C ++ Hook kernel32.dll OpenProcess 与弯路

Question

我正在尝试从 Kernel32.dll 中挂钩 OpenProcess，以防止所谓的“injector”程序注入其他 dll进入我的流程：

// -------------------------------------------------------------------
HANDLE WINAPI myOpenProcess(DWORD dwDesiredAccess, BOOL  bInheritHandle, DWORD dwProcessId)
{
    //

    if (dwDesiredAccess == PROCESS_ALL_ACCESS || dwDesiredAccess == PROCESS_VM_OPERATION ||
        dwDesiredAccess == PROCESS_VM_READ || dwDesiredAccess == PROCESS_VM_WRITE)
    {
        printf("Blcoked Process ID : %d , DesiredAccess : %d ", dwProcessId, dwDesiredAccess);

        return false;
    }

    //

    return dOpenProcess(dwDesiredAccess, bInheritHandle, dwProcessId);
}

如果有人打开“injecting”的过程，我需要添加什么才能“检测”？ 我不想“预防”，我想“检测”注射并决定做什么。

Answer 1

该图描述了注入器通常将 dll 注入另一个进程的步骤。你的程序应该做行为分析来决定它是否注入。您需要挂钩其他 api，例如 VirtualAlloc \ WriteProcessMemory、CreateRemoteThread 等。

下面显示了分析喷油器流量和 在需要时阻止执行。喷油器使用多种技术 注入 dll，以下内容不足以满足所有方法。

//
//HookOpenProcess keep track of opened process handle
//
HANDLE process = OpenProcess(PROCESS_ALL_ACCESS, FALSE, procID);

/*
HookVirtualAlloc  Check whether the first param is openprocess handle :: Make the suspicion level 3
*/
LPVOID arg = (LPVOID)VirtualAllocEx(process, NULL, ...);

/*
HookWriteProcessMemory  Check whether the first param is openprocess handle :: Make the suspicion level 2
*/
int n = WriteProcessMemory(process, .....);

/*
HookCreateRemoteThread Check whether the first param is openprocess handle :: Make the suspicion level 1 and block it from execution
*/
HANDLE threadID = CreateRemoteThread(process, .........);