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1429 Commits

Author SHA1 Message Date
Mika Ayenson 2ffb0e7fe2 [New Rule] Potential Abuse of Resources by High Token Count and Large Response Sizes (#3644) 2024-05-03 18:01:53 -05:00
Justin Ibarra 54ff270c62 [New Rule] AWS S3 Bucket Enumeration or Brute Force (#3635) 
* [New Rule] AWS S3 Bucket Enumeration or Brute Force
Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
---------

Co-authored-by: brokensound77 <brokensound77@users.noreply.github.com>
Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
 2024-05-01 15:00:33 -06:00
Ruben Groenewoud e29994c338 [New Rule] Shell Configuration Modification (#3629) 
* [New Rule] Shell Configuration Modification

* description update

* uuid update

* query update

* query update

* Update rules/linux/persistence_shell_configuration_modification.toml

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

---------

Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
 2024-04-30 13:41:13 +02:00
Ruben Groenewoud 115c3a6dfd [Rule Tuning] Linux DRs (#3628) 2024-04-30 13:26:09 +02:00
Samirbous 8f6de1c235 [New] Potential privilege escalation via CVE-2022-38028 (#3616) 
* [New] Potential privilege escalation via CVE-2022-38028

https://www.microsoft.com/en-us/security/blog/2024/04/22/analyzing-forest-blizzards-custom-post-compromise-tool-for-exploiting-cve-2022-38028-to-obtain-credentials/

* Update privilege_escalation_exploit_cve_202238028.toml

* Update privilege_escalation_exploit_cve_202238028.toml

* Update privilege_escalation_exploit_cve_202238028.toml

---------

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
 2024-04-29 15:10:27 +01:00
shashank-elastic 7673ba484d Fix minstack version for 0365 in azure integration rules (#3612) 2024-04-22 19:17:49 +05:30
Terrance DeJesus 69d42ecc71 updating performance note (#3608) 2024-04-18 16:36:07 -04:00
Terrance DeJesus 25dafb68f1 [Rule Tuning] Reverting To Previous Version (#3607) 2024-04-18 15:19:27 -04:00
Terrance DeJesus 91e69ac322 [Rule Tuning] Tuning Account Password Reset Remotely (#3478) 
* tuning 'Account Password Reset Remotely'

* adjusted note

* fixing description

* Update rules/windows/persistence_remote_password_reset.toml

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

* updated note about performance; toml lint

* bumping min-stack to resolve version lock

* reverting query to main

---------

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
 2024-04-18 12:49:32 -04:00
Jonhnathan 6ae0902a38 [New Rule] Potential Windows Session Hijacking via CcmExec (#3602) 
* [New Rule] Potential Windows Session Hijacking via CcmExec

* Update rules/windows/defense_evasion_sccm_scnotification_dll.toml

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

---------

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
 2024-04-18 12:57:35 -03:00
Jonhnathan 5004ff115c [Rule Tuning] Further Tight up Elastic Defend Index Patterns (#3584) 
Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
 2024-04-16 13:26:42 -03:00
Terrance DeJesus 74312797bf adjust aws rule index patterns and tags (#3595) 2024-04-16 10:08:57 -04:00
Jonhnathan c2d1586270 [Rule Tuning] Windows BBR Promotion (#3577) 
* [Rule Tuning] Windows BBR Promotion

* Update non-ecs-schema.json

* Update persistence_netsh_helper_dll.toml

* Update persistence_werfault_reflectdebugger.toml

* Update privilege_escalation_unquoted_service_path.toml

* Update defense_evasion_msdt_suspicious_diagcab.toml

* Update defense_evasion_suspicious_msiexec_execution.toml

* Update discovery_security_software_wmic.toml

* Revert "Update defense_evasion_msdt_suspicious_diagcab.toml"

This reverts commit 0e1f3ea3e18a146c421a5bda784633cca4a2b0c0.

* Revert "Update defense_evasion_suspicious_msiexec_execution.toml"

This reverts commit 4e26a167774ad712d19334a4c2c712cc1d550e7f.

* Revert "Update discovery_security_software_wmic.toml"

This reverts commit d638cec354a46cacab1e62596f4ad939a1d9c32a.

