sigmaDRL-1.1from SigmaHQ/sigma

Access to Browser Login Data

Adversaries may acquire credentials from web browsers by reading files specific to the target browser. Web browsers commonly save credentials such as website usernames and passwords so that they do not need to be entered manually in the future. Web browsers typically store the credentials in an encrypted format within a credential store.

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ATT&CK techniques

T1555.003

Rule sourcerules/windows/powershell/powershell_script/posh_ps_access_to_browser_login_data.yml

title: Access to Browser Login Data
id: fc028194-969d-4122-8abe-0470d5b8f12f
related:
    - id: 98f4c75c-3089-44f3-b733-b327b9cd9c9d
      type: obsolete
    - id: 47147b5b-9e17-4d76-b8d2-7bac24c5ce1b
      type: similar
status: test
description: |
    Adversaries may acquire credentials from web browsers by reading files specific to the target browser.
    Web browsers commonly save credentials such as website usernames and passwords so that they do not need to be entered manually in the future.
    Web browsers typically store the credentials in an encrypted format within a credential store.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1555.003/T1555.003.md
author: frack113
date: 2022-01-30
tags:
    - attack.credential-access
    - attack.t1555.003
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_cmd:
        ScriptBlockText|contains|all:
            - Copy-Item
            - '-Destination'
    selection_path:
        ScriptBlockText|contains:
            - '\Opera Software\Opera Stable\Login Data'
            - '\Mozilla\Firefox\Profiles'
            - '\Microsoft\Edge\User Data\Default'
            - '\Google\Chrome\User Data\Default\Login Data'
            - '\Google\Chrome\User Data\Default\Login Data For Account'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium