Ruben Groenewoud 4f8c967185 [New Rule] Web Server Unusual Spike in Error Logs (#5339) ...

* [New Rule] Web Server Unusual Spike in Error Logs

* Update reconnaissance_web_server_unusual_spike_in_error_logs.toml

* Update rules/cross-platform/reconnaissance_web_server_unusual_spike_in_error_logs.toml

* ++

* Remove event limit from error log rule

Removed limit on the number of events in the rule.

* Rename rule to 'Web Server Potential Spike in Error Logs'

* Update rules/cross-platform/reconnaissance_web_server_unusual_spike_in_error_logs.toml

Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>

* Update rules/cross-platform/reconnaissance_web_server_unusual_spike_in_error_logs.toml

Co-authored-by: shashank-elastic <91139415+shashank-elastic@users.noreply.github.com>

* Update rules/cross-platform/reconnaissance_web_server_unusual_spike_in_error_logs.toml

* Update rules/cross-platform/reconnaissance_web_server_unusual_spike_in_error_logs.toml

---------

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
Co-authored-by: shashank-elastic <91139415+shashank-elastic@users.noreply.github.com>

2025-11-24 13:18:23 -05:00

..

command_and_control_google_drive_malicious_file_download.toml

[Rule Tuning] Tighten Up Windows EventLog Indexes, Improve tags (#4464)

2025-02-19 12:54:31 -03:00

command_and_control_non_standard_ssh_port.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

command_and_control_pan_elastic_defend_c2.toml

[New] PANW Command and Control Correlation (#5331)

2025-11-24 14:01:52 +00:00

command_and_control_socks_fortigate_endpoint.toml

[New] SOCKS Traffic from an Unusual Process (#5324)

2025-11-24 13:18:30 +00:00

credential_access_cookies_chromium_browsers_debugging.toml

Prep main for 9.1 (#4555)

2025-03-26 11:04:14 -04:00

credential_access_forced_authentication_pipes.toml

[Rule Tuning] Tighten Up Windows EventLog Indexes, Improve tags (#4464)

2025-02-19 12:54:31 -03:00

credential_access_trufflehog_execution.toml

Monthly Schema Updates (#5187)

2025-10-06 21:39:14 +05:30

defense_evasion_agent_spoofing_mismatched_id.toml

Update defense_evasion_agent_spoofing_mismatched_id.toml (#5312)

2025-11-13 17:26:29 +00:00

defense_evasion_agent_spoofing_multiple_hosts.toml

[Tuning] Agent Spoofing - Multiple Hosts Using Same Agent (#5313)

2025-11-24 12:59:49 +00:00

defense_evasion_deleting_websvr_access_logs.toml

Prep main for 9.1 (#4555)

2025-03-26 11:04:14 -04:00

defense_evasion_deletion_of_bash_command_line_history.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

defense_evasion_elastic_agent_service_terminated.toml

[Rule Tuning] Elastic Agent Service Terminated (#5272)

2025-11-12 08:34:34 -03:00

defense_evasion_encoding_rot13_python_script.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

defense_evasion_masquerading_space_after_filename.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

defense_evasion_timestomp_touch.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

defense_evasion_whitespace_padding_command_line.toml

[New] Command Line Obfuscation via Whitespace Padding (#4860)

2025-08-18 15:26:52 +01:00

discovery_security_software_grep.toml

[Rule Tuning] Q2 Linux DR Tuning - CP (#4170)

2024-10-18 16:38:14 +02:00

discovery_virtual_machine_fingerprinting_grep.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

execution_aws_ssm_sendcommand_with_command_parameters.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

execution_git_exploit_cve_2025_48384.toml

[New Rule] Potential Git CVE-2025-48384 Exploitation (#5301)

2025-11-12 15:45:52 +01:00

execution_pentest_eggshell_remote_admin_tool.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

execution_potential_widespread_malware_infection.toml

[Rule Tuning] ESQL Query Field Dynamic Field Standardization (#4912)

2025-08-05 19:35:41 -04:00

execution_revershell_via_shell_cmd.toml

[Docs | Rule Tuning] Add blog references to rules (#4097)

2024-09-25 15:19:20 -05:00

execution_suspicious_java_netcon_childproc.toml

[Rule Tuning] Linux DR Tuning - Part 6 (#4423)

2025-02-03 14:05:26 +01:00

guided_onboarding_sample_rule.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

impact_hosts_file_modified.toml

Prep main for 9.1 (#4555)

2025-03-26 11:04:14 -04:00

initial_access_azure_o365_with_network_alert.toml

[Rule Tuning] Microsoft Azure or Mail Sign-in from a Suspicious Source (#4946)

2025-07-31 09:57:02 -04:00

initial_access_exfiltration_new_usb_device_mounted.toml

[New] New USB Storage Device Mounted (#5299)

2025-11-11 09:28:54 +00:00

initial_access_zoom_meeting_with_no_passcode.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

multiple_alerts_different_tactics_host.toml

Update multiple_alerts_different_tactics_host.toml (#4854)

2025-06-27 09:53:42 -03:00

multiple_alerts_edr_elastic_defend_by_host.toml

[New] Alerts in Different ATT&CK Tactics by Host (#5343)

2025-11-24 22:46:09 +05:30

multiple_alerts_elastic_defend_netsecurity_by_host.toml

[New] Elastic Defend and Network Security Alerts Correlation (#5332)

2025-11-24 22:15:15 +05:30

multiple_alerts_email_elastic_defend_correlation.toml

[New] Elastic Defend and Email Alerts Correlation (#5336)

2025-11-24 22:26:00 +05:30

multiple_alerts_involving_user.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

multiple_alerts_risky_host_esql.toml

[New] Alerts in Different ATT&CK Tactics by Host (#5343)

2025-11-24 22:46:09 +05:30

persistence_credential_access_modify_auth_module_or_config.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

persistence_shell_profile_modification.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

persistence_ssh_authorized_keys_modification.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

privilege_escalation_echo_nopasswd_sudoers.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

privilege_escalation_setuid_setgid_bit_set_via_chmod.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

privilege_escalation_sudo_buffer_overflow.toml

[FR] Generate investigation guides (#4358)

2025-01-22 11:17:38 -06:00

privilege_escalation_sudoers_file_mod.toml

[Rule Tuning] Sudoers File Modification (#4904)

2025-07-16 10:17:51 +02:00

reconnaissance_web_server_discovery_or_fuzzing_activity.toml

[New Rule] Web Server Discovery or Fuzzing Activity (#5337)

2025-11-24 12:40:12 -05:00

reconnaissance_web_server_unusual_spike_in_error_logs.toml

[New Rule] Web Server Unusual Spike in Error Logs (#5339)

2025-11-24 13:18:23 -05:00

reconnaissance_web_server_unusual_spike_in_error_response_codes.toml

[New Rule] Web Server Unusual Spike in Error Response Codes (#5338)

2025-11-24 13:08:25 -05:00