---------

Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
 2024-04-16 09:28:17 -03:00
Samirbous 919a438257 Update defense_evasion_untrusted_driver_loaded.toml (#3596) 
excluding `errorCode_endpoint:*` status (noisy)
 2024-04-15 14:52:39 +01:00
Samirbous 9692e59abb [Tuning] Connection to Commonly Abused Web Services (#3587) 
excluding top noisy patterns :

- Microsoft signed binaries connecting to graph.microsoft.com and sharepoint.com
- Slack, Dropbox and other signed binaries.
- github.com (removed), most abused is rawgithub dns.question.name for ingress-script/payload download
 2024-04-11 08:11:28 -03:00
Jonhnathan aa0cc42ff6 [Rule Tuning] Svchost spawning Cmd (#3578) 
Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
 2024-04-08 07:50:20 -03:00
Mirko Bez 153657029b Add filebeat-* index pattern to rules based on system.auth dataset (#3561) 
Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
 2024-04-03 11:27:31 +02:00
shashank-elastic 0e2eb5a84c Fix minstack version for O365 prod rules (#3565) 2024-04-02 21:33:18 +05:30
Jonhnathan 4ab7c9b178 [Rule Tuning] First Time Seen Commonly Abused Remote Access Tool Execution (#3545) 
* [Rule Tuning] First Time Seen Commonly Abused Remote Access Tool Execution

* Update command_and_control_new_terms_commonly_abused_rat_execution.toml

* Update command_and_control_new_terms_commonly_abused_rat_execution.toml

* Update command_and_control_new_terms_commonly_abused_rat_execution.toml

* Update rules/windows/command_and_control_new_terms_commonly_abused_rat_execution.toml

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

---------

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
 2024-04-02 11:06:08 -03:00
Samirbous 69173872da [Tuning] Connection to Commonly Abused Web Services (#3425) 
* Update command_and_control_common_webservices.toml

* Update command_and_control_common_webservices.toml

---------

Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
 2024-04-02 14:41:10 +01:00
Samirbous f025616cbd [New Rule] Suspicious Access to LDAP Attributes (#2504) 
* Create discovery_high_number_ad_properties.toml

* Update discovery_high_number_ad_properties.toml

* Update rules/windows/discovery_high_number_ad_properties.toml

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

* Update rules/windows/discovery_high_number_ad_properties.toml

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

* fixed tags; moved note to setup, updated date

* Update discovery_high_number_ad_properties.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: terrancedejesus <terrance.dejesus@elastic.co>
 2024-04-02 13:57:38 +01:00
Jonhnathan c781376188 [Rule Tuning] Potential Application Shimming via Sdbinst (#3553) 
Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
 2024-04-02 06:35:14 -03:00
Samirbous f2490007e8 [New] Potential Execution via XZBackdoor (#3555) 
* [New] Potential Execution via XZBackdoor

* Update rules/linux/persistence_suspicious_ssh_execution_xzbackdoor.toml

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

* Update rules/linux/persistence_suspicious_ssh_execution_xzbackdoor.toml

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

* Update persistence_suspicious_ssh_execution_xzbackdoor.toml

* Update persistence_suspicious_ssh_execution_xzbackdoor.toml

---------

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>
Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
 2024-04-02 05:15:04 +01:00
Jonhnathan b47b91b9ec [Rule Tuning] Tighten up Indexes of Elastic Defend Windows Rules (#3549) 
* [Rule Tuning] Tighten up Indexes of Elastic Defend Windows Rules

* Delete test.pkl

---------

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
 2024-04-01 20:45:12 -03:00
Jonhnathan 67ca13c1ce [Rule Tuning] Replace KQL exceptions for Query DSL Exceptions (#3505) 
* [Rule Tuning] Replace KQL exceptions for Query DSL Exceptions

* update min_stack

* build out schema in more detail for Filters

* Update detection_rules/rule.py

Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>

* Remove enum for definition

* remove unused import

* remove $state store

* transform state

* add call to super

* add return type hint

* use dataclass metadata

* use Literal type

---------

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
Co-authored-by: Mika Ayenson <Mika.ayenson@elastic.co>
Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>
 2024-04-01 17:44:50 -03:00
Susan 400a84628e Update setup guide for ML integration packages (#3475) 
* Add more detail to ingest pipeline install

