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

Fileless malware operates in memory and often leverages legitimate tools such as PowerShell to avoid traditional file-based detection. Since these threats don't leave typical file traces, analysts must rely on PowerShell event logs to trace suspicious or unauthorized script execution.

The Cisco CyberOps Associate guide explicitly states:

“PowerShell logs provide insight into script block execution and can reveal indicators of fileless attacks that reside in memory.”

Hence, PowerShell event logs are the most effective forensic source for detecting fileless malware activity on Windows systems.

In the recovery phase, the goal is to restore affected systems to normal operations and ensure the threat has been completely eradicated. According to the CyberOps Associate guide:

"This phase may include restoring data from clean backups, replacing compromised systems, and the re-installation of the Operating System (OS) and applications".

Also:

"During recovery, scanning hosts with updated antivirus and removing vulnerabilities ensures systems do not get reinfected".