The key differences in this variant:  Two CAB files are encoded into the Word document in text boxes instead of being appended in the DOC file There is one CAB file for an x86 system and another for an x64 system This malware sample uses uacme.exe with dummy.dll to implement the UAC bypass  exe is the program vulnerable to the UAC bypass attack dll runs install.bat to set up the service (same as NTWDBLIB.dll)   exe and dummy.dll may be either 64-bit or 32-bit binaries based on the OS