T1069.001 - Permission Groups Discovery: Local Groups

Description from ATT&CK

Adversaries may attempt to find local system groups and permission settings. The knowledge of local system permission groups can help adversaries determine which groups exist and which users belong to a particular group. Adversaries may use this information to determine which users have elevated permissions, such as the users found within the local administrators group. Commands such as net localgroup of the [Net](https://attack.mitre.org/software/S0039) utility, dscl . -list /Groups on macOS, and groups on Linux can list local groups.

Atomic Tests


Atomic Test #1 - Permission Groups Discovery (Local)

Permission Groups Discovery

Supported Platforms: Linux, macOS

auto_generated_guid: 952931a4-af0b-4335-bbbe-73c8c5b327ae

Attack Commands: Run with 
1

sh
!

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if [ -x "$(command -v dscacheutil)" ]; then dscacheutil -q group; else echo "dscacheutil is missing from the machine. skipping..."; fi;
if [ -x "$(command -v dscl)" ]; then dscl . -list /Groups; else echo "dscl is missing from the machine. skipping..."; fi;
if [ -x "$(command -v groups)" ]; then groups; else echo "groups is missing from the machine. skipping..."; fi;
if [ -x "$(command -v id)" ]; then id; else echo "id is missing from the machine. skipping..."; fi;
if [ -x "$(command -v getent)" ]; then getent group; else echo "getent is missing from the machine. skipping..."; fi;
cat /etc/group



Atomic Test #2 - Basic Permission Groups Discovery Windows (Local)

Basic Permission Groups Discovery for Windows. This test will display some errors if run on a computer not connected to a domain. Upon execution, domain information will be displayed.

Supported Platforms: Windows

auto_generated_guid: 1f454dd6-e134-44df-bebb-67de70fb6cd8

Attack Commands: Run with 
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command_prompt
!

net localgroup
net localgroup "Administrators"



Atomic Test #3 - Permission Groups Discovery PowerShell (Local)

Permission Groups Discovery utilizing PowerShell. This test will display some errors if run on a computer not connected to a domain. Upon execution, domain information will be displayed.

Supported Platforms: Windows

auto_generated_guid: a580462d-2c19-4bc7-8b9a-57a41b7d3ba4

Attack Commands: Run with 
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powershell
!

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get-localgroup
Get-LocalGroupMember -Name "Administrators"



Atomic Test #4 - SharpHound3 - LocalAdmin

This module runs the Windows executable of SharpHound in order to remotely list members of the local Administrators group (SAMR)

Supported Platforms: Windows

auto_generated_guid: e03ada14-0980-4107-aff1-7783b2b59bb1

Inputs:

| Name | Description | Type | Default Value | |——|————-|——|—————| | domain | FQDN of the targeted domain | string | $env:UserDnsDomain| | sharphound_path | SharpHound Windows executable | path | PathToAtomicsFolder\..\ExternalPayloads\SharpHound.exe| | output_path | Output for SharpHound | path | $env:TEMP\SharpHound\|

Attack Commands: Run with 
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powershell
!

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New-Item -Path "#{output_path}" -ItemType Directory > $null
& "#{sharphound_path}" -d "#{domain}" --CollectionMethod LocalAdmin --NoSaveCache --OutputDirectory "#{output_path}"

Cleanup Commands:

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Remove-Item -Recurse #{output_path} -ErrorAction Ignore

Dependencies: Run with 
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powershell
!

Description: SharpHound binary must exist on disk and at specified location (#{sharphound_path}).

And the computer must be domain joined (implicit authentication).

Check Prereq Commands:
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if (Test-Path "#{sharphound_path}") { exit 0 } else { exit 1 }
Get Prereq Commands:
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New-Item -Type Directory "PathToAtomicsFolder\..\ExternalPayloads\" -ErrorAction Ignore -Force | Out-Null
Invoke-WebRequest "https://github.com/BloodHoundAD/BloodHound/blob/e062fe73d73c015dccb37fae5089342d009b84b8/Collectors/SharpHound.exe?raw=true" -OutFile "#{sharphound_path}"



Atomic Test #5 - Wmic Group Discovery

Utilizing wmic.exe to enumerate groups on the local system. Upon execution, information will be displayed of local groups on system.

Supported Platforms: Windows

auto_generated_guid: 7413be50-be8e-430f-ad4d-07bf197884b2

Attack Commands: Run with 
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command_prompt
!

wmic group get name



Atomic Test #6 - WMIObject Group Discovery

Utilizing PowerShell cmdlet - get-wmiobject, to enumerate local groups on the endpoint. Upon execution, Upon execution, information will be displayed of local groups on system.

Supported Platforms: Windows

auto_generated_guid: 69119e58-96db-4110-ad27-954e48f3bb13

Attack Commands: Run with 
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powershell
!

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Get-WMIObject Win32_Group



Atomic Test #7 - Permission Groups Discovery for Containers- Local Groups

Attackers may try to obtain a list of services that are operating on remote hosts and local network infrastructure devices, in order to identify potential vulnerabilities that can be exploited through remote software attacks. They typically use tools to conduct port and vulnerability scans in order to obtain this information.

Supported Platforms: Containers

auto_generated_guid: 007d7aa4-8c4d-4f55-ba6a-7c965d51219c

Attack Commands: Run with 
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sh
!

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docker build -t t1069 $PathtoAtomicsFolder/T1069.001/src/
docker run --name t1069_container  -d -t t1069
docker exec t1069_container ./test.sh

Cleanup Commands:

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docker stop t1069_container
docker rmi -f t1069

Dependencies: Run with 
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sh
!

Description: Verify docker is installed.
Check Prereq Commands:
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which docker
Get Prereq Commands:
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if [ "" == "`which docker`" ]; then echo "Docker Not Found"; if [ -n "`which apt-get`" ]; then sudo apt-get -y install docker ; elif [ -n "`which yum`" ]; then sudo yum -y install docker ; fi ; else echo "Docker installed"; fi
Description: Verify docker service is running.
Check Prereq Commands:
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sudo systemctl status docker  --no-pager
Get Prereq Commands:
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sudo systemctl start docker