Operation Wocao Activity - Security

Detects activity mentioned in Operation Wocao report

Sigma rule (View on GitHub)

 1title: Operation Wocao Activity - Security
 2id: 74ad4314-482e-4c3e-b237-3f7ed3b9ca8d
 3status: test
 4description: Detects activity mentioned in Operation Wocao report
 5references:
 6    - https://web.archive.org/web/20200226212615/https://www.fox-it.com/en/news/whitepapers/operation-wocao-shining-a-light-on-one-of-chinas-hidden-hacking-groups/
 7    - https://web.archive.org/web/20200226212615/https://resources.fox-it.com/rs/170-CAK-271/images/201912_Report_Operation_Wocao.pdf
 8    - https://twitter.com/SBousseaden/status/1207671369963646976
 9author: Florian Roth (Nextron Systems), frack113
10date: 2019-12-20
11modified: 2022-11-27
12tags:
13    - attack.discovery
14    - attack.t1012
15    - attack.defense-evasion
16    - attack.t1036.004
17    - attack.t1027
18    - attack.execution
19    - attack.t1053.005
20    - attack.t1059.001
21    - detection.emerging-threats
22logsource:
23    product: windows
24    service: security
25detection:
26    selection:
27        EventID: 4799
28        TargetUserName|startswith: 'Administr'
29        CallerProcessName|endswith: '\checkadmin.exe'
30    condition: selection
31falsepositives:
32    - Administrators that use checkadmin.exe tool to enumerate local administrators
33level: high

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