High Risk User Downloads Executable from Excel Macro
This rule detects when a user, identified as having a high-risk relationship with GCP resources (specifically those containing sensitive data like US Social Security Numbers via GCP DLP context), downloads an executable file. The detection correlates network proxy events showing executable downloads or large file transfers with EDR events indicating Microsoft Excel activity on the same host and by the same user within a 5-minute window. This scenario is indicative of a potential malicious macro in an Excel document downloading and executing malware.
YARA-L
