[Rule Tuning] Linux Rules (#3092)

* [Rule Tuning] [WIP] Linux DR * Update defense_evasion_binary_copied_to_suspicious_directory.toml * Fixed tag * Added additional tuning * unit test fix * Additional tuning * tuning * added max signals * Added max_signals=1 to brute force rules * Cross-Platform Tuning * Small fix * new_terms conversion * typo * new_terms conversion * Ransomware rule tuning * performance tuning * new_terms conversion for auditd_manager * tune * Need coffee * kql/eql stuff * formatting improvement * new_terms sudo hijacking conversion * exclusion * Deprecations that were added last tuning * Deprecations that were added last tuning * Increased max timespan for brute force rules * version bump * added domain tag * Two tunings * More tuning * Additional tuning * updated_date bump * query optimization * Tuning * Readded the exclusions for this one * Changed int comparison * Some tunings * Update persistence_systemd_scheduled_timer_created.toml * Update rules/linux/privilege_escalation_ld_preload_shared_object_modif.toml Co-authored-by: Isai <59296946+imays11@users.noreply.github.com> * [New Rule] Potential curl CVE-2023-38545 Exploitation * Revert "[New Rule] Potential curl CVE-2023-38545 Exploitation" This reverts commit 9c04d1b53d3d63678289f43ec0c7b617d26f1ce0. * Update rules/cross-platform/command_and_control_non_standard_ssh_port.toml * Update rules/linux/command_and_control_cat_network_activity.toml * Update persistence_message_of_the_day_execution.toml * Changed max_signals * Revert "Merge branch 'main' into rule-tuning-ongoing-dr" This reverts commit 1106b5d2eba1a3529eff325226d6baabfd4b0bf3, reversing changes made to 5ff510757f25b0cb32e1ef18e9e2c34c8ec325a8. * Revertable merge * Update defense_evasion_ld_preload_env_variable_process_injection.toml * File name change --------- Co-authored-by: Isai <59296946+imays11@users.noreply.github.com> Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
2023-10-23 16:28:58 +02:00
parent 7254c582c5
commit 020fff3aea
60 changed files with 749 additions and 422 deletions
@@ -54,10 +54,10 @@ type = "eql"
 query = '''
 process where host.os.type == "linux" and event.action in ("exec", "exec_event") and
 (
-  (process.parent.name : "python*" and process.name : "*sh" and process.parent.args_count >= 3 and
-   process.parent.args : "*pty.spawn*" and process.parent.args : "-c") or
-  (process.parent.name : "python*" and process.name : "*sh" and process.args : "*sh" and process.args_count == 1
-   and process.parent.args_count == 1)
+  (process.parent.name : "python*" and process.name in ("bash", "dash", "ash", "sh", "tcsh", "csh", "zsh", "ksh",
+   "fish") and process.parent.args_count >= 3 and process.parent.args : "*pty.spawn*" and process.parent.args : "-c") or
+  (process.parent.name : "python*" and process.name in ("bash", "dash", "ash", "sh", "tcsh", "csh", "zsh", "ksh",
+   "fish") and process.args : "*sh" and process.args_count == 1 and process.parent.args_count == 1)
 )
 '''