T1077.md

T1077 - Windows Admin Shares

Description from ATT&CK

Windows systems have hidden network shares that are accessible only to administrators and provide the ability for remote file copy and other administrative functions. Example network shares include C$, ADMIN$, and IPC$.

Adversaries may use this technique in conjunction with administrator-level Valid Accounts to remotely access a networked system over server message block (SMB) (Citation: Wikipedia SMB) to interact with systems using remote procedure calls (RPCs), (Citation: TechNet RPC) transfer files, and run transferred binaries through remote Execution. Example execution techniques that rely on authenticated sessions over SMB/RPC are Scheduled Task, Service Execution, and Windows Management Instrumentation. Adversaries can also use NTLM hashes to access administrator shares on systems with Pass the Hash and certain configuration and patch levels. (Citation: Microsoft Admin Shares)

The Net utility can be used to connect to Windows admin shares on remote systems using net use commands with valid credentials. (Citation: Technet Net Use)

Atomic Tests

• Atomic Test #1 - Map admin share

• Atomic Test #2 - Map Admin Share PowerShell

Atomic Test #1 - Map admin share

Connecting To Remote Shares

Supported Platforms: Windows

Inputs

Name	Description	Type	Default Value
share_name	Examples C$, IPC$, Admin$	String	C$
user_name	Username	String	DOMAIN\Administrator
password	Password	String	P@ssw0rd1
computer_name	Target Computer Name	String	Target

Run it with command_prompt!

cmd.exe /c "net use \\#{computer_name}\#{share_name} #{password} /u:#{user_name}"

Atomic Test #2 - Map Admin Share PowerShell

Map Admin share utilizing PowerShell

Supported Platforms: Windows

Inputs

Name	Description	Type	Default Value
share_name	Examples C$, IPC$, Admin$	String	C$
computer_name	Target Computer Name	String	Target
map_name	Mapped Drive Letter	String	g

Run it with powershell!

New-PSDrive -name #{map_name} -psprovider filesystem -root \\#{computer_name}\#{share_name}