Suspicious Dump Credentials from Windows Credential Manager With PowerShell (via ps_script)

title: Suspicious Dump Credentials from Windows Credential Manager With PowerShell (via ps_script)
id: 9b4496a1-71a4-5b4e-95b3-3dd97c594b45
status: stable
description: This rule detects threat actors 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://attack.mitre.org/techniques/T1555/
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1555/T1555.md
author: Huntrule Team
date: 2026-06-01
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