This rule detects instances where archive files, which can be indicative of malicious activity, are downloaded via HTTP GET requests to proxy servers. Threat actors commonly use archive formats to deliver additional payloads or scripts after compromising a host. The detection logic specifically looks for successful GET requests that end with various known archive file extensions, including but not limited to .zip, .rar, .tar, and many others. The rule excludes downloads from certain domains, such as Windows Update, to reduce false positives from benign activity. It utilizes regex patterns to match the URLs of the request against a comprehensive list of archive file types and logs relevant details for further analysis.