Home / exploits BlackBasta Ransom Code Execution
Posted on 03 May 2022
BlackBasta looks for and loads a DLL named wow64log.dll in WindowsSystem32. Therefore, we can drop our own DLL to intercept and terminate the malware pre-encryption. The exploit DLL will simply display a Win32API message box and call exit(). Our BlackBasta exploit DLL must export the InterlockedExchange function or it fails with error. We do not need to rely on a 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 there is nothing to kill the DLL that just lives on disk waiting. From a 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.
