T1081.md

T1081 - Credentials in Files

Description from ATT&CK

Adversaries may search local file systems and remote file shares for files containing passwords. These can be files created by users to store their own credentials, shared credential stores for a group of individuals, configuration files containing passwords for a system or service, or source code/binary files containing embedded passwords.

It is possible to extract passwords from backups or saved virtual machines through Credential Dumping. (Citation: CG 2014) Passwords may also be obtained from Group Policy Preferences stored on the Windows Domain Controller. (Citation: SRD GPP)

In cloud environments, authenticated user credentials are often stored in local configuration and credential files. In some cases, these files can be copied and reused on another machine or the contents can be read and then used to authenticate without needing to copy any files. (Citation: Specter Ops - Cloud Credential Storage)

Atomic Tests

• Atomic Test #1 - Extract Browser and System credentials with LaZagne

• Atomic Test #2 - Extract passwords with grep

• Atomic Test #3 - Runs Mimikatz & Mimikittenz by name

• Atomic Test #4 - Extracting passwords with findstr

• Atomic Test #5 - Access "unattend.xml"

Atomic Test #1 - Extract Browser and System credentials with LaZagne

LaZagne Source

Supported Platforms: macOS

Run it with sh!

python2 laZagne.py all

Atomic Test #2 - Extract passwords with grep

Extracting credentials from files

Supported Platforms: macOS, Linux

Inputs

Name	Description	Type	Default Value
file_path	Path to search	String	/

Run it with sh!

grep -ri password #{file_path}

Atomic Test #3 - Runs Mimikatz & Mimikittenz by name

Mimikatz/kittenz - This will require a Mimikatz executable or invoke-mimikittenz ps module.

Supported Platforms: Windows

Run it with powershell! Elevation Required (e.g. root or admin)

invoke-mimikittenz
mimikatz.exe

Atomic Test #4 - Extracting passwords with findstr

Extracting Credentials from Files

Supported Platforms: Windows

Run it with powershell!

findstr /si pass *.xml | *.doc | *.txt | *.xls
ls -R | select-string -Pattern password

Atomic Test #5 - Access "unattend.xml"

Attempts to access unattend.xml, where credentials are commonly stored, within the Panther directory where installation logs are stored.

Supported Platforms: Windows

Run it with command_prompt! Elevation Required (e.g. root or admin)

cmd /c type C:\Windows\Panther\unattend.xml > nul 2>&1
cmd /c type C:\Windows\Panther\Unattend\unattend.xml > nul 2>&1