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

Cisco Firepower Management Center (FMC), when configured with Snort rules, classifies attacks with signature categories such as FILE-OFFICE for Microsoft Office-based exploits. One of the critical threats involving Microsoft Office is a known vector involving Microsoft Graphics, which attackers exploit forremote code execution (RCE). RCE vulnerabilities enable attackers to execute arbitrary commands or code on the target machine—making this classification high-severity.

The alert "FILE-OFFICE Microsoft Graphics remote code execution attempt" is consistent with what Cisco and Snort define for such threats and appears in rulesets addressing vulnerabilities like CVE-2017-0001.

TheCisco Secure Firewall Threat Defense (Firepower)includes advanced capabilities such as intrusion prevention, URL filtering, and deep packet inspection. According to the CyberOps guide, it can detect and block C2 communications by analyzing traffic patterns and comparing them to threat intelligence data. The guide specifically states: "Advanced solutions such as Firepower provide detection capabilities for command and control (C2) traffic by identifying unusual outbound connections and behavioral anomalies".

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 withHTTP/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/Lk9tdZto/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).