37 lines
1.1 KiB
YAML
37 lines
1.1 KiB
YAML
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title: Suspicious LDAP-Attributes Used
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ruletype: Sigma
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author: xknow @xknow_infosec
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date: 2019/03/24
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description: Detects the usage of particular AttributeLDAPDisplayNames, which are
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known for data exchange via LDAP by the tool LDAPFragger and are additionally not
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commonly used in companies.
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detection:
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SELECTION_1:
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EventID: 5136
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SELECTION_2:
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AttributeValue: '*'
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SELECTION_3:
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AttributeLDAPDisplayName:
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- primaryInternationalISDNNumber
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- otherFacsimileTelephoneNumber
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- primaryTelexNumber
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condition: (SELECTION_1 and SELECTION_2 and SELECTION_3)
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falsepositives:
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- Companies, who may use these default LDAP-Attributes for personal information
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id: d00a9a72-2c09-4459-ad03-5e0a23351e36
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level: high
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logsource:
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product: windows
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service: security
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modified: 2021/11/27
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references:
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- https://medium.com/@ivecodoe/detecting-ldapfragger-a-newly-released-cobalt-strike-beacon-using-ldap-for-c2-communication-c274a7f00961
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- https://blog.fox-it.com/2020/03/19/ldapfragger-command-and-control-over-ldap-attributes/
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- https://github.com/fox-it/LDAPFragger
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status: test
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tags:
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- attack.t1071
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- attack.t1001.003
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- attack.command_and_control
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