Milfuscator Packers

Milfuscator is a tool used to obfuscate the code in a Portable Executable (PE) file by modifying and expanding the existing code in the ".text" section, without creating any new sections. It does this using the Zydis and AsmJit libraries, and is based on the concept of code mutation from a P2C project for the game Counter-Strike: Global Offensive. The …

Rootkit Defense Evasion [Mitre]

Adversaries may use rootkits to hide the presence of programs, files, network connections, services, drivers, and other system components. Rootkits are programs that hide the existence of malware by intercepting/hooking and modifying operating system API calls that supply system information.

Rootkits or rootkit enabling functionality may reside at the user or kernel level in the operating system or lower, …

Constant Blinding Data Obfuscation

Constant blinding can be employed by malware authors to obfuscate their malicious code, making it harder for security researchers and antivirus software to detect and analyze the malware. By using constant blinding techniques, the malware code can be concealed, increasing its chances of evading detection and maintaining persistence on the target system.

Here's how constant blinding can be utilized …

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 …

Hell's Gate Antivirus/EDR Evasion

The Hell's Gate technique refers to a specific method used by malware authors to make their software more difficult to detect and analyze. The technique involves the use of a custom native API resolver to resolve Windows API functions at runtime dynamically.

By using Hell's Gate, malware can avoid referencing the Windows API functions directly in the Import Address …

Shikata Ga Nai (SGN) Data Obfuscation

Shikata Ga Nai (SGN) is a data obfuscation technique that employs a polymorphic binary encoding scheme. It was initially developed by Ege Balci and gained popularity through its implementation in Metasploit Framework's msfvenom. SGN takes a binary input and generates a self-decoding obfuscated shellcode. The algorithm utilizes a XOR feedback loop for encoding and prefixes a decoding routine to the …

PyArmor Packers

Pyarmor is a command-line tool primarily used for the obfuscation of Python scripts. While its original design aims to protect Python code from unauthorized access and reverse engineering, its capabilities also make it a tool of interest for malware obfuscation. Pyarmor achieves this through several key features, each with potential applications in both legitimate protection and malicious exploitation:

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Thwarting Stack-Frame Analysis Anti-Disassembly

Thwarting Stack-Frame Analysis is a technique used by malware to make it more difficult for security analysts to reverse engineer and analyze the code. A stack frame is a collection of data associated with a function, including local variables, arguments passed to the function, and the return address. Disassemblers can use information from the stack frame to understand a function's …

ConfuserEx Packers

ConfuserEx is a open-source protector for .NET applications. It is the successor of Confuser project. It's primarily designed to make reverse engineering difficult for applications written in .NET languages like C# and VB.NET. ConfuserEx does this by using a variety of techniques like symbol renaming, control flow obfuscation, and encryption of strings and resources.

Supports .NET …

.Net Reactor Packers

.NET Reactor is used to prevent reverse engineering by adding different protection layers to .NET assemblies. Beside standard obfuscation techniques it includes special features like NecroBit, Virtualization, x86 Code Generation or Anti Tampering.

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