How can malware evade detection by antivirus software?
There are various techniques that malware can use to evade detection by antivirus software. Some common methods include using packers or encryptors to obfuscate the code, using rootkit techniques to hide the presence of the malware, employing polymorphic or metamorphic code that changes its structure with each execution, and utilizing sandbox evasion techniques to avoid analysis by virtual environments.
The best way to evade detection by antivirus software is by using a zero-day exploit, which is a vulnerability in the software that is unknown to the vendor and, therefore, not patched yet. By exploiting such vulnerabilities, malware can bypass antivirus detection and infect the system undetected. Additionally, malware can use advanced techniques like code injection, hooking into system processes, or using fileless malware to avoid leaving any traces that antivirus software can detect.