Nasreddine Bencherchali
32 lines
1.0 KiB
YAML
32 lines
1.0 KiB
YAML
title: Multiple Users Failing to Authenticate from Single Process
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id: fe563ab6-ded4-4916-b49f-a3a8445fe280
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status: unsupported
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description: Detects failed logins with multiple accounts from a single process on the system.
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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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- https://www.trimarcsecurity.com/single-post/2018/05/06/trimarc-research-detecting-password-spraying-with-security-event-auditing
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author: Mauricio Velazco
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date: 2021/06/01
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modified: 2023/03/13
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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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selection1:
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EventID: 4625
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LogonType: 2
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filter:
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ProcessName: '-'
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timeframe: 24h
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condition: selection1 and not filter | count(TargetUserName) by ProcessName > 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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