Query: Sigma rule for Detects the usage of particular AttributeLDAPDisplayNames, which are known for data exchange via LDAP by the tool LDAPFr
Matching passage: Sigma rule: Detects the usage of particular AttributeLDAPDisplayNames, which are known for data exchange via LDAP by the tool LDAPFr. Logsource: windows / security. Rule: title: Suspicious LDAP-Attributes Used id: d00a9a72-2c09-4459-ad03-5e0a23351e36 status: test description: Detects the usage of particular AttributeLDAPDisplayNames, which are known for data exchange via LDAP by the tool LDAPFragger and are additionally not commonly used in companies. references: - https://medium.com/@ivecodoe/detecting-ldapfragger-a-newly-released-cobalt-strike-beacon-using-ldap-for-c2-communication-c274a7f00961 - https://blog.fox-it.com/2020/03/19/ldapfragger-command-and-control-over-ldap-attributes/ - https://github.com/fox-it/LDAPFragger author: xknow @xknow_infosec date: 2019-03-24 modified: 2022-10-05 tags: - attack.t1001.003 - attack.command-and-control logsource: product: windows service: security definition: The "Audit Directory Service Changes" logging policy must be configured in order to receive events. Audit events are generated only for objects with configured system access control lists (SACLs). Audit events are generated only for objects with configured system access control lists (SACLs) and only when accessed in a manner that matches their SACL settings. This policy covers the following events ids - 5136, 5137, 5138, 5139, 5141. Note that the default policy does not cover User objects. For that a custom AuditRule need to be setup (See https://github.com/OTRF/Set-AuditRule) detection: selection: EventID: 5136 AttributeValue|contains: '*' AttributeLDAPDisplayName: - primaryInternationalISDNNumber - otherFacsimileTelephoneNumber - primaryTelexNumber condition: selection falsepositives: - Companies, who may use these default LDAP-Attributes for personal information level: high
Near-miss passage: Sigma rule: Detects changes to of the IIS server configuration in order to disable/remove the ETW logging/processing option.. Logsource: windows / iis-configuration. Rule: title: ETW Logging/Processing Option Disabled On IIS Server id: a5b40a90-baf5-4bf7-a6f7-373494881d22 status: test description: Detects changes to of the IIS server configuration in order to disable/remove the ETW logging/processing option. references: - https://learn.microsoft.com/en-us/iis/manage/provisioning-and-managing-iis/configure-logging-in-iis - https://www.microsoft.com/en-us/security/blog/2022/12/12/iis-modules-the-evolution-of-web-shells-and-how-to-detect-them/ - https://learn.microsoft.com/en-us/iis/configuration/system.applicationhost/sites/sitedefaults/logfile/ author: frack113, Nasreddine Bencherchali date: 2024-10-06 tags: - attack.persistence - attack.defense-impairment - attack.t1685.001 - attack.t1505.004 logsource: product: windows service: iis-configuration detection: selection: EventID: 29 Configuration|endswith: '@logTargetW3C' OldValue|contains: ETW filter_main_etw_added: NewValue|contains: ETW condition: selection and not 1 of filter_main_* falsepositives: - Legitimate administrator activity level: medium