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 …
Caesar Cipher Data Obfuscation
The Caesar Cipher is a simple encoding algorithm that was used during the Roman Empire to hide secret messages. In this algorithm, each letter of the plaintext is replaced with a letter that is a fixed number of positions down the alphabet. For example, if the shift value is 3, then the letter "A" would be replaced with "D", "B" …
ROL Data Obfuscation
ROL, or Rotate Left, is a simple encoding algorithm similar to the Caesar Cipher. In the ROL algorithm, each letter of the plaintext is replaced with a letter that is a fixed number of positions down the alphabet. For example, if the rotation value is 3, then the letter "A" would be replaced with "D", "B" would be replaced with …
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.
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