Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source: https://malvuln.com/advisory/71a76adeadc7b51218d265771fc2b0d1.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Trojan.Win32.Platinum.gen
Vulnerability: Arbitrary Code Execution
Description: The malware looks for and executes DLLs in its current directory. Therefore, we can potentially hijack a vuln DLL execute our own code, control and terminate the malware. Once loaded the exploit dll will check if the current directory is "C:\Windows\System32", if not we grab our process ID and terminate. All basic tests were conducted successfully in a virtual machine environment.
Family: PlatinumGroup
Type: PE32
MD5: 71a76adeadc7b51218d265771fc2b0d1
Vuln ID: MVID-2022-0657
Dropped files: Adobe_Update_Sync.exe
Disclosure: 11/18/2022 


Exploit/PoC:
1) Compile the following C code as "WTSAPI32.dll"
2) Place the DLL in same directory as the malware
3) Optional - Hide it: attrib +s +h "WTSAPI32.dll"
4) Run the malware

#include "windows.h"

//By malvuln - November 2022
//Purpose: PWN Platinum Group malware strain MD5: 71a76adeadc7b51218d265771fc2b0d1

//gcc -c WTSAPI32.c -m32
//gcc -shared -o WTSAPI32.dll WTSAPI32.o -m32

/** DISCLAIMER:
Author is NOT responsible for any damages whatsoever by using this software or improper malware
handling. By using this code you assume and accept all risk implied or otherwise.
**/

BOOL APIENTRY DllMain(HINSTANCE hInst, DWORD reason, LPVOID reserved){
  switch (reason) {
  case DLL_PROCESS_ATTACH:
   MessageBox(NULL, "Platinum Group\nPWNED!!! by Malvuln", "Code Exec PoC", MB_OK);
   TCHAR buf[MAX_PATH];
   if(GetCurrentDirectory(MAX_PATH, buf))
   if(strcmp("C:\\Windows\\System32", buf) != 0){
      HANDLE handle = OpenProcess(PROCESS_TERMINATE, FALSE, getpid());
     if (NULL != handle) {   
        TerminateProcess(handle, 0);
       CloseHandle(handle);
     }
   }
    break;
  }
  return TRUE;
}


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