What comes to mind when you hear the word malware? Most people may think of phishing messages containing malicious files. Once you download those files to your computer, they infect the entire system with a virus, making it impossible to use your computer.
While this type of cyber-attack is dangerous, there is another form of malware you need to be aware of. This guide provides an in-depth look at the threat of fileless malware and what you can do to protect yourself.
What Is Fileless Malware, and How Do Cybercriminals Use It?
File-based malware is typically detectable and preventable through antivirus software. It involves malicious files that, when downloaded, infect a computer’s hard drive, rendering it unusable. In contrast, fileless malware presents a far greater challenge for detection.
Fileless malware operates by tricking users into opening links or email attachments. Once the message is opened, instead of infecting the hard drive, a malicious code is directly injected into the computer’s memory. This memory-based attack is exceptionally hard to identify and can corrupt an entire system.
One motive behind fileless malware attacks is to sabotage a business operation from within. Cybercriminals exploit commonly used software, including JavaScript applications, and may target native tools like Windows Management Instrumentation (WMI) or Microsoft PowerShell.
How To Protect Your Business From the Threat of Fileless Malware
If you’re wondering how to keep your business safe from this sneaky cyber-attack, we have some tips to help you. Experts suggest the following steps to protect your company from malicious hackers:
- Look for Indicators of Attack (IOAs): Rather than relying solely on Indicators of Compromise (IOCs), IT professionals should be vigilant for IOAs. These indicators signal a potential attack and enable your IT staff to respond promptly.
- Deploy a Managed Threat-Hunting Service: Managing the security of your network can be overwhelming for your in-house IT department. Consider enlisting the services of a managed threat-hunting provider. These third-party experts monitor your network around the clock and actively seek out threats that may elude other security systems.
- Employee Education: Cybercriminals often target vulnerable users to execute their schemes. Once a victim falls prey to their tactics, data exfiltration can begin. It’s crucial to educate your employees on recognizing suspicious messages and reporting any unusual cyber activity to your IT professionals.
Fileless malware represents a hidden threat that can compromise your business’s security and operations. As cyberattacks evolve, it is imperative to stay informed about emerging threats and take proactive steps to protect your company. By focusing on IOAs, engaging third-party threat-hunting services, and educating your employees, you can strengthen your defenses against the elusive menace of fileless malware. Safeguarding your business from this type of threat is essential in today’s digital landscape.
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