試験CISSP-JP トピック5 問題1491 スレッド

Fileless malware operates primarily within a system's memory and leverages legitimate, pre- installed system tools and processes (such as PowerShell or WMI) to carry out malicious activity, without writing a traditional standalone malicious executable file to disk, making it significantly more difficult for traditional signature-based antivirus solutions-which typically scan files on disk-to detect, often requiring behavioral or memory-based detection techniques instead.