Sigma rule: Dump Credentials from Windows Credential Manager With PowerShell

Rule

Title

Dump Credentials from Windows Credential Manager With PowerShell

Status

test

Level

medium

Author

frack113

Date

2021-12-20

Modified

2022-12-25

File

rules/windows/powershell/powershell_script/posh_ps_dump_password_windows_credential_manager.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

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.

Log source

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_*

False positives (as the rule lists them)

• Unknown

Tags

• attack.credential-access
• attack.t1555

MITRE ATT&CK ids this rule names

• T1555

References

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

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/powershell/powershell_script/posh_ps_dump_password_windows_credential_manager.yml