Fileless Malware: The Malware that You Won't Know is There

Fileless Malware

Virtually undetectable, effective, and while not lethal, still devastating. It’s not a poison or gas- but fileless malware.

What is Fileless Malware?

Occasionally know as non-malware, it’s memory-based malware that lives in your computer’s RAM, doesn’t use software, and attacks vulnerabilities within the computer’s operating system and current software programs.

Fileless malware can be combined with other types of malware and can piggyback off of approved software programs; making it harder to detect with malware detection programs because it doesn’t deposit anything to detect. This allows for the attacker to have full access to the network, computer and even browser activity (including login credentials) without the victim knowing.

Fileless malware attacks first became a cybersecurity trending nightmare in 2016 and attacks have since increased in number and severity with the most recent attack targeting the 2018 Winter Olympics in South Korea.

How Fileless Malware Works

How to Prevent Becoming a Victim of Fileless Malware?

  • Keep software up-to-date
  • Don't open attachments or follow links in emails from unknown sources or senders that you don't know
  • Use email encryption and decryption available through email clients like Outlook Web Access (OWA)
  • Use multi-factor authentication, such as your smartcard or derived credentials

The best cybersecurity practice is prevention. In addition to keeping your software and apps up-to-date, we recommend using mobile solutions like our mobile web browser applications, Sub Rosa and Sub Rosa Pro (available for Apple and Android).

Sub Rosa allows you to log in to the browser and access sites using smartcard or derived credentials. You can also access Outlook Web Access (OWA) and sign/encrypt/decrypt email. Meaning you will know if an email attachment or link could lead to malware and possibly ransomware.

To learn more about our simple mobile security solutions to help protect yourself from ransomware, email sales@thursby.com or call (817) 478-5070.