LazyHook is a stealthy API hooking framework that bypasses Host Intrusion Prevention Systems (HIPS) through call stack spoofing. By leveraging CPU-level hardware breakpoints and Vectored Exception Handling, it executes arbitrary code as if it originated from trusted, Microsoft-signed modules—completely fooling behavioral analysis engines that rely on call stack inspection and module origin verification.

Evade behavioral analysis by executing malicious code within trusted Microsoft call stacks
Uses hardware breakpoints + VEH to hijack legitimate functions and spoof module origins

│ 1. Target Function Call
│ ↓
│ 2. CPU Debug Register Triggers (DR0-DR3) │
│ ↓
│ 3. EXCEPTION_SINGLE_STEP Raised │
│ ↓
│ 4. VEH Handler Intercepts Exception │
│ ↓
│ 5. Execution Redirected to Hook Function │
│ ↓
│ 6. CallOriginal() Temporarily Disables Breakpoint
│ ↓
│ 7. Original Function Executes │
│ ↓
│ 8. Breakpoint Re-enabled

#callstackspoofing #edr