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

/etc/shadow: This file stores encrypted passwords and password aging information, including the date of the last password change (stored as the number of days since January 1, 1970). It is only readable by the root user, making it the primary source for forensic auditing of local password changes.

The string in the exhibit is a classic example of Base64 encoding. Base64 is used to encode binary data into ASCII characters, making it suitable for transmitting data over media that are designed to deal with textual data. It typically ends with one or two equal signs = (padding), which this string does. This format is commonly seen in obfuscated payloads or malware communications in the wild.

The correct next step in analyzing the malicious nature of the email is to evaluate the artifacts in Cisco Secure Malware Analytics (formerly Threat Grid). This tool provides a comprehensive sandbox environment where behavioral indicators like file execution, registry access, and domain connections are logged and scored.

The exhibit shows:

Remote PowerShell execution

Executable download from a flagged domain

SHA256 hash linked to malware

All these artifacts, as labeled in the Secure Malware Analytics output, are key indicators of compromise, and analyzing them further can confirm whether the email was part of a malicious campaign.

Thus, the best action is:

A. Evaluate the artifacts in Cisco Secure Malware Analytics.