Discovery / credits: Malvuln - (c) 2022  
Original source:  
Threat: LokiLocker Ransom  
Vulnerability: Code Execution  
Description: LokiLocker 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 malware 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: LokiLocker  
Type: PE32  
MD5: 2ffc2446a2a6cf04c06a85deb43b9fb8  
Vuln ID: MVID-2022-0575  
Disclosure: 05/03/2022  
Video PoC URL:  
1) Compile the following C code as "netapi32.dll"  
2) Place the DLL in same directory as the ransomware  
3) Optional - Hide it: attrib +s +h "netapi32.dll"  
4) Run the malware  
#include "windows.h"  
#include "stdio.h"  
//By malvuln  
//Purpose: Code Execution  
//Target: LokiLocker Ransomware  
//MD5: 2ffc2446a2a6cf04c06a85deb43b9fb8  
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.  
//gcc -c netapi32.c -m32  
//gcc -shared -o netapi32.dll netapi32.o -m32  
BOOL APIENTRY DllMain(HINSTANCE hInst, DWORD reason, LPVOID reserved){  
switch (reason) {  
MessageBox(NULL, "Code Exec", "by malvuln", 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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