Here are the steps to follow in order to create a malicious CHM file. As used by APT37
- Download the HTML Help Workshop (Htmlhelp.exe) from MSDN. If the link is dead you can use the archive version here
- Once installed you should have a folder
C:\Program Files (x86)\HTML Help Workshopand inside theMicrosoft HTML Help Compiler (hhc.exe) - We need to create 3 files:
- Project File
.hpp - HTML File
.htm
- Project File
- Table of Contents File
.hhc