Créer un malware INDETECTABLE

Summary

This video tutorial demonstrates an advanced method for bypassing Windows Defender using Metasploit. The presenter walks through creating a custom payload with msfvenom, obfuscating shellcode, and employing process hollowing techniques to inject the payload into a signed system process. Despite active antivirus protection, the approach allows successful execution of the payload and modules like Mimikatz to extract sensitive information. The video emphasizes the power of memory injection and fileless attacks, offering a deeper look at offensive security methods for penetration testing in real-world environments.

Takeaways

• 😀 The video demonstrates advanced techniques for bypassing Windows Defender using Metasploit and shellcode injection.
• 😀 The method used in the video is called 'process hollowing,' which involves injecting shellcode into an existing process to evade detection.
• 😀 The tutorial uses Metasploit's MSFVenom to generate a shellcode payload, which is then encoded and obfuscated to avoid signature-based antivirus detection.
• 😀 A key focus is on bypassing antivirus protection by ensuring that malicious code is only executed in memory, leaving no trace on disk.
• 😀 The video emphasizes the importance of 'offensive security' techniques, showing how professionals use advanced methods to bypass security tools.
• 😀 A common tool demonstrated in the video is the 'svchost.exe' binary, which is used to run the malicious code in a suspended state to avoid detection.
• 😀 The 'Process Hollowing' technique involves suspending a process, injecting malicious code, and then resuming the process to execute the shellcode.
• 😀 A unique aspect of this tutorial is the use of obfuscation techniques, such as XOR encryption, to further disguise the malicious payload from antivirus scanners.
• 😀 Once the code is injected and executed, the attacker can use additional tools, like Mimikatz, to harvest credentials and escalate privileges on the compromised system.
• 😀 The video also shows how to use Metasploit's multi-handler to establish a reverse shell, allowing the attacker to control the target machine remotely.
• 😀 The final message of the video stresses the growing sophistication of cyber-attacks, warning viewers of the effectiveness of modern techniques against security systems like Windows Defender.

Q & A

What is the main objective of the video?

The main objective of the video is to demonstrate how to bypass Windows Defender using advanced techniques such as process hollowing and shellcode injection, allowing attackers to execute payloads undetected by the antivirus.

What tool is used to generate the payload in the video?

The payload is generated using Metasploit's msfvenom tool. It is used to create a reverse shell TCP payload for further obfuscation and injection.

What is the significance of the process hollowing technique?

Process hollowing is a technique where a legitimate process (such as svchost.exe) is suspended, and malicious code is injected into its memory. This allows the malicious code to execute while avoiding detection by antivirus software.

Why does Windows Defender fail to detect the shellcode?

Windows Defender fails to detect the shellcode because the shellcode is encoded using XOR encryption. This prevents signature-based detection methods from identifying the payload during static analysis.

What role does Visual Studio play in the process?

Visual Studio is used to open and edit the shellcode, compile the project, and generate an executable file (binary) for the payload. The shellcode is injected into the executable as part of the obfuscation process.

What is the purpose of the 'process hollowing' script provided in the video?

The 'process hollowing' script is used to inject the encoded shellcode into a legitimate process (svchost.exe) that is suspended. Once injected, the process is resumed, and the shellcode executes, bypassing antivirus defenses.

How does the attacker execute the payload once it has been injected?

Once the payload is injected, the attacker can execute it remotely using Metasploit's multi-handler to catch the reverse shell connection and gain control over the target machine.

What additional modules can be used after successfully bypassing Windows Defender?

After bypassing Windows Defender, the attacker can use modules like Incognito (for impersonating user tokens), Kiwi (for dumping credentials), and other Metasploit modules to escalate privileges and gather sensitive data.

What is a major advantage of this attack method compared to simpler attacks like reverse shell UDP?

The major advantage of this attack method is that it is far more sophisticated. It avoids detection by employing shellcode obfuscation, process hollowing, and the ability to load additional modules in memory, providing a stealthier and more powerful approach.

What is meant by the term 'attack file-less' in the context of this video?

An 'attack file-less' means that no files are written to disk on the compromised machine. All malicious code is injected directly into the memory of legitimate processes, leaving no trace in the file system and making it harder for antivirus software to detect.