Nasreddine Bencherchali
30 lines
1013 B
YAML
30 lines
1013 B
YAML
title: Password Spraying via Explicit Credentials
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id: 196a29c2-e378-48d8-ba07-8a9e61f7fab9
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status: unsupported
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description: Detects a single user failing to authenticate to multiple users using explicit credentials.
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references:
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- https://docs.splunk.com/Documentation/ESSOC/3.22.0/stories/UseCase#Active_directory_password_spraying
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author: Mauricio Velazco, Zach Mathis
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date: 2021/06/01
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modified: 2023/02/24
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tags:
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- attack.t1110.003
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- attack.initial_access
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- attack.privilege_escalation
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logsource:
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product: windows
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service: security
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detection:
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selection:
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EventID: 4648
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filter:
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SubjectUserName|endswith: '$' # There will be much noise from computer accounts to UMFD-0, DWM-1, etc...
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timeframe: 1h
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condition: selection and not filter | count(TargetUserName) by SubjectUserName > 10
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falsepositives:
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- Terminal servers
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- Jump servers
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- Other multiuser systems like Citrix server farms
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- Workstations with frequently changing users
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level: medium
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