# T1482 - Domain Trust Discovery

## Description from ATT&CK

> Adversaries may attempt to gather information on domain trust relationships that may be used to identify lateral movement opportunities in Windows multi-domain/forest environments. Domain trusts provide a mechanism for a domain to allow access to resources based on the authentication procedures of another domain.(Citation: Microsoft Trusts) Domain trusts allow the users of the trusted domain to access resources in the trusting domain. The information discovered may help the adversary conduct [SID-History Injection](https://attack.mitre.org/techniques/T1134/005), [Pass the Ticket](https://attack.mitre.org/techniques/T1550/003), and [Kerberoasting](https://attack.mitre.org/techniques/T1558/003).(Citation: AdSecurity Forging Trust Tickets)(Citation: Harmj0y Domain Trusts) Domain trusts can be enumerated using the `DSEnumerateDomainTrusts()` Win32 API call, .NET methods, and LDAP.(Citation: Harmj0y Domain Trusts) The Windows utility [Nltest](https://attack.mitre.org/software/S0359) is known to be used by adversaries to enumerate domain trusts.(Citation: Microsoft Operation Wilysupply)

[Source](https://attack.mitre.org/techniques/T1482)

## Atomic Tests

- [Atomic Test #1: Windows - Discover domain trusts with dsquery](#atomic-test-1-windows---discover-domain-trusts-with-dsquery)
- [Atomic Test #2: Windows - Discover domain trusts with nltest](#atomic-test-2-windows---discover-domain-trusts-with-nltest)
- [Atomic Test #3: Powershell enumerate domains and forests](#atomic-test-3-powershell-enumerate-domains-and-forests)
- [Atomic Test #4: Adfind - Enumerate Active Directory OUs](#atomic-test-4-adfind---enumerate-active-directory-ous)
- [Atomic Test #5: Adfind - Enumerate Active Directory Trusts](#atomic-test-5-adfind---enumerate-active-directory-trusts)
- [Atomic Test #6: Get-DomainTrust with PowerView](#atomic-test-6-get-domaintrust-with-powerview)
- [Atomic Test #7: Get-ForestTrust with PowerView](#atomic-test-7-get-foresttrust-with-powerview)
- [Atomic Test #8: TruffleSnout - Listing AD Infrastructure](#atomic-test-8-trufflesnout---listing-ad-infrastructure)

### Atomic Test #1: Windows - Discover domain trusts with dsquery

Uses the dsquery command to discover domain trusts.
Requires the installation of dsquery via Windows RSAT or the Windows Server AD DS role.

**Supported Platforms:** Windows

**auto_generated_guid:** `4700a710-c821-4e17-a3ec-9e4c81d6845f`

#### Attack Commands: Run with `command_prompt`!

```cmd
dsquery * -filter "(objectClass=trustedDomain)" -attr *
```

### Atomic Test #2: Windows - Discover domain trusts with nltest

Uses the nltest command to discover domain trusts.
Requires the installation of nltest via Windows RSAT or the Windows Server AD DS role.
This technique has been used by the Trickbot malware family.

**Supported Platforms:** Windows

**auto_generated_guid:** `2e22641d-0498-48d2-b9ff-c71e496ccdbe`

#### Attack Commands: Run with `command_prompt`!

```cmd
nltest /domain_trusts
nltest /trusted_domains
```


#### Dependencies: Run with `command_prompt`!

##### Description: nltest.exe from RSAT must be present on disk

###### Check Prereq Commands

```cmd
WHERE nltest.exe >NUL 2>&1
```

###### Get Prereq Commands

```cmd
echo Sorry RSAT must be installed manually
```

### Atomic Test #3: Powershell enumerate domains and forests

Use powershell to enumerate AD information.
Requires the installation of PowerShell AD admin cmdlets via Windows RSAT or the Windows Server AD DS role.

