Commit Graph

190 Commits

Author SHA1 Message Date
Ruben Groenewoud ef49709c7d [New Rules] Linux Wildcard Injection (#2973)
* [New Rules] Linux Wildcard Injection

* Update rules/linux/privilege_escalation_chown_chmod_unauthorized_file_read.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Update rules/linux/privilege_escalation_potential_wildcard_shell_spawn.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Update rules/linux/privilege_escalation_potential_wildcard_shell_spawn.toml

* Update rules/linux/privilege_escalation_potential_wildcard_shell_spawn.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Update rules/linux/privilege_escalation_potential_wildcard_shell_spawn.toml

---------

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>
Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
2023-08-04 16:32:34 +02:00
Ruben Groenewoud c6eba3e4e6 [New Rule] Suspicious Symbolic Link Created (#2969)
* [New Rule] Suspicious Symbolic Link Created

* Update rules/linux/privilege_escalation_linux_suspicious_symbolic_link.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* fixed unit testing issues after suggestion commit

---------

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>
Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
2023-08-03 23:23:23 +02:00
Ruben Groenewoud 4bcec3397c [New Rule] Potential Suspicious DebugFS Root Device Access (#2982)
* [New Rule] Potential DebugFS Privilege Escalation

* Changed rule name

* Update rules/linux/privilege_escalation_sda_disk_mount_non_root.toml

---------

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
2023-08-03 16:13:34 +02:00
Ruben Groenewoud 207d94e51c [New Rule] Potential Sudo Token Manipulation via Process Injection (#2984)
* [New Rule] Sudo Token Access via Process Injection

* [New Rule] Sudo Token Manipulation via Proc Inject

* Update rules/linux/privilege_escalation_sudo_token_via_process_injection.toml

* Update privilege_escalation_sudo_token_via_process_injection.toml

---------

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
2023-08-03 15:58:25 +02:00
Ruben Groenewoud 7cc841cc87 [New Rule] PE via UID INT_MAX Bug (#2971)
* [New Rule] PE via UID INT_MAX Bug

* changed file name

* Should be more decisive

* fix

* Update rules/linux/privilege_escalation_linux_uid_int_max_bug.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Update rules/linux/privilege_escalation_linux_uid_int_max_bug.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Update rules/linux/privilege_escalation_linux_uid_int_max_bug.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

---------

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>
Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
2023-08-03 15:51:06 +02:00
Ruben Groenewoud a7ff449fbc [Rule Tuning] Some Tunings of several 8.9 rules (#2985)
* [Rule Tuning] Doing some quick tunings

* updated_date bump

* Update rules/linux/discovery_linux_modprobe_enumeration.toml

* Update rules/linux/discovery_linux_modprobe_enumeration.toml

* Update rules/linux/discovery_linux_sysctl_enumeration.toml

* Update rules/linux/persistence_init_d_file_creation.toml

* Update rules/linux/persistence_rc_script_creation.toml

* Update rules/linux/persistence_shared_object_creation.toml

* deprecate rule

* deprecate rule

* Update execution_abnormal_process_id_file_created.toml

* Update discovery_kernel_module_enumeration_via_proc.toml

* Update discovery_linux_modprobe_enumeration.toml

* Update execution_remote_code_execution_via_postgresql.toml

* Update discovery_potential_syn_port_scan_detected.toml

* Added 2 tunings, sorry I missed those..

* One more tune

* Update discovery_suspicious_proc_enumeration.toml
2023-08-03 15:25:33 +02:00
Ruben Groenewoud 03110fb24c [New Rule] SUID/SGUID Enumeration Detected (#2956)
* [New Rule] SUID/SGUID Enumeration Detected

* Remove endgame compatibility

* readded endgame support after troubleshooting

* Update discovery_suid_sguid_enumeration.toml

* Update rules/linux/discovery_suid_sguid_enumeration.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

---------

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>
2023-08-03 09:57:30 +02:00
Ruben Groenewoud 716b621af2 [New Rule] Potential Sudo Hijacking Detected (#2966)
* [New Rule] Potential Sudo Hijacking Detected

