sigma-rules

Files

T

Ruben Groenewoud f8f3576971 [New Rule] Potential UDP Reverse Shell (#2906 )

* [New Rule] Potential UDP Reverse Shell Detected

* Title change

* Update execution_shell_via_udp_cli_utility_linux.toml

* Update execution_shell_via_udp_cli_utility_linux.toml

* Update rules/linux/execution_shell_via_udp_cli_utility_linux.toml

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>

* updated non-ecs-schema to update unmapped fields

* Update rules/linux/execution_shell_via_udp_cli_utility_linux.toml

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>

* Removed netcat, added destination ip list

* Update execution_shell_via_udp_cli_utility_linux.toml

* Added precautionary exclusions

* Update rules/linux/execution_shell_via_udp_cli_utility_linux.toml

* replaced schema files

* Update execution_shell_via_udp_cli_utility_linux.toml

* Update execution_shell_via_udp_cli_utility_linux.toml

* Update execution_shell_via_udp_cli_utility_linux.toml

---------

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>

2023-09-07 17:13:22 +02:00

command_and_control_linux_chisel_client_activity.toml

[New Rules] Linux Tunneling and Port Forwarding (#3028 )

2023-08-30 22:12:19 +02:00

command_and_control_linux_chisel_server_activity.toml

[New Rules] Linux Tunneling and Port Forwarding (#3028 )

2023-08-30 22:12:19 +02:00

command_and_control_linux_iodine_activity.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

command_and_control_linux_suspicious_proxychains_activity.toml

[New Rules] Linux Tunneling and Port Forwarding (#3028 )

2023-08-30 22:12:19 +02:00

command_and_control_linux_tunneling_and_port_forwarding.toml

[New Rules] Linux Tunneling and Port Forwarding (#3028 )

2023-08-30 22:12:19 +02:00

command_and_control_suspicious_network_activity_from_unknown_executable.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

command_and_control_tunneling_via_earthworm.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

credential_access_bruteforce_password_guessing.toml

[Rule Tuning] Small Linux DR Tuning (#3074 )

2023-09-05 14:20:57 +02:00

credential_access_collection_sensitive_files.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

credential_access_credential_dumping.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

credential_access_gdb_init_memory_dump.toml

[New Rules] GDB Secret Dumping (#3060 )

2023-08-31 17:41:22 +02:00

credential_access_potential_linux_local_account_bruteforce.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

credential_access_potential_linux_ssh_bruteforce_external.toml

DR Linux Rule Tuning 8.9 (#2859 )

2023-07-10 20:02:42 +05:30

credential_access_potential_linux_ssh_bruteforce_internal.toml

DR Linux Rule Tuning 8.9 (#2859 )

2023-07-10 20:02:42 +05:30

credential_access_potential_successful_linux_ftp_bruteforce.toml

[New Rules] ftp/rdp bruteforce (#2910 )

2023-07-06 17:16:01 +02:00

credential_access_potential_successful_linux_rdp_bruteforce.toml

[New Rules] ftp/rdp bruteforce (#2910 )

2023-07-06 17:16:01 +02:00

credential_access_proc_credential_dumping.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

credential_access_ssh_backdoor_log.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_attempt_to_disable_iptables_or_firewall.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_attempt_to_disable_syslog_service.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_base16_or_base32_encoding_or_decoding_activity.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_binary_copied_to_suspicious_directory.toml

[New Rule] Binary Copied and/or Moved to Suspicious Directory (#3048 )

2023-08-31 13:46:41 +02:00

defense_evasion_chattr_immutable_file.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_disable_apparmor_attempt.toml

[New Rule] Potential Disabling of AppArmor (#3046 )

2023-08-31 17:06:15 +02:00

defense_evasion_disable_selinux_attempt.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_esxi_suspicious_timestomp_touch.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_file_deletion_via_shred.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_file_mod_writable_dir.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_hidden_file_dir_tmp.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_hidden_shared_object.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_kernel_module_removal.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_ld_preload_env_variable_process_injection.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_log_files_deleted.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_mount_execution.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_potential_proot_exploits.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_rename_esxi_files.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

defense_evasion_rename_esxi_index_file.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

discovery_esxi_software_via_find.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

discovery_esxi_software_via_grep.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

discovery_kernel_module_enumeration.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

discovery_linux_hping_activity.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

discovery_linux_nping_activity.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

discovery_pspy_process_monitoring_detected.toml

[New Rule] Pspy Process Monitoring Detected (#2945 )

