Bypassing EDR: A Modern Approach to Unhooking

  <p>Endpoint Detection and Response (EDR) systems rely heavily on user-mode API hooking to monitor process behavior. This research explores techniques to restore the original system calls, effectively blinding the EDR.</p>
  <h3>Key Techniques</h3>
  <ul>
    <li>Direct System Calls (Syscalls)</li>
    <li>Unmapping and Reloading NTDLL</li>
    <li>Hardware Breakpoint Evasion</li>
  </ul>
  <p>By using direct syscalls, we bypass the hooked functions entirely. However, modern EDRs are inspecting the call stack. To counter this, we implement call stack spoofing to hide the origin of the syscall, making our execution appear legitimate.</p>