sigmahighHunting

Potential SAM Database Dump

Detects the creation of files that look like exports of the local SAM (Security Account Manager)

MITRE ATT&CK

credential-access

Detection Query

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
      - \Documents\SAM.export
      - :\sam
  - TargetFilename|contains:
      - \hive_sam_
      - \sam.save
      - \sam.export
      - \~reg_sam.save
      - \sam_backup
      - \sam.bck
      - \sam.backup
condition: selection

Author

Florian Roth (Nextron Systems)

Created

2022-02-11

Data Sources

windowsFile Events

Platforms

windows

References

Tags

attack.credential-accessattack.t1003.002

Raw Content

title: Potential SAM Database Dump
id: 4e87b8e2-2ee9-4b2a-a715-4727d297ece0
status: test
description: Detects the creation of files that look like exports of the local SAM (Security Account Manager)
references:
    - https://github.com/search?q=CVE-2021-36934
    - https://web.archive.org/web/20210725081645/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
author: Florian Roth (Nextron Systems)
date: 2022-02-11
modified: 2023-01-05
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/
              - ':\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