Access To ADMIN$ Network Share

 1title: Access To ADMIN$ Network Share
 2id: 098d7118-55bc-4912-a836-dc6483a8d150
 3status: test
 4description: Detects access to ADMIN$ network share
 5references:
 6    - https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/event-5140
 7author: Florian Roth (Nextron Systems)
 8date: 2017-03-04
 9modified: 2024-01-16
10tags:
11    - attack.lateral-movement
12    - attack.t1021.002
13logsource:
14    product: windows
15    service: security
16    definition: 'Requirements: The advanced audit policy setting "Object Access > Audit File Share" must be configured for Success/Failure'
17detection:
18    selection:
19        EventID: 5140
20        ShareName: 'Admin$'
21    filter_main_computer_account:
22        SubjectUserName|endswith: '$'
23    condition: selection and not 1 of filter_*
24falsepositives:
25    - Legitimate administrative activity
26level: low