* Update privilege_escalation_sudo_hijacking.toml
2023-08-03 09:49:14 +02:00
Ruben Groenewoud 18c2214956 [New Rule] Sudo Command Enumeration Detected (#2946)
* [New Rule] Sudo Command Enumeration Detected

* Update discovery_sudo_allowed_command_enumeration.toml

* revert endgame support due to unit testing fail

* Update discovery_sudo_allowed_command_enumeration.toml

* Update discovery_sudo_allowed_command_enumeration.toml

* Update rules/linux/discovery_sudo_allowed_command_enumeration.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Update rules/linux/discovery_sudo_allowed_command_enumeration.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

---------

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>
2023-08-03 09:39:16 +02:00
Ruben Groenewoud b8bb2da932 [New Rule] Potential Privilege Escalation via OverlayFS (#2974)
* [New Rule] Privilege Escalation via OverlayFS

* Layout change

* Revert "[New Rule] Privilege Escalation via OverlayFS"

This reverts commit f3262d179bc5f54ae5380ffa50d67041fb141c26.

* Made rule broader

* Update privilege_escalation_overlayfs_local_privesc.toml

* Update rules/linux/privilege_escalation_overlayfs_local_privesc.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Update rules/linux/privilege_escalation_overlayfs_local_privesc.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Update rules/linux/privilege_escalation_overlayfs_local_privesc.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Update rules/linux/privilege_escalation_overlayfs_local_privesc.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Update rules/linux/privilege_escalation_overlayfs_local_privesc.toml

* Update user.id to strings

---------

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>
2023-07-31 19:15:11 +02:00
Ruben Groenewoud bbb24704b6 [New Rule] PE through Writable Docker Socket (#2958)
* [New Rule] PE through Writable Docker Socket

* simplified query

* Update privilege_escalation_writable_docker_socket.toml

* Update privilege_escalation_writable_docker_socket.toml

* Update rules/linux/privilege_escalation_writable_docker_socket.toml

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

---------

Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
2023-07-27 10:01:29 +02:00
Ruben Groenewoud 0666b594c6 [New Rule] Linux Local Account Brute Force (#2965) 2023-07-27 09:43:53 +02:00
Ruben Groenewoud b330cf9438 [New Rule] Pspy Process Monitoring Detected (#2945)
* [New Rule] Pspy Process Monitoring Detected

* Update rules/linux/discovery_pspy_process_monitoring_detected.toml

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

* Update rules/linux/discovery_pspy_process_monitoring_detected.toml

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

* Update rules/linux/discovery_pspy_process_monitoring_detected.toml

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

---------

Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
2023-07-26 15:58:33 +02:00
shashank-elastic 6527eb0500 Rule Tuning File Permission Modification in Writable Directory (#2961) 2023-07-26 17:47:00 +05:30
Ruben Groenewoud 056db6003e [Security Content] Added Compatibility note to all IGs (#2943)
* added investigation guide note

* added ig notes

* Update rules/linux/persistence_init_d_file_creation.toml

Co-authored-by: Nastasha Solomon <79124755+nastasha-solomon@users.noreply.github.com>

* implemented note feedback

* Update rules/linux/persistence_init_d_file_creation.toml

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

---------

Co-authored-by: Nastasha Solomon <79124755+nastasha-solomon@users.noreply.github.com>
Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
2023-07-26 12:54:50 +02:00
Ruben Groenewoud dbd7ed65a9 [Tuning] Reverse Shell Rules (#2959)
* [Rule Tuning] Reverse Shell Rule destination.ip tuning

* Updated updated_date
2023-07-25 14:55:56 +02:00
Ruben Groenewoud 8de2684498 [Security Content] Add Investigation Guides to Linux DRs 8.9 (#2868)
* [Investigation Guide] 10 new Linux IG's 8.9