* Add more info to anomaly detection setup

* Update draft

* Fix typo

* Bulk add doc updates

* Update rules/integrations/problemchild/defense_evasion_ml_rare_process_for_a_host.toml

Co-authored-by: Kirti Sodhi <109447885+sodhikirti07@users.noreply.github.com>

* Address Kseniia feedback

* Update updated_date per review feedback

---------

Co-authored-by: Kirti Sodhi <109447885+sodhikirti07@users.noreply.github.com>
Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>
 2024-04-01 15:02:32 -04:00
Terrance DeJesus d4bf04256d [Rule Deprecation] Deprecate Remote File Creation on a Sensitive Directory (#3477) 
* deprecating

* adjusted matury tag; updated dates
 2024-04-01 11:01:20 -04:00
Jonhnathan 218c3bead6 [New Rules] Potential PowerShell Pass-the-Hash/Relay Script (#3543) 
* [New Rules] Potential PowerShell Pass-the-Hash/Relay Script

* Update credential_access_posh_relay_tools.toml

* Update execution_posh_hacktool_functions.toml

* Update credential_access_posh_relay_tools.toml

* Update credential_access_posh_relay_tools.toml

---------

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
 2024-03-28 07:05:35 -03:00
Jonhnathan 954a93c3b4 [New Rule] Creation of a DNS-Named Record (#3539) 
* [New Rule] Creation of a DNS-Named Record

* Update credential_access_dnsnode_creation.toml

* Update rules/windows/credential_access_dnsnode_creation.toml
 2024-03-27 18:21:07 -03:00
Jonhnathan 67e9ebf8e1 [New Rule] Potential ADIDNS Poisoning via Wildcard Record Creation (#3535) 
* [New Rule] Potential ADIDNS Poisoning via Wildcard Record Creation

* Update credential_access_adidns_wildcard.toml

---------

Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
 2024-03-27 10:07:23 -03:00
Samirbous d7aff43621 [New] Suspicious Execution via ScreenConnect (#3541) 
* [New] Suspicious Execution via ScreenConnect

- Suspicious ScreenConnect Client Child Process (limited to known suspicious patterns)
- ScreenConnect Server Spawning Suspicious Processes (webshell access via ScreenConnect server)

* Update command_and_control_screenconnect_childproc.toml

* Update rules/windows/initial_access_webshell_screenconnect_server.toml

* Update rules/windows/command_and_control_screenconnect_childproc.toml

* Update rules/windows/command_and_control_screenconnect_childproc.toml

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

* Update command_and_control_screenconnect_childproc.toml

* Update command_and_control_screenconnect_childproc.toml

---------

Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
 2024-03-27 11:52:47 +00:00
ALEXANDER MA COTE 138447221f fix typo in lateral_movement_remote_services.toml (#3538) 2024-03-27 11:38:57 +01:00
Ruben Groenewoud 760b99bcc1 [Rule Tuning] Scheduled Task Activity via pwsh (#3534) 2024-03-26 14:45:04 +01:00
Samirbous fc76a8bcb5 [New] Suspicious JetBrains TeamCity Child Process (#3532) 
* [New] Suspicious JetBrains TeamCity  Child Process

* Update initial_access_exploit_jetbrains_teamcity.toml

* Update initial_access_exploit_jetbrains_teamcity.toml

* Update initial_access_exploit_jetbrains_teamcity.toml

* Update initial_access_exploit_jetbrains_teamcity.toml
 2024-03-25 16:32:56 +00:00
Jonhnathan 779fa7710d [New Rules] Veeam Credential Access DRs (#3516) 
* [New Rules] Veeam Credential Access DRs

* bump

* Update credential_access_veeam_commands.toml

* Update credential_access_veeam_backup_dll_imageload.toml

* Update rules/windows/credential_access_veeam_backup_dll_imageload.toml

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

* Update credential_access_veeam_commands.toml

* Update rules/windows/credential_access_veeam_backup_dll_imageload.toml

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

---------

Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
 2024-03-21 10:00:48 -03:00
Ruben Groenewoud a6028b43b3 [Rule Tuning] Potential Reverse Shell via UDP (#3508) 2024-03-21 13:48:41 +01:00
Mika Ayenson 07abc19932 [Rule Tuning] SMTP on Port 26/TCP (#3521) 2024-03-19 15:55:25 -05:00
Terrance DeJesus f6e79944f2 [Rule Tuning] Tuning 'First Time Seen AWS Secret Value Accessed in Secrets Manager' (#3494) 
* tuning 'First Time Seen AWS Secret Value Accessed in Secrets Manager'

