Malicious Office Document with Macro Opened

Darshan Thummar@Mighty

•updated Jun 11, 2026•0•0•1

This rule detects the opening of a potentially malicious Office document containing macros. It specifically looks for HTTP traffic where the response body contains both "[Content_Types].xml" and "vbaProject", which are indicators of an Office document (like .docx, .xlsx, .pptx) that includes VBA macros. The 'flow:to_client,established' indicates that the document is being downloaded by a client over an established HTTP connection.