Mimikatz DC Sync

calendar Oct 17, 2023 · attack.credential_access attack.s0002 attack.t1003.006  ·
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Detects Mimikatz DC sync security events

Sigma rule (View on GitHub)

 1title: Mimikatz DC Sync
 2id: 611eab06-a145-4dfa-a295-3ccc5c20f59a
 3status: test
 4description: Detects Mimikatz DC sync security events
 5references:
 6    - https://twitter.com/gentilkiwi/status/1003236624925413376
 7    - https://gist.github.com/gentilkiwi/dcc132457408cf11ad2061340dcb53c2
 8    - https://blog.blacklanternsecurity.com/p/detecting-dcsync?s=r
 9    - https://docs.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4662
10author: Benjamin Delpy, Florian Roth (Nextron Systems), Scott Dermott, Sorina Ionescu
11date: 2018/06/03
12modified: 2022/04/26
13tags:
14    - attack.credential_access
15    - attack.s0002
16    - attack.t1003.006
17logsource:
18    product: windows
19    service: security
20detection:
21    selection:
22        EventID: 4662
23        Properties|contains:
24            - 'Replicating Directory Changes All'
25            - '1131f6ad-9c07-11d1-f79f-00c04fc2dcd2'
26            - '1131f6aa-9c07-11d1-f79f-00c04fc2dcd2'
27            - '9923a32a-3607-11d2-b9be-0000f87a36b2'
28            - '89e95b76-444d-4c62-991a-0facbeda640c'
29        AccessMask: '0x100'
30    filter1:
31        SubjectDomainName: 'Window Manager'
32    filter2:
33        SubjectUserName|startswith:
34            - 'NT AUT'
35            - 'MSOL_'
36    filter3:
37        SubjectUserName|endswith: '$'
38    condition: selection and not 1 of filter*
39falsepositives:
40    - Valid DC Sync that is not covered by the filters; please report
41    - Local Domain Admin account used for Azure AD Connect
42level: high

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