* Added 4 more IG tags

* Update rules/linux/persistence_init_d_file_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_init_d_file_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_init_d_file_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_init_d_file_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_init_d_file_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_rc_script_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_rc_script_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_systemd_scheduled_timer_created.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_systemd_scheduled_timer_created.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_systemd_scheduled_timer_created.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_init_d_file_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_linux_backdoor_user_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_linux_backdoor_user_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_linux_backdoor_user_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_linux_shell_activity_via_web_server.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_linux_user_account_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_linux_user_added_to_privileged_group.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_message_of_the_day_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_message_of_the_day_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_message_of_the_day_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_message_of_the_day_execution.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_message_of_the_day_execution.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_rc_script_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_rc_script_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_rc_script_creation.toml

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Update rules/linux/persistence_message_of_the_day_execution.toml

* Update rules/linux/persistence_init_d_file_creation.toml

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

* Update rules/linux/persistence_init_d_file_creation.toml

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

* Update rules/linux/persistence_linux_shell_activity_via_web_server.toml

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

* Update rules/linux/persistence_rc_script_creation.toml

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

* Update rules/linux/persistence_systemd_scheduled_timer_created.toml

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

* Update rules/linux/persistence_systemd_scheduled_timer_created.toml

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

* implemented feedback

---------

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>
Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
2023-07-19 17:13:24 +02:00
shashank-elastic 3ed8c56942 DR Linux Rule Tuning 8.9 (#2859)
Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
2023-07-10 20:02:42 +05:30
Ruben Groenewoud e5d6d6e4a7 [New Rule] sus cmds executed by unknown executable (#2858)
* [New Rule] sus cmds executed by unknown executable

* added an event.action filter

* Added endgame support, fixed stack version comment

* Update execution_suspicious_executable_running_system_commands.toml

* Update rules/linux/execution_suspicious_executable_running_system_commands.toml

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

* Update execution_suspicious_executable_running_system_commands.toml

---------

Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
2023-07-06 17:32:56 +02:00
Ruben Groenewoud 4e0b7427b7 [New Rules] ftp/rdp bruteforce (#2910)
* [New Rules] ftp/rdp bruteforce

* Update credential_access_potential_successful_linux_ftp_bruteforce.toml

* Update credential_access_potential_successful_linux_rdp_bruteforce.toml

* Update non-ecs-schema.json

* Update rules/linux/credential_access_potential_successful_linux_ftp_bruteforce.toml

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

* Update rules/linux/credential_access_potential_successful_linux_ftp_bruteforce.toml

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

* Update rules/linux/credential_access_potential_successful_linux_rdp_bruteforce.toml

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

* Update rules/linux/credential_access_potential_successful_linux_rdp_bruteforce.toml

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

---------

Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
2023-07-06 17:16:01 +02:00
Ruben Groenewoud d5dee5a6c8 [New Rules] sysctl and modprobe enumeration (#2844)
* [New Rules] sysctl and modprobe enumeration

* Update discovery_linux_modprobe_enumeration.toml

* Update discovery_linux_sysctl_enumeration.toml

* reverted manifest/schema update

* updated tags

* Update discovery_linux_modprobe_enumeration.toml
2023-07-06 16:46:54 +02:00
Ruben Groenewoud 64b3fa8d1d [New Rule] Kernel Load/Unload via Kexec Detected (#2846)
* [New Rule] Kernel Load/Unload via Kexec

* Added additional references

* changed rule name

* changed the query to be more precise

* Update rules/linux/privilege_escalation_load_and_unload_of_kernel_via_kexec.toml

Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>

* changed description based on feedback

* Update rules/linux/privilege_escalation_load_and_unload_of_kernel_via_kexec.toml

Co-authored-by: eric-forte-elastic <119343520+eric-forte-elastic@users.noreply.github.com>

* Update privilege_escalation_load_and_unload_of_kernel_via_kexec.toml

---------

Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>
Co-authored-by: eric-forte-elastic <119343520+eric-forte-elastic@users.noreply.github.com>
2023-07-06 16:03:27 +02:00
Ruben Groenewoud 646c316b66 [New Rules] Linux Reverse Shells (#2905)
* [New Rules] Linux Reverse Shells

