Olivia, an expert hacker, sets her sights on an organization and disseminates Emotet malware through a malicious script. Once the victim's device is infected, Olivia leverages Emotet to propagate the infection across local networks and beyond, intending to compromise as many machines as possible. During this operation, she utilizes a tool, specifically a self-extracting RAR file, to gather information related to network resources, including writable share drives. What is the tool employed by Olivia in the above scenario?