating between valid and invalid findings. Which of the following would the systems administrator most likely verify is properly configured?
正解：A
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