UNDERSTANDING ANTIVIRUS MECHANICS AND EVASION TECHNIQUES FOR RED TEAM OPERATIONS

Chuane

 


    Hello guys, on this blog, we will tackle about how we can bypass antivirus and employ our red team operations, doing so we must first understand how our antivirus works so we can create effective programs.

Antivirus software helps protect a computer system from computer malware. Viruses, worms or trojan horses can be used by criminals or hackers. They can steal information or damage system files. If no antivirus software is installed, hackers will be able to access the information in the computer.  To start, we must identify the types of detection of an antivirus.

TYPES OF DETECTION

  • Static Detection: Analyzes file signatures and metadata to identify known malware.
  • Dynamic Detection: Executes files in a controlled environment (emulator) to observe their behavior and detect malicious activity.
  • Heuristic Detection: Analyzes file code and behavior patterns to identify potential threats based on predefined rules. 

MALWARE DETECTION PROCESS

Any file type, including PDFs, EXEs, and XLS files, can be malicious. Antivirus (AV) programs scan files and compare them to a database of known malware signatures or analyze their behavior to identify threats.

KEY COMPONENTS OF AN AV PROGRAM

  • Scanner: Scans files and systems for potential threats.
  • Detection Techniques:
    • Signature-based detection: Compares file signatures to a known malware database.
    • Dynamic detection: Executes files in a controlled environment to observe their behavior.
    • Heuristic detection: Analyzes file behavior to identify suspicious activity.
  • Compression and Unpacking Tools: Handles compressed and packed files to enable thorough analysis.
  • Emulators: Simulate hardware and software environments to execute files safely.

So, we have now basically understood how an antivirus works. We can now create a program to bypass its mechanisms; however, I will not get into details on creating the program, but we can use this tool as an example proving that we can easily bypass an antivirus.

Link: Nuno Converter

Disclaimer: I have no control over your actions based on this knowledge; it is solely for educational purposes.

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