The threat of fileless malware and its potential to harm enterprises is growing. Malware leverages what threat actors call living off the land Malware doesnt have to drop a file to use these programs for bad intentions. One recent attack discovered by FireEye combined PowerShell, VB scripts and.NET in a single lethal package. Organizations should also disable Windows programs that aren’t needed, including Office macros, which are often abused by malware writers. Many fileless exploits count on the profligate use of rights that are attached to users that have since left the company.”]
Source: https://securityintelligence.com/how-to-defend-your-organization-against-fileless-malware-attacks/