**Supported Platforms:** Windows

**auto_generated_guid:** `c58fbc62-8a62-489e-8f2d-3565d7d96f30`

#### Attack Commands: Run with `powershell`!

```powershell
Import-Module "PathToAtomicsFolder\..\ExternalPayloads\PowerView.ps1"
Get-NetDomainTrust
Get-NetForestTrust
Get-ADDomain
Get-ADGroupMember Administrators -Recursive
([System.DirectoryServices.ActiveDirectory.Domain]::GetCurrentDomain()).GetAllTrustRelationships()
```


#### Dependencies: Run with `powershell`!

##### Description: PowerView PowerShell script must exist on disk

###### Check Prereq Commands

```powershell
if (Test-Path "PathToAtomicsFolder\..\ExternalPayloads\PowerView.ps1") {exit 0} else {exit 1}
```

###### Get Prereq Commands

```powershell
New-Item -Type Directory "PathToAtomicsFolder\..\ExternalPayloads\" -ErrorAction Ignore -Force | Out-Null
Invoke-WebRequest "https://raw.githubusercontent.com/PowerShellMafia/PowerSploit/f94a5d298a1b4c5dfb1f30a246d9c73d13b22888/Recon/PowerView.ps1" -OutFile "PathToAtomicsFolder\..\ExternalPayloads\PowerView.ps1"
```

##### Description: RSAT PowerShell AD admin cmdlets must be installed

###### Check Prereq Commands

```powershell
if ((Get-Command "Get-ADDomain" -ErrorAction Ignore) -And (Get-Command "Get-ADGroupMember" -ErrorAction Ignore)) { exit 0 } else { exit 1 }
```

###### Get Prereq Commands

```powershell
Write-Host "Sorry RSAT must be installed manually"
```

### Atomic Test #4: Adfind - Enumerate Active Directory OUs

Adfind tool can be used for reconnaissance in an Active directory environment. This example has been documented by ransomware actors enumerating Active Directory OUs
reference- http://www.joeware.net/freetools/tools/adfind/, https://www.fireeye.com/blog/threat-research/2019/04/pick-six-intercepting-a-fin6-intrusion.html

**Supported Platforms:** Windows

**auto_generated_guid:** `d1c73b96-ab87-4031-bad8-0e1b3b8bf3ec`

#### Inputs

| Name | Description | Type | Default Value |
|------|-------------|------|---------------|
| optional_args | Allows defining arguments to add to the adfind command to tailor it to the specific needs of the environment. Use "-arg" notation to add arguments separated by spaces. | string | |

#### Attack Commands: Run with `command_prompt`!

```cmd
"PathToAtomicsFolder\..\ExternalPayloads\AdFind.exe" -f (objectcategory=organizationalUnit) #{optional_args}
```


#### Dependencies: Run with `powershell`!

##### Description: AdFind.exe must exist on disk at specified location (PathToAtomicsFolder\..\ExternalPayloads\AdFind.exe)

###### Check Prereq Commands

```powershell
if (Test-Path "PathToAtomicsFolder\..\ExternalPayloads\AdFind.exe") {exit 0} else {exit 1}
```

###### Get Prereq Commands

```powershell
New-Item -Type Directory (split-path "PathToAtomicsFolder\..\ExternalPayloads\AdFind.exe") -ErrorAction ignore | Out-Null
Invoke-WebRequest -Uri "https://github.com/redcanaryco/atomic-red-team/raw/master/atomics/T1087.002/bin/AdFind.exe" -OutFile "PathToAtomicsFolder\..\ExternalPayloads\AdFind.exe"
```

### Atomic Test #5: Adfind - Enumerate Active Directory Trusts

Adfind tool can be used for reconnaissance in an Active directory environment. This example has been documented by ransomware actors enumerating Active Directory Trusts
reference- http://www.joeware.net/freetools/tools/adfind/, https://www.fireeye.com/blog/threat-research/2019/04/pick-six-intercepting-a-fin6-intrusion.html

**Supported Platforms:** Windows

**auto_generated_guid:**