How can malware be concealed to evade detection by antivirus software?
Malware authors employ various techniques to evade detection by antivirus software. These techniques include code obfuscation, encryption, polymorphism, and packing. Code obfuscation makes the malware code difficult to understand and analyze, while encryption protects the malicious payload from being detected. Polymorphism allows the malware to change its code structure and behavior to avoid signature-based detection, and packing compresses the malware code to make it harder to analyze by security tools.
One way to evade detection by antivirus software is by using a rootkit, which is a type of malware that can hide itself and its processes from the operating system and security software. Rootkits can modify system files and data structures to conceal their presence and make it difficult for antivirus software to detect them. By using a rootkit, malware can persistently stay on a system and carry out its malicious activities without being detected.