t1039-data-from-network-shared-drive

name	T1039_data-from-network-shared-drive
description	Adversaries may search network shares on computers they have compromised to find files of interest.
category	information-gathering
version	18.1
author	cyberstrike-official
tags	["mitre-attack","enterprise","t1039","collection","linux","macos","windows"]
technique_id	T1039
tactic	collection
all_tactics	["collection"]
platforms	["Linux","macOS","Windows"]
mitre_url	https://attack.mitre.org/techniques/T1039
tech_stack	["linux","macos","windows"]
cwe_ids	["CWE-200"]
chains_with	[]
prerequisites	[]
severity_boost	{}

T1039 Data from Network Shared Drive

High-Level Description

Adversaries may search network shares on computers they have compromised to find files of interest. Sensitive data can be collected from remote systems via shared network drives (host shared directory, network file server, etc.) that are accessible from the current system prior to Exfiltration. Interactive command shells may be in use, and common functionality within cmd may be used to gather information.

Kill Chain Phase

• Collection (TA0009)

Platforms: Linux, macOS, Windows

What to Check

• Identify if Data from Network Shared Drive technique is applicable to target environment
• Check Linux systems for indicators of Data from Network Shared Drive
• Check macOS systems for indicators of Data from Network Shared Drive
• Check Windows systems for indicators of Data from Network Shared Drive
• Assess detection coverage (1 detection strategies)

How to Test

Atomic Red Team Tests

The following tests are from Atomic Red Team and provide actionable ways to test this technique:

Atomic Test 1: Copy a sensitive File over Administrative share with copy

Copy from sensitive File from the c$ of another LAN computer with copy cmd https://twitter.com/SBousseaden/status/1211636381086339073

Supported Platforms: windows Elevation Required: Yes

copy \\#{remote}\C$\#{share_file} %TEMP%\#{local_file}

Dependencies:

• Administrative share must exist on #{remote}
• "\#{remote}\C$#{share_file}" must exist on #{remote}

Atomic Test 2: Copy a sensitive File over Administrative share with Powershell

Copy from sensitive File from the c$ of another LAN computer with powershell https://twitter.com/SBousseaden/status/1211636381086339073

Supported Platforms: windows Elevation Required: Yes

copy-item -Path "\\#{remote}\C$\#{share_file}" -Destination "$Env:TEMP\#{local_file}"