JS-FLASHJS Flash

JS Flash capabilities closely resemble those of VB Flash and leverage interesting techniques in deployment via batch scripts embedded as OLE objects in malicious documents. Many iterations of JS Flash were observed being tested before deployment, containing minor changes to obfuscation and more complex additions, such as the ability to download TinyMet (a cutdown of the Metasploit Meterpreter payload). PowerShell was also used heavily for the execution of commands and arbitrary script execution. No JS Flash samples were observed being deployed after November 2017.