Analysis of Latin American Bot (Vadokrist) : Part I - Mechanism & Dropper

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EXECUTIVE SUMMARY

        Vadokrist Trojan aims to steal credentials from victims’ machines and to create banking overlay windows when the victim visits their home banking portals. Here is the list of known Latin American banking Trojans

                 • Grandoreiro

                 • URSA

                 • Javali 

                 • Vadokrist (aka) Mispadu

DISTRIBUTION

        Vadokrist is propagated via social engineering schemas – namely, phishing/malscam campaigns

TECHNICAL ANALYSIS

           Abusing MSI (Windows Installer) was one of the growing threat in cyber industry. In this sample the msi file acts as a dropper for VadoKrist Trojan



 

       Here we can see the obfuscated JS code Binded into Windows Installer (MSI) which drop a zip file and extracts Vadokrist Trojan 




 Here is the Full obfuscated code of the dropper

   

 

           

              

           

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