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| Section | Objectives |
|---|---|
| Incident Response Process | - Incident identification and triage - Preparation and readiness for security incidents - Containment, eradication, and recovery procedures |
| Network Forensics and Traffic Analysis | - Identifying malicious traffic patterns - Network flow analysis using Cisco tools - Packet capture and analysis |
| Digital Forensics Fundamentals | - Evidence handling and chain of custody - Disk and memory forensics concepts - Forensic data acquisition techniques |
| Security Monitoring and Cisco Technologies | - Cisco Secure Network Analytics (Stealthwatch) - Cisco Secure Endpoint (AMP) usage - Log correlation and SIEM concepts |
| Endpoint and Malware Analysis | - Malware behavior identification - Endpoint telemetry analysis - Use of Cisco endpoint security technologies |
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NEW QUESTION # 28
Refer to the exhibit.
A company that uses only the Unix platform implemented an intrusion detection system. After the initial configuration, the number of alerts is overwhelming, and an engineer needs to analyze and classify the alerts.
The highest number of alerts were generated from the signature shown in the exhibit. Which classification should the engineer assign to this event?
Answer: C
Explanation:
The alert shown is based on a Snort rule for a Unicode directory traversal attack against IIS web servers (Microsoft platform). The key detail here is the payload content "../..%c0%af../" which is a classic IIS-specific exploit related to CVE-2000-0884.
Since the company only uses Unix systems, they are not vulnerable to this IIS-specific attack. Therefore, these alerts are triggered by irrelevant traffic or misapplied signatures, resulting in False Positives.
As defined in the Cisco CyberOps guide:
"False Positive: an alert is generated for traffic that is not actually malicious or relevant to the protected environment".
NEW QUESTION # 29
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.)
Answer: D,E
Explanation:
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.
NEW QUESTION # 30
Refer to the exhibit.
Which element in this email is an indicator of attack?
Answer: C
NEW QUESTION # 31
An engineer is investigating a ticket from the accounting department in which a user discovered an unexpected application on their workstation. Several alerts are seen from the intrusion detection system of unknown outgoing internet traffic from this workstation. The engineer also notices a degraded processing capability, which complicates the analysis process. Which two actions should the engineer take? (Choose two.)
Answer: B,C
Explanation:
When suspicious activity is detected on a workstation, immediate steps need to be taken to preserve evidence and prevent further compromise:
* Disconnecting the system from the network (C)is crucial to stop potential exfiltration of data or ongoing communications with a command-and-control server. This isolation prevents further spread or damage while preserving the state of the compromised system for further investigation.
* Taking an image of the workstation (E)is part of the forensics acquisition process. It involves creating a bit-by-bit copy of the system's disk, which preserves all evidence in its current state. This allows for thorough forensic analysis without affecting the original evidence.
These steps align with the best practices outlined in the incident response and forensics processes (as described in theCyberOps Technologies (CBRFIR) 300-215 study guide). Specifically, in theIdentification and Containmentphases of the incident response cycle, it's emphasized that isolating the system and preserving evidence through imaging are critical to ensuring both containment of the threat and successful forensic investigation.
Reference:CyberOps Technologies (CBRFIR) 300-215 study guide, Chapter: Understanding the Security Incident Response Process, Identification and Containment Phases, page 102-104.
NEW QUESTION # 32
Refer to the exhibit.
Registry Key Activity
MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN modified (1)
MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUNONCE created (1),
modified (2)
MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON modified (1) MACHINE\SYSTEM\CURRENTCONTROLSET\CONTROL\SESSION MANAGER\ENVIRONMENT modified (1) MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER modified (2) MACHINE\SOFTWARE\MICROSOFT\COMMAND PROCESSOR modified (1) For user S-5-21-0533532869, which registry key shows evidence of persistence through a newly created autorun entry?
Answer: C
Explanation:
The RunOnce row is the only autorun-related key marked as newly created as well as modified.
Windows processes values under RunOnce when a user logs on and normally deletes each value after it is invoked. An attacker can therefore create a value containing a malicious command so that the payload executes automatically at the next logon, providing boot-or-logon autostart persistence. The ordinary Run key is also an autorun location, but the exhibit records only a modification, not the newly created entry specified in the question. Winlogon and Environment can be security-relevant, yet their displayed activity does not match the required evidence. Option D is consequently the precise artifact- based conclusion. This supports CBRFIR objectives 2.3 and 3.9 concerning host artifacts and indicators. Microsoft documents the behavior and locations of the Run and RunOnce keys .
NEW QUESTION # 33
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