Find sigma rule 
Attack: Network Share Discovery
Adversaries may look for folders and drives shared on remote systems as a means of identifying sources of information to gather as a precursor for Collection and to identify potential systems of interest for Lateral Movement. Networks often contain shared network drives and folders that enable users to access file directories on various systems across a network.
File sharing over a Windows network occurs over the SMB protocol. (Citation: Wikipedia Shared Resource) (Citation: TechNet Shared Folder) Net can be used to query a remote system for available shared drives using the net view \\\\remotesystem command. It can also be used to query shared drives on the local system using net share. For macOS, the sharing -l command lists all shared points used for smb services.
MITRE
Tactic
- discovery
technique
- T1135
Test : Network Share Discovery via dir command
OS
- windows
Description:
Network Share Discovery utilizing the dir command prompt. The computer ip variable may need to be modified to point to a different host ip Upon execution avalaible network shares will be displayed in the commandline session
Executor
command_prompt