* [New Rules] Linux Reverse Shells

* Update rules/linux/execution_shell_via_udp_cli_utility_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/execution_shell_via_java_revshell_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/execution_shell_via_java_revshell_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/execution_shell_via_java_revshell_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/execution_shell_suspicious_parent_child_revshell_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/execution_shell_via_udp_cli_utility_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/execution_shell_via_udp_cli_utility_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/execution_shell_via_reverse_tcp_utility_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/execution_shell_via_reverse_tcp_utility_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/execution_shell_suspicious_parent_child_revshell_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/execution_shell_suspicious_parent_child_revshell_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Delete UDP rule to add in separate PR

* Update rules/linux/execution_shell_via_lolbin_interpreter_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/execution_shell_via_tcp_cli_utility_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/execution_shell_via_reverse_tcp_utility_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/execution_shell_via_tcp_cli_utility_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/execution_shell_via_tcp_cli_utility_linux.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Deleted one rule and tuned the others

* Improved the rules' performance

* Added the reverse_tcp rule back after tuning

* Update execution_shell_via_lolbin_interpreter_linux.toml

---------

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
2023-07-06 15:27:57 +02:00
Ruben Groenewoud 78055bbeee [New Rule] Suspicious Proc Enumeration (#2845)
* [New Rule] Suspicious Proc Enumeration

* Update rules/linux/discovery_suspicious_proc_enumeration.toml

Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>

* Update rules/linux/discovery_suspicious_proc_enumeration.toml

Co-authored-by: eric-forte-elastic <119343520+eric-forte-elastic@users.noreply.github.com>

* fix tags

---------

Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>
Co-authored-by: eric-forte-elastic <119343520+eric-forte-elastic@users.noreply.github.com>
2023-07-04 11:34:56 +02:00
Ruben Groenewoud 7a1f376a34 [New Rules] Conversion of deprecated ERs over to DRs (#2877)
* [Conversion] Data Encrypted via OpenSSL

* [Conversion] sus funzip extraction/decompression

* [Conversion] LD_PRELOAD env var process injection

* fix unit testing failure

* suspecting endgame incompatibility

* fixed typo

* added LD_LIBRARY_PATH

* Update defense_evasion_ld_preload_env_variable_process_injection.toml

* Update defense_evasion_ld_preload_env_variable_process_injection.toml

* Added exclusions for FPs

* Update rules/linux/defense_evasion_ld_preload_env_variable_process_injection.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/impact_data_encrypted_via_openssl.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

---------

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
2023-07-02 10:39:44 +02:00
Ruben Groenewoud 9794f8f0af [New Rule] Postgresql Code Execution (#2863)
* [New Rule] Postgresql Code Execution

* Update rules/linux/execution_remote_code_execution_via_postgresql.toml

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

* Update execution_remote_code_execution_via_postgresql.toml

---------

Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
2023-06-30 13:17:24 +02:00
eric-forte-elastic aaa4ce2ea0 [BUG] test_all_rule_queries_optimized does not run on rules (#2823)
* Fixed kql -> kuery in test_all_rule_queries_opt...

* all queries optimized

* manually reconciled all rules that failed due to toml escaped chars

* merge rules from main

* Rules needing optimization

* Fix optimized note

* fix another note

* another note fix

* fixing whitespace

* Updated for readability

---------

Co-authored-by: terrancedejesus <terrance.dejesus@elastic.co>
Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>
2023-06-23 10:58:31 -04:00
Jonhnathan b4c84e8a40 [Security Content] Tags Reform (#2725)
* Update Tags

* Bump updated date separately to be easy to revert if needed

* Update resource_development_ml_linux_anomalous_compiler_activity.toml

* Apply changes from the discussion

* Update persistence_init_d_file_creation.toml

* Update defense_evasion_timestomp_sysmon.toml

* Update defense_evasion_application_removed_from_blocklist_in_google_workspace.toml

* Update missing Tactic tags

* Update unit tests to match new tags

* Add missing IG tags

* Delete okta_threat_detected_by_okta_threatinsight.toml

* Update command_and_control_google_drive_malicious_file_download.toml

* Update persistence_rc_script_creation.toml

* Mass bump

* Update persistence_shell_activity_by_web_server.toml

* .

