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Date: Mon, 6 Jun 2022 22:09:18 -0400
From: malvuln <>
Subject: [FD] Ransom.Haron / Code Execution

Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source:

Threat: Ransom.Haron
Vulnerability: Code Execution
Description: Haron 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 pre-encryption. The exploit dll will
check if the current directory is "C:\Windows\System32", if not we grab our
process ID and terminate. We do not need to rely on hash signature or
third-party product, the malwares own flaw will do the work for us.
Endpoint protection systems and or antivirus can potentially be killed
prior to executing malware, but this method cannot as theres nothing to
kill the DLL just lives on disk waiting. From defensive perspective you can
add the DLLs to a specific network share containing important data as a
layered approach. All basic tests were conducted successfully in a virtual
machine environment.
Family: Haron
Type: PE32
MD5: dedad693898bba0e4964e6c9a749d380
Vuln ID: MVID-2022-0609
Disclosure: 06/06/2022

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

#include "windows.h"

//By malvuln
//Purpose: Exploit Haron
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

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

BOOL APIENTRY DllMain(HINSTANCE hInst, DWORD reason, LPVOID reserved){
  switch (reason) {
   MessageBox(NULL, "Haron\nPWNED By MALVULN", "Code Exec PoC", MB_OK);
   GetCurrentDirectory(MAX_PATH, TEXT(buf));
   int rc = strcmp("C:\\Windows\\System32", TEXT(buf));
    if(rc != 0){
    HANDLE handle = OpenProcess(PROCESS_TERMINATE, FALSE, getpid());
     if (NULL != handle) {
        TerminateProcess(handle, 0);
  return TRUE;

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