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Dump Credentials from Windows Credential Manager With PowerShell

Adversaries may search for common password storage locations to obtain user credentials. Passwords are stored in several places on a system, depending on the operating system or application holding the credentials.

MITRE ATT&CK

T1555

credential-access

Detection Query

selection_kiddie:
  ScriptBlockText|contains:
    - Get-PasswordVaultCredentials
    - Get-CredManCreds
selection_rename_Password:
  ScriptBlockText|contains|all:
    - New-Object
    - Windows.Security.Credentials.PasswordVault
selection_rename_credman:
  ScriptBlockText|contains|all:
    - New-Object
    - Microsoft.CSharp.CSharpCodeProvider
    - "[System.Runtime.InteropServices.RuntimeEnvironment]::GetRuntimeDirectory\
      ())"
    - Collections.ArrayList
    - System.CodeDom.Compiler.CompilerParameters
condition: 1 of selection_*

Author

frack113

Created

2021-12-20

Data Sources

windowsps_script

Platforms

windows

References

https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1555/T1555.md

Tags

attack.credential-accessattack.t1555

Raw Content

title: Dump Credentials from Windows Credential Manager With PowerShell
id: 99c49d9c-34ea-45f7-84a7-4751ae6b2cbc
status: test
description: |
    Adversaries may search for common password storage locations to obtain user credentials.
    Passwords are stored in several places on a system, depending on the operating system or application holding the credentials.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1555/T1555.md
author: frack113
date: 2021-12-20
modified: 2022-12-25
tags:
    - attack.credential-access
    - attack.t1555
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_kiddie:
        ScriptBlockText|contains:
            - 'Get-PasswordVaultCredentials'
            - 'Get-CredManCreds'
    selection_rename_Password:
        ScriptBlockText|contains|all:
            - 'New-Object'
            - 'Windows.Security.Credentials.PasswordVault'
    selection_rename_credman:
        ScriptBlockText|contains|all:
            - 'New-Object'
            - 'Microsoft.CSharp.CSharpCodeProvider'
            - '[System.Runtime.InteropServices.RuntimeEnvironment]::GetRuntimeDirectory())'
            - 'Collections.ArrayList'
            - 'System.CodeDom.Compiler.CompilerParameters'
    condition: 1 of selection_*
falsepositives:
    - Unknown
level: medium