---------

Co-authored-by: Mika Ayenson <Mika.ayenson@elastic.co>
Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>
2023-06-22 18:38:56 -03:00
Ruben Groenewoud 7c5f17e30c [New Rules] User / Group Creation & Privileged Group Addition (#2546)
* [New Rules] user/group creation

* Update rules/linux/persistence_linux_group_creation.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* Update rules/linux/persistence_linux_user_account_creation.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* Update rules/linux/persistence_linux_user_added_to_privileged_group.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* added backdoor user account

* added host.os.type == linux for unit testing fix

* unit testing fixes

* Update rules/linux/persistence_linux_backdoor_user_creation.toml

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

* Update rules/linux/persistence_linux_backdoor_user_creation.toml

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

* Added OSQuery to Investigation Guides

* Update rules/linux/persistence_linux_backdoor_user_creation.toml

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

* Update rules/linux/persistence_linux_backdoor_user_creation.toml

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

* removed investigation guides to add in future PR

* Fixed some issues with the rules

* fixed typo

* Update rules/linux/persistence_linux_backdoor_user_creation.toml

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

* Update rules/linux/persistence_linux_user_account_creation.toml

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

* Update rules/linux/persistence_linux_user_added_to_privileged_group.toml

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

* Update rules/linux/persistence_linux_group_creation.toml

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

---------

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
2023-06-22 15:15:48 +02:00
Ruben Groenewoud 71186c8788 [Rule Tuning] Potential Persistence Through Run Control Detected (#2857)
* [Rule Tuning] changed rule type to new_terms

* Updated min stack comment

* Update persistence_rc_script_creation.toml

* Changed description, removed file.path from new_terms field because it is not necessary

* added host.id to new terms field and bumped up min stack
2023-06-22 13:39:36 +02:00
Ruben Groenewoud 7d64dc2a87 [Rule tunings / New Rule] Kernel Unload and Enumeration (#2838)
* [Rule Tunings] Kernel Module Enumeration / Removal

* [Rule Tunings] Kernel Module Enumeration and Removal

* Deleted copy of wrong file

* EQL Conversion and made the rule more resilient

* Converted rules to EQL and made rules more resilient

* Removed unwanted rule from PR

* fixed unit tests

* fixed unit testing, removed endgame support

* Added a rule to detect kernel module enum via proc

* Did some additional tuning, 0 hits in RedSector now
2023-06-22 10:11:52 +02:00
Ruben Groenewoud dc05f1d8f3 [New Rule] Sus Network Activity from Unknown Executable (#2856)
* [New Rule] Sus Network Activity from Unknown Executable

* Update command_and_control_suspicious_network_activity_from_unknown_executable.toml

* Update rules/linux/command_and_control_suspicious_network_activity_from_unknown_executable.toml

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

* Update rules/linux/command_and_control_suspicious_network_activity_from_unknown_executable.toml

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

* added endgame support, changed min stack comment

* Update rules/linux/command_and_control_suspicious_network_activity_from_unknown_executable.toml

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

---------

Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
2023-06-14 23:27:29 +02:00
Ruben Groenewoud b4a218ed1c [New Rule] Shared Object Created (#2848)
* [New Rule] Shared Object Created or Changed

* Removed sub technique

* Update rules/linux/persistence_shared_object_creation.toml

Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>

* changed description slightly

* Update rules/linux/persistence_shared_object_creation.toml

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

* Update rules/linux/persistence_shared_object_creation.toml

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

* added T1574.006

---------

Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>
Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
2023-06-13 22:51:07 +02:00
Ruben Groenewoud 4f9f28c370 [New Rules] Cron Job / Systemd Service Creation (#2847)
* [New Rules] Cron Job/Systemd Service Creation

* Added execution to tags

* Added additional EndGame Support

* Update rules/linux/persistence_cron_job_creation.toml

Co-authored-by: eric-forte-elastic <119343520+eric-forte-elastic@users.noreply.github.com>

* Update rules/linux/persistence_systemd_service_creation.toml

Co-authored-by: eric-forte-elastic <119343520+eric-forte-elastic@users.noreply.github.com>

