The Evolution to Fileless Malware

Contributed by David Patten

Malware and viruses have been around since the early days of computers. The computer security industry has often played a game of cat and mouse with malware authors in which the malware authors create new and complex malware programs and the security industry develops better programs to protect and prevent malware. Recently malware has taken a new approach to attacking computers, fileless malware that does not rely on writing complex malware programs. This new fileless malware depends on commonly installed programs to cause damage and extract information. This paper provides a look at the evolution malware followed by an examination of the use of .NET Framework, PowerShell, offensive PowerShell tools, and PowerShell Forensic Tools.

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