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| Section | Objectives |
|---|---|
| Endpoint and Malware Analysis | - Endpoint telemetry analysis - Use of Cisco endpoint security technologies - Malware behavior identification |
| Digital Forensics Fundamentals | - Disk and memory forensics concepts - Forensic data acquisition techniques - Evidence handling and chain of custody |
| Network Forensics and Traffic Analysis | - Network flow analysis using Cisco tools - Identifying malicious traffic patterns - Packet capture and analysis |
| Incident Response Process | - Incident identification and triage - Containment, eradication, and recovery procedures - Preparation and readiness for security incidents |
| Security Monitoring and Cisco Technologies | - Cisco Secure Endpoint (AMP) usage - Log correlation and SIEM concepts - Cisco Secure Network Analytics (Stealthwatch) |
>> 300-215 Prüfungsaufgaben <<
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106. Frage
Refer to the exhibit.
After a cyber attack, an engineer is analyzing an alert that was missed on the intrusion detection system. The attack exploited a vulnerability in a business-critical, web-based application and violated its availability.
Which two mitigation techniques should the engineer recommend? (Choose two.)
Antwort: A,D
Begründung:
The alert indicates a WebDAV Stack Buffer Overflow, which is a memory corruption attack targeting the stack, a common vector for remote code execution or denial-of-service (DoS).
To mitigate such exploits, two effective system-hardening techniques are:
C). Address Space Layout Randomization (ASLR):Randomizes memory addresses used by system and application processes, making it difficult for attackers to predict where their malicious code will be executed.
E). Data Execution Prevention (DEP):Prevents execution of code from non-executable memory regions such as the stack, thus stopping buffer overflow attacks from successfully executing payloads.
Both are well-established protections against stack-based buffer overflow attacks and are strongly recommended in the Cisco CyberOps Associate guide and general security best practices.
107. Frage
Refer to the exhibit. An engineer needs to authenticate to the Cisco Umbrella Investigate API to retrieve details and traffic logs. What action is required in the script?
import requests
url = " https://investigate.api.umbrella.com/dnsdb/name/a/example.com.json " headers = {
" Authorization " : " " ,
" cache-control " : " no-cache "
}
response = requests.get(url, headers=headers)
print(response.text)
Antwort: D
Begründung:
The request already contains an Authorization header, but its value is empty. The engineer must place a valid access token in that field, normally in the form Authorization: Bearer < token > . Cisco's Investigate API documentation states that requests use HTTPS with Bearer-token authentication and that every request requires the token in the Authorization header. A new header is therefore unnecessary; the existing one must be populated. The endpoint is retrieving information, so the existing GET request is appropriate and adding PUT would change the operation incorrectly. Formatting is not the authentication failure. Tokens and API secrets must be protected, obtained through the approved Umbrella credential process, and never hard-coded in production source. This maps to CBRFIR Forensics Techniques objective 2.5, which includes scripting against Cisco Umbrella and other data sources. Cisco Umbrella Investigate authentication
108. Frage
Several previously unseen executable files are detected on an international bank's transaction servers after an overnight batch-processing update. The executables make covert outbound connections to a server in a jurisdiction known for harboring threat actors. Their creation time also coincides with a network-intrusion attempt that the SOC initially classified as unsuccessful. The IT engineer has collected the observations and available data. Which set of actions should occur next?
Antwort: D
Begründung:
After initial collection, the engineer should escalate the suspected compromise to the incident-response team and begin structured analysis. Comparing the new executables, timestamps, services, hashes, and configurations with trusted baselines helps determine what changed and whether the overnight update was abused. Investigating the intrusion attempt's source connects the allegedly unsuccessful event to the later files and outbound communications. Options A and D begin potentially disruptive containment before the authorized response team has assessed the transaction systems' criticality and selected a strategy. Option C adds external information sharing before the organization has validated scope and facts. NIST SP 800-61r3 states that incident handlers collect and analyze evidence, prioritize response, and investigate what happened, how, and why; it also requires escalation based on risk. This corresponds to CBRFIR incident analysis, correlation, and response-process objectives. NIST SP 800-61r3
109. Frage
What are YARA rules based upon?
Antwort: C
Begründung:
Explanation/Reference: https://en.wikipedia.org/wiki/YARA#:~:text=YARA%20is%20the%20name%20of,strings%20and
%20a%20boolean%20expression.
110. Frage
Refer to the exhibit.
Which two actions should be taken based on the intelligence information? (Choose two.)
Antwort: A,E
Begründung:
The STIX intelligence feed in the exhibit identifies specific malicious domains, such as:
* fightcovid19.shop
* nocovid19.shop
* stopcovid19.shop
These are categorized as "Malicious FQDN Indicator." The recommended cybersecurity actions when such threat intelligence is received are:
* D. Block network access to identified domains: This directly prevents users or systems from communicating with known malicious infrastructure and is a critical first step in threat mitigation.
* B. Add a SIEM rule to alert on connections to identified domains: This ensures that any attempted communication with these domains is flagged for immediate review and action, enabling real-time threat detection and incident response.
Blocking all .shop domains (Option A or C) would be overbroad and potentially disruptive, as many legitimate websites also use that TLD. Option E (routing to block hole) could be valid as a DNS strategy, but B and D represent the most actionable and precise responses per standard incident response practices.
Reference: CyberOps Technologies (CBRFIR) 300-215 study guide, Chapter on "Threat Intelligence Platforms," covering how to operationalize STIX/TAXII indicators via blocking and SIEM integration.
111. Frage
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