---------

Co-authored-by: eric-forte-elastic <119343520+eric-forte-elastic@users.noreply.github.com>
2023-06-13 09:44:44 +02:00
Ruben Groenewoud 644d2f5b26 [New Rule] New Systemd Timer Created (#2601)
* [New Rule] New Systemd Timer Created

* improve query runtime performance

* added process.name entries for alert reduction

* attempt to fix gh unit testing failure

* added host.os.type==linux to fix unit test error

* Added OSQuery to investigation guides

* added additional process names

* removed investigation guides to add in future PR

* removed investigation guide tag

* Changed rule to new_terms rule to reduce FPs

* fixed query

* formatting fix

* Learnt another thing about KQL.. Formatting fix.

* unit test fix

* Update rules/linux/persistence_systemd_scheduled_timer_created.toml

Co-authored-by: eric-forte-elastic <119343520+eric-forte-elastic@users.noreply.github.com>

---------

Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>
Co-authored-by: eric-forte-elastic <119343520+eric-forte-elastic@users.noreply.github.com>
2023-06-13 09:15:47 +02:00
Jonhnathan 05aac4f371 [Security Content] Add Investigation Guides to Windows rules (#2678)
* [Security Content] Add Investigation Guides to Windows rules

* Update privilege_escalation_service_control_spawned_script_int.toml

* Update execution_reverse_shell_via_named_pipe.toml

* Apply suggestions from code review

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: Nastasha Solomon <79124755+nastasha-solomon@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>

* Update execution_command_prompt_connecting_to_the_internet.toml

---------

Co-authored-by: Benjamin Ironside Goldstein <91905639+benironside@users.noreply.github.com>
Co-authored-by: Nastasha Solomon <79124755+nastasha-solomon@users.noreply.github.com>
Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>
2023-05-26 10:25:41 -03:00
Jonhnathan 0d5e25e896 [Rule Tuning] Interactive Terminal Spawned via Python (#2781)
* [Rule Tuning] Interactive Terminal Spawned via Python

* Update execution_python_tty_shell.toml

* Update execution_python_tty_shell.toml

* Apply suggestions from code review

Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>

---------

Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
2023-05-26 10:19:35 -03:00
Ruben Groenewoud 54c5c17aa3 [Rule Tuning & Addition] Potential Linux SSH Brute Force (#2583)
* [Rule tuning & Addition] SSH Bruteforce

* Update rules/linux/credential_access_potential_linux_ssh_bruteforce_internal.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Update rules/linux/credential_access_potential_linux_ssh_bruteforce_external.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Update rules/linux/credential_access_potential_linux_ssh_bruteforce_external.toml

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Update rules/linux/credential_access_potential_linux_ssh_bruteforce_external.toml

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

* Update rules/linux/credential_access_potential_linux_ssh_bruteforce_internal.toml

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

* fixed rule_id change, added additional cidr match

* added host.os.type==linux

* Update credential_access_potential_linux_ssh_bruteforce_internal.toml

* Formatting style change

* Update rules/linux/credential_access_potential_linux_ssh_bruteforce_external.toml

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

* Update rules/linux/credential_access_potential_linux_ssh_bruteforce_external.toml

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

* Added related rules suggestion

* Added related rule suggestion

* added additional internal ip ranges

* added additional internal ip ranges

---------

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>
Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
2023-05-25 12:00:44 +02:00
Ruben Groenewoud 9ebffb44ff [New Rules] Ransomware Encryption & Note Creation (#2652)
* [New Rules] Ransomware Encryption & Note Creation

* changed description

* Update rules/linux/impact_potential_linux_ransomware_file_encryption.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/impact_potential_linux_ransomware_file_encryption.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/impact_potential_linux_ransomware_note_detected.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

---------

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
2023-05-16 11:30:00 +02:00
shashank-elastic 1293365a7f Rule to detect Potential Linux Credential Dumping via Proc Filesystem (#2751) 2023-05-05 22:23:15 +05:30
Ruben Groenewoud 26258f806a [New Rules] Persistence through MOTD (#2608)
* [New Rules] Persistence through MOTD

