Query: Sigma rule for Detects use of .NET InstallUtil.exe in order to download arbitrary files. The files will be written to "%LOCALAPPDATA%\M
Matching passage: Sigma rule: Detects use of .NET InstallUtil.exe in order to download arbitrary files. The files will be written to "%LOCALAPPDATA%\M. Logsource: windows / process_creation. Rule: title: File Download Via InstallUtil.EXE id: 75edd216-1939-4c73-8d61-7f3a0d85b5cc status: test description: 'Detects use of .NET InstallUtil.exe in order to download arbitrary files. The files will be written to "%LOCALAPPDATA%\Microsoft\Windows\INetCache\IE\" ' references: - https://github.com/LOLBAS-Project/LOLBAS/pull/239 author: Nasreddine Bencherchali (Nextron Systems) date: 2022-08-19 modified: 2023-11-09 tags: - attack.stealth - attack.t1218 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \InstallUtil.exe - OriginalFileName: InstallUtil.exe selection_cli: CommandLine|contains: - ftp:// - http:// - https:// condition: all of selection_* falsepositives: - Unknown level: medium
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