The final payload is a .NET DLL file designed to steal documents and images with the following extensions:  File extension  Description  TXT  Text file  PDF  PDF file  PNG  Image file in PNG format  JPG  Image file in JPG format  DOC  Word document  XLS  Excel document  XLM  Excel document with macros  ODP  OpenDocument Presentation  ODS  OpenDocument Sheet  ODT  OpenDocument Text  RTF  Rich Text Format file  PPT  PowerPoint document  XLSX  Excel document  XLSM  Excel document with macros  DOCX  Word document  PPTX  PowerPoint document  JPEG  Image file in JPEG format   