* fixed unit error test by adding timestamp_override

* Update rules/linux/persistence_message_of_the_day_execution.toml

Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>

* Update rules/linux/persistence_message_of_the_day_creation.toml

Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>

* added host.os.type == "linux"

* removed ability to bypass chmod by using e.g. 700

* Added endgame support, changed query

* Changed query

* updated risk_score

* added OSQuery to investigation guides

* Update rules/linux/persistence_message_of_the_day_creation.toml

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

* Update rules/linux/persistence_message_of_the_day_creation.toml

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

* Update rules/linux/persistence_message_of_the_day_creation.toml

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

* Update rules/linux/persistence_message_of_the_day_creation.toml

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

* Update rules/linux/persistence_message_of_the_day_creation.toml

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

* Update rules/linux/persistence_message_of_the_day_creation.toml

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

* removed investigation guides to add in future PR

* removed investigation guide tag

* Changed rule to new terms rule for FP reduction

* Update rules/linux/persistence_message_of_the_day_creation.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

---------

Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>
Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
2023-05-05 10:29:15 +02:00
Ruben Groenewoud 1aea1ee9bb [New rule] Sus File Creation in init.d for Persistence Detected (#2653)
* [New Rule] Init.d File and Service Creation

* Changed rule name

* [New Rule] Sus File Creation init.d Persistence

* Added Endgame compatibility

* added touch

* Added OSQuery to investigation guide

* added additional processes

* removed investigation guide to add in sep PR

* changed rule name

* removed investigation guide tag

* Update rules/linux/persistence_init_d_file_creation.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/persistence_init_d_file_creation.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/persistence_init_d_file_creation.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/persistence_init_d_file_creation.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/persistence_init_d_file_creation.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update persistence_init_d_file_creation.toml

---------

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
2023-05-05 09:54:42 +02:00
Ruben Groenewoud 09719dd0c5 [Rule Tuning] Potential Shell via Web Server (#2585)
* tuned web shell logic, and converted to EQL

* Removed old, created new rule to bypass "type" bug

* Revert "Removed old, created new rule to bypass "type" bug"

This reverts commit e994b62ecb838f73fa56d145e529169ebd2f5133.

* Revert "tuned web shell logic, and converted to EQL"

This reverts commit 28bda94b846cbb4ae1a084e707db2b6df458a7ca.

* Deprecated old rule, added new

* formatting fix

* removed endgame index

* Fixed changes captured as edited, not created

* Update rules/linux/persistence_shell_activity_through_web_server.toml

Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>

* fix conflict

* added host.os.type==linux for unit testing

* removed wildcards in process.args

* Update rules/linux/persistence_shell_activity_via_web_server.toml

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

* fixed conflict by changing file name and changes

* Trying to resolve the GH conflict

* attempt to fix GH conflict #2

* Update persistence_shell_activity_by_web_server.toml

* Added endgame support

* Added OSQuery to investigation guide

* Update rules/linux/persistence_linux_shell_activity_via_web_server.toml

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

* Update rules/linux/persistence_linux_shell_activity_via_web_server.toml

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

* removed investigation guide to add in future PR

---------

Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>
Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
2023-05-05 09:47:49 +02:00
shashank-elastic 855ba16299 Linux Rule Tuning (#2753) 2023-05-02 19:12:13 +05:30
shashank-elastic cd5bc2c44b Update file path regex for /run (#2749) 2023-04-26 14:02:16 +05:30
shashank-elastic 0107e0fcaa Detect Threat indicators for VMware ESXi servers (#2708) 2023-04-25 20:17:16 +05:30
shashank-elastic 2996c79ff4 Detect Mount Execution With Hidepid Parameter (#2706) 2023-04-22 08:00:30 +05:30
shashank-elastic 2705df81e2 Tune Shell evasion Rule to incorporate GTFOArgs shell evasion (#2687) 2023-04-20 18:35:18 +05:30
shashank-elastic f7aa477536 Correct Event Action to include endgame event schema (#2610) 2023-04-20 17:28:01 +05:30
shashank-elastic 94baa89ea8 New Rule to identify defense evasion via PRoot (#2625) 2023-04-20 17:14:01 +05:30