Search Evasion Techniques
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Base64 Data Obfuscation
Base64 is a simple encoding scheme that is often used by malware to represent binary data in an ASCII string. This allows the malware to encode and transmit binary data, such as a payload or network traffic, in a way that is more compact and easier to transmit over text-based communication channels.
Base64 uses a 64-character alphabet to encode …
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.
…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" …
ScrubCrypt Packers
ScrubCrypt is a malware obfuscation and encryption framework, derived from the earlier JLaive Batchfuscator crypter. It is designed to aid cybercriminals in evading detection and analysis by using a variety of techniques to conceal and protect the malicious software.
ScrubCrypt is advertised on cybercrime forums to employ encryption, code morphing, and (allegedly) polymorphism to create obfuscated malware payloads that …