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Training Camp • Cybersecurity Glossary
Fileless ransomware runs in memory using legitimate tools like PowerShell to encrypt data while evading file-based antivirus detection.
Fileless Ransomware Definition: Fileless ransomware runs in memory using legitimate tools like PowerShell to encrypt data while evading file-based antivirus detection.
Fileless ransomware is ransomware that operates primarily in memory and abuses legitimate built-in tools such as PowerShell, WMI, and other living-off-the-land binaries instead of writing a traditional malicious executable to disk. By avoiding files that signature-based antivirus would scan, it evades many endpoint defenses and leaves fewer forensic artifacts. Detection typically relies on behavioral and memory analysis rather than file scanning.
Fileless Ransomware is one of the topics you'll master in the CEH Boot Camp.
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