Search Evasion Techniques
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XOR Operation Data Obfuscation
The XOR operation is a common technique used by malware to hide data. This is because it is a simple and reversible function, meaning that the same operation can be used to both encode and decode data. In the XOR operation, a key is used to create a ciphertext, which is then used to encrypt the original data.
The encrypted …
Custom Encoding Data Obfuscation
Malware often uses custom encoding schemes to conceal their payloads and avoid detection. These custom schemes can be full custom layers, or they can be variations of known algorithms such as XOR or Base64. Using custom encoding schemes allows malware to encode their payloads in a unique way that can be difficult for security tools and forensic investigators to detect. …
Opcode Obfuscation Anti-Disassembly
Opcode obfuscation is an anti-disassembling technique that involves modifying the opcodes of a program's machine language instructions in order to make it more difficult for a disassembler to accurately reconstruct the original instructions. This can be done in a variety of ways, such as by using equivalent but different opcodes for the same operation, by adding additional instructions or data …
API Obfuscation Anti-Disassembly
API obfuscation is a technique used by malware to make it more difficult for security analysts to understand and analyze the code. This is typically done by using a technique called API hashing, which replaces the names of API functions with a hashed value. When an analyst runs the malware through a disassembler tool, the hashed values are printed instead …