Gandcrab via fake invoice using password protected zip files

It’s Friday afternoon at the end of a busy week for many people and we get yet another Gandcrab ransomware campaign. This campaign is slightly different to previous versions that I have seen. We generally see Gandcrab delivered via Office ( normally Word)  documents, either Macros or possibly Equation editor or other embedded ole object exploits. Today’s version is the first time that I have seen a js file inside a zip that was password protected as the initial vector. You need the password “invoice123” to be able to open the zip file. It starts with the email looking like Continue reading →