2017-02-06 19:03:42 +00:00
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title: Suspicious Kerberos RC4 Ticket Encryption
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status: experimental
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reference: https://adsecurity.org/?p=3458
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2017-02-19 08:19:06 +00:00
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description: Detects logons using RC4 encryption type
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2017-02-18 23:31:59 +00:00
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logsource:
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2017-02-19 10:08:23 +00:00
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product: windows
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2017-03-05 22:55:52 +00:00
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service: security
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2017-02-06 19:03:42 +00:00
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detection:
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selection:
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2017-02-15 22:53:08 +00:00
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EventID: 4769
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TicketOptions: '0x40810000'
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TicketEncryption: '0x17'
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2017-02-06 19:03:42 +00:00
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reduction:
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- ServiceName: '$*'
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- Type: 'Success Audit'
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condition: selection and not reduction
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falsepositives:
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- Service accounts used on legacy systems (e.g. NetApp)
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- Windows Domains with DFL 2003 and legacy systems
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2017-02-16 17:02:26 +00:00
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level: medium
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