2023-07-26 15:58:33 +02:00

discovery_sudo_allowed_command_enumeration.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

discovery_suid_sguid_enumeration.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

discovery_unusual_user_enumeration_via_id.toml

[New Rule] Sus User Privilege Enumeration via id (#3049 )

2023-08-31 18:13:42 +02:00

discovery_virtual_machine_fingerprinting.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_abnormal_process_id_file_created.toml

[Rule Tuning] 3 tunings to reduce FPs (#3058 )

2023-08-31 17:16:57 +02:00

execution_file_execution_followed_by_deletion.toml

[New Rule] File Creation, Exec and Self-Deletion (#3045 )

2023-08-31 17:32:17 +02:00

execution_file_transfer_or_listener_established_via_netcat.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_network_event_post_compilation.toml

[New Rules] sus program compilation activity (#3043 )

2023-08-31 09:30:56 +02:00

execution_perl_tty_shell.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_process_started_from_process_id_file.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_process_started_in_shared_memory_directory.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_python_tty_shell.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_remote_code_execution_via_postgresql.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_shell_evasion_linux_binary.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_shell_suspicious_parent_child_revshell_linux.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_shell_via_java_revshell_linux.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_shell_via_lolbin_interpreter_linux.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_shell_via_meterpreter_linux.toml

[New Rule] Potential Meterpreter Reverse Shell (#3007 )

2023-09-07 17:04:06 +02:00

execution_shell_via_suspicious_binary.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_shell_via_tcp_cli_utility_linux.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_shell_via_udp_cli_utility_linux.toml

[New Rule] Potential UDP Reverse Shell (#2906 )

2023-09-07 17:13:22 +02:00

execution_sus_extraction_or_decrompression_via_funzip.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_suspicious_executable_running_system_commands.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_suspicious_mining_process_creation_events.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

execution_tc_bpf_filter.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

impact_data_encrypted_via_openssl.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

impact_esxi_process_kill.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

impact_potential_linux_ransomware_file_encryption.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

impact_potential_linux_ransomware_note_detected.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

impact_process_kill_threshold.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

lateral_movement_telnet_network_activity_external.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

lateral_movement_telnet_network_activity_internal.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_chkconfig_service_add.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_credential_access_modify_ssh_binaries.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_cron_job_creation.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_dynamic_linker_backup.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_etc_file_creation.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_init_d_file_creation.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_insmod_kernel_module_load.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_kde_autostart_modification.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_linux_backdoor_user_creation.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_linux_group_creation.toml

[Security Content] Added Compatibility note to all IGs (#2943 )

2023-07-26 12:54:50 +02:00

persistence_linux_shell_activity_via_web_server.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_linux_user_account_creation.toml

[Security Content] Added Compatibility note to all IGs (#2943 )

2023-07-26 12:54:50 +02:00

persistence_linux_user_added_to_privileged_group.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_message_of_the_day_creation.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_message_of_the_day_execution.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_rc_script_creation.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_shared_object_creation.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_systemd_scheduled_timer_created.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

persistence_systemd_service_creation.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

privilege_escalation_chown_chmod_unauthorized_file_read.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

privilege_escalation_container_util_misconfiguration.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

privilege_escalation_ld_preload_shared_object_modif.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

privilege_escalation_linux_suspicious_symbolic_link.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

privilege_escalation_linux_uid_int_max_bug.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

privilege_escalation_load_and_unload_of_kernel_via_kexec.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

privilege_escalation_overlayfs_local_privesc.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

privilege_escalation_pkexec_envar_hijack.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

privilege_escalation_potential_wildcard_shell_spawn.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

privilege_escalation_sda_disk_mount_non_root.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

privilege_escalation_shadow_file_read.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

privilege_escalation_sudo_cve_2019_14287.toml

[New Rule] Potential Sudo Privilege Escalation via CVE-2019-14287 (#3057 )

2023-08-31 13:11:34 +02:00

privilege_escalation_sudo_hijacking.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

privilege_escalation_sudo_token_via_process_injection.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

privilege_escalation_uid_change_post_compilation.toml

[New Rules] sus program compilation activity (#3043 )

2023-08-31 09:30:56 +02:00

privilege_escalation_unshare_namespace_manipulation.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00

privilege_escalation_writable_docker_socket.toml

[Security Content] Include "Data Source: Elastic Defend" tag (#3002 )

2023-09-05 14:22:01 -04:00