Cmstp Making Network Connection

calendar Oct 17, 2023 · attack.defense_evasion attack.t1218.003  ·
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Detects suspicious network connection by Cmstp

Sigma rule (View on GitHub)

 1title: Cmstp Making Network Connection
 2id: efafe0bf-4238-479e-af8f-797bd3490d2d
 3status: test
 4description: Detects suspicious network connection by Cmstp
 5references:
 6    - https://web.archive.org/web/20190720093911/http://www.endurant.io/cmstp/detecting-cmstp-enabled-code-execution-and-uac-bypass-with-sysmon/
 7author: Nasreddine Bencherchali (Nextron Systems)
 8date: 2022/08/30
 9tags:
10    - attack.defense_evasion
11    - attack.t1218.003
12logsource:
13    category: network_connection
14    product: windows
15detection:
16    selection:
17        Image|endswith: '\cmstp.exe'
18        Initiated: 'true'
19    condition: selection
20falsepositives:
21    - Unknown
22level: high

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