Spero analysis is a feature of Cisco AMP for Networks that examines structural characteristics such as metadata and header information in executable files. After generating a Spero signature based on this information, if the file is an eligible executable file, the device submits it to the Spero heuristic engine in the AMP cloud for analysis1. Spero analysis can detect malware based on the file’s structure and behavior, without requiring a full file upload2. Spero analysis is different from dynamic analysis, sandbox analysis, and malware analysis, which are other features of Cisco AMP for Networks that perform different types of file inspection and analysis3. References: 1: How to configure Firepower AMP to not upload files to … - Cisco Community 2: File Policies - Network Direction 3: Cisco AMP for Networks - Cisco
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