Query: detect Detects failed logon attempts from clients to MSSQL server. in logs
Matching passage: Sigma rule: Detects failed logon attempts from clients to MSSQL server.. Logsource: windows / application. Rule: title: MSSQL Server Failed Logon id: 218d2855-2bba-4f61-9c85-81d0ea63ac71 related: - id: ebfe73c2-5bc9-4ed9-aaa8-8b54b2b4777d type: similar status: test description: Detects failed logon attempts from clients to MSSQL server. references: - https://cybersecthreat.com/2020/07/08/enable-mssql-authentication-log-to-eventlog/ - https://www.experts-exchange.com/questions/27800944/EventID-18456-Failed-to-open-the-explicitly-specified-database.html author: Nasreddine Bencherchali (Nextron Systems), j4son date: 2023-10-11 modified: 2024-06-26 tags: - attack.credential-access - attack.t1110 logsource: product: windows service: application definition: 'Requirements: Must enable MSSQL authentication.' detection: selection: Provider_Name|contains: MSSQL EventID: 18456 condition: selection falsepositives: - This event could stem from users changing an account's password that's used to authenticate via a job or an automated process. Investigate the source of such events and mitigate them level: low
Near-miss passage: Sigma rule: Detects when a user disables a critical security feature for an organization.. Logsource: github / audit. Rule: title: Github High Risk Configuration Disabled id: 8622c92d-c00e-463c-b09d-fd06166f6794 status: test description: Detects when a user disables a critical security feature for an organization. references: - https://docs.github.com/en/organizations/managing-oauth-access-to-your-organizations-data/disabling-oauth-app-access-restrictions-for-your-organization - https://docs.github.com/en/organizations/keeping-your-organization-secure/managing-security-settings-for-your-organization/reviewing-the-audit-log-for-your-organization#dependabot_alerts-category-actions - https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/enabling-features-for-your-repository/managing-security-and-analysis-settings-for-your-repository - https://docs.github.com/en/enterprise-cloud@latest/admin/monitoring-activity-in-your-enterprise/reviewing-audit-logs-for-your-enterprise/audit-log-events-for-your-enterprise author: Muhammad Faisal (@faisalusuf) date: 2023-01-29 modified: 2024-07-22 tags: - attack.credential-access - attack.persistence - attack.defense-impairment - attack.t1556 logsource: product: github service: audit definition: 'Requirements: The audit log streaming feature must be enabled to be able to receive such logs. You can enable following the documentation here: https://docs.github.com/en/enterprise-cloud@latest/admin/monitoring-activity-in-your-enterprise/reviewing-audit-logs-for-your-enterprise/streaming-the-audit-log-for-your-enterprise#setting-up-audit-log-streaming' detection: selection: action: - business_advanced_security.disabled_for_new_repos - business_advanced_security.disabled_for_new_user_namespace_repos - business_advanced_security.disabled - business_advanced_security.user_namespace_repos_disabled - org.advanced_security_disabled_for_new_repos - org.advanced_security_disabled_on_all_repos - org.advanced_security_policy_selected_member_disabled - org.disable_oauth_app_restrictions - org.disable_two_factor_requirement - repo.advanced_security_disabled condition: selection falsepositives: - Approved administrator/owner activities. level: high