![]() ![]() ![]() ![]() This value acts as the key.Ģ) Possible key values range from 0-255 (decimal value).ģ) Attackers encode and obfuscate the original code by iterating through every byte of data and XORing each and every byte with the key selected in step 1. The following are the steps followed to obfuscate and de-obfuscate the code using the XOR technique: Obfuscationġ) Attacker randomly picks one byte value. The Boolean table for XOR operation looks like this: A Also, it is very simple to implement and can easily hide the malicious payload from getting detected. XOR is the most commonly used technique for obfuscating any malware. Let’s have a look at some of the basic malware techniques widely being used. Some of them are basic, while others are advanced. There are many obfuscation techniques being used by malware writers. Thus, most of the malware is obfuscated by default. Malware analysts can also analyze the malware and identify important information like strings and the URL with which the malware is communicating and implement necessary measures to prevent the malware from being executed. This software can be present in various forms like antivirus, Windows Defender, ad blockers and so on, which detect this malware and stop it at the perimeter. Usually, every computer or server has some software installed on it to detect and prevent malicious programs from being executed onto the local machine. ![]() Nearly every piece of malware uses obfuscation in some or the other way. Obfuscation is the most commonly used technique to conceal the original code written by the programmer, rendering the executable code difficult to read and hard to understand while maintaining the functionality of the written code. ![]()
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