title: SAM Dump File Creation
id: 4e87b8e2-2ee9-4b2a-a715-4727d297ece0
description: Detects the creation of files that look like exports of the local SAM (Security Account Manager)
status: experimental
author: Florian Roth
references:
    - https://github.com/search?q=CVE-2021-36934
    - https://github.com/cube0x0/CVE-2021-36934
    - https://www.google.com/search?q=%22reg.exe+save%22+sam
    - https://github.com/HuskyHacks/ShadowSteal
    - https://github.com/FireFart/hivenightmare
date: 2022/02/11
tags:
    - attack.credential_access
    - attack.t1003.002
logsource:
    product: windows
    category: file_event
detection:
    selection:
        - TargetFilename|endswith: 
            - '\Temp\sam'
            - '\sam.sav'
            - '\Intel\sam'
            - '\sam.hive'
            - '\Perflogs\sam'
            - '\ProgramData\sam'
            - '\Users\Public\sam'
            - '\AppData\Local\sam'
            - '\AppData\Roaming\sam'
            - '_ShadowSteal.zip'       # https://github.com/HuskyHacks/ShadowSteal
            - '\Documents\SAM.export'  # https://github.com/n3tsurge/CVE-2021-36934/
        - TargetFilename: 'c:\sam'
        - TargetFilename|contains:
            - '\hive_sam_'             # https://github.com/FireFart/hivenightmare
            - '\sam.save'
            - '\sam.export'
            - '\~reg_sam.save'
            - '\sam_backup'
            - '\sam.bck'
            - '\sam.backup'
    condition: selection
falsepositives:
    - Rare cases of administrative activity
level: high