300-215 Exam Dumps - Conducting Forensic Analysis and Incident Response Using Cisco CyberOps Technologies (CBRFIR)

According to the CyberOps Technologies (CBRFIR) 300-215 study guide curriculum, when analyzing suspicious behavior—especially when scripts or shell commands are executed from applications like Word (which is uncommon)—the encoded PowerShell payload must be decoded to determine if malicious intent is present. Deobfuscation is a critical step in identifying command-and-control behavior, persistence, or malware execution paths.

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The Wireshark capture shows a series of HTTP requests and responses:

The client (10.1.21.101) sends a GET request for /Lk9tdZ.

The server (209.141.51.196) responds with HTTP/1.1 302 Found, which is a standard HTTP status code indicating a redirection.

The subsequent GET request from the client is for /files/1.bin, which indicates it followed the redirect.

This behavior confirms that the server is issuing an HTTP 302 redirect from the initial request path /Lk9tdZ to /files/1.bin. This is often observed in malware command-and-control behavior or file download staging.

Option A is incorrect: 302 is a status code, not a data size.

Option C is incorrect: port 49723 is a source/destination ephemeral port, not a redirect target.

Option D is incorrect: communication is over HTTP, not HTTPS (which would indicate encryption).

TCPdump is a CLI-based packet capture tool that is widely used for real-time traffic inspection and analysis on Unix/Linux systems.

TCPshark is a variant CLI tool used similarly for packet analysis.

Although Wireshark is a powerful network protocol analyzer, it requires a GUI. Therefore, it is not suitable for environments without a graphical interface.

Comprehensive and Detailed Explanation:

The log entry contains the following key elements:

The timestamp: (04/Jan/2022:20:18:06 +0000)

HTTP method and URI: "GET /%60%60%60%60%60%60/ HTTP/2.0"

HTTP status code: 404

User-Agent: Mozilla/5.0 ... Firefox/95.0

The status code 404 indicates that the requested resource was not found on the server. This is a standard HTTP response that signifies the server could not locate the requested URI (in this case, likely due to a malformed or invalid path /\`````/, where %60 is the URL-encoded form of the backtick character "").

There is no clear evidence of SQL injection, WAF detection, or redirection in this log. The use of encoded backticks may suggest probing behavior, but the log does not show a definitive attack signature.

Therefore, the correct interpretation is:

Answer: D. The requested page was not found.

Volatility is an open-source memory forensics tool specifically designed for memory analysis. It allows forensic investigators to inspect memory dumps for running processes, hidden processes, injected code, and malicious activity in memory.

As per the Cisco CyberOps Associate study guide, “Volatility helps security professionals with both incident response and malware analysis. It can identify processes, registry artifacts, network connections, and memory-resident malware”.

While Memoryze (D) is also a memory analysis tool, Volatility is the more recognized, command-line driven tool used widely in industry and is directly highlighted in the curriculum.