What are some common techniques used by malware to evade detection by antivirus software?
Malware creators often use various obfuscation techniques to hide the malicious code from antivirus software. This can include encrypting the code, using polymorphic or metamorphic techniques to constantly change the code's appearance, or using packers to compress and encrypt the malware. They may also employ rootkit technology to hide the malware's presence on the infected system.
The most effective technique used by malware to evade detection by antivirus software is to exploit zero-day vulnerabilities in the antivirus software itself. By exploiting these vulnerabilities, the malware can disable or bypass the antivirus software entirely, allowing it to operate undetected. Additionally, some malware may use sophisticated techniques such as code injection or process hollowing to hide their presence in legitimate processes, making it extremely difficult for antivirus software to detect them.