* reverting lookback window

* missing word in description
 2024-03-15 19:08:28 -04:00
Susan a4ecfe3ccf Beaconing - Add whitelist to rules, with some more processes (#3497) 
* Add whitelist to rules, with some more processes

* Update rules exceptionlist

* Update exceptions

---------

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
 2024-03-14 15:51:02 -04:00
Jonhnathan c610e19114 [Rule Tuning] Guided Onboarding Rule (#3502) 
* [Rule Tuning] Guided Onboarding Rule

* Update guided_onboarding_sample_rule.toml

* Revert "Update guided_onboarding_sample_rule.toml"

This reverts commit 18721277df7416534440a4708fa3b060f2775a27.

* Update guided_onboarding_sample_rule.toml

* Update guided_onboarding_sample_rule.toml

---------

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
 2024-03-14 10:59:31 -03:00
Ruben Groenewoud 4179180fcb [New Rules] mprotect() RWX Binary Execution (#3507) 
* [New Rules] mprotect() RWX Binary Execution

* Added rule names

* Update execution_netcon_from_rwx_mem_region_binary.toml

* Update execution_unknown_rwx_mem_region_binary_executed.toml

* Update execution_unknown_rwx_mem_region_binary_executed.toml

* Update execution_netcon_from_rwx_mem_region_binary.toml

* Update execution_netcon_from_rwx_mem_region_binary.toml
 2024-03-13 22:11:44 +01:00
Jonhnathan f5254f3b5e [Rule Tuning] Improve Compatibility in WIndows Detection Rules - Part 1 (#3501) 
* Initial commit

* Date bump
 2024-03-13 10:27:44 -03:00
Ruben Groenewoud 9f8638a004 [Tuning] event.action and event.type change (#3495) 
Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
 2024-03-13 10:11:21 +01:00
Jonhnathan 458e67918a [Security Content] Small tweaks on the setup guides (#3308) 
* [Security Content] Small tweaks on the setup guides

* Additional Fixes

* Avoid touching deprecated rules
 2024-03-11 09:09:40 -03:00
Jonhnathan edf4da8526 [Rule Tuning] DR Performance-Poor Rules (#3399) 
* [Rule Tuning] DR Performance

* .

* Update rules/cross-platform/lateral_movement_remote_file_creation_in_sensitive_directory.toml

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

* Update rules/windows/persistence_registry_uncommon.toml

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

* Update lateral_movement_remote_file_creation_in_sensitive_directory.toml

* Update lateral_movement_remote_file_creation_in_sensitive_directory.toml

* Update persistence_startup_folder_scripts.toml

---------

Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
 2024-03-11 08:50:42 -03:00
Leandro Maciel 709cfddcbe fix: correct the provider for the create, delete and modify routes in EC2 VPCs (#3500) 2024-03-08 16:01:27 -03:00
Ruben Groenewoud a438052ff3 [Tuning] Linux Cross-Platform Tuning - Part 1 (#3468) 
* [Tuning] Linux Cross-Platform Tuning - Part 1

* Update defense_evasion_deletion_of_bash_command_line_history.toml

* Update defense_evasion_deletion_of_bash_command_line_history.toml

* Update defense_evasion_deletion_of_bash_command_line_history.toml

* Update defense_evasion_deletion_of_bash_command_line_history.toml

---------

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
 2024-03-07 18:20:55 +01:00
Ruben Groenewoud 9c4ba4559d [Tuning] Linux DR Tuning - Part 12 (#3464) 
* [Tuning] Linux DR Tuning - Part 12

* Update persistence_shared_object_creation.toml

* Update privilege_escalation_dac_permissions.toml

* Update privilege_escalation_enlightenment_window_manager.toml

* Update privilege_escalation_enlightenment_window_manager.toml

* Min stack rule-bending test

* formatting fix

* Revert "Merge branch 'linux-dr-tuning-12' of https://github.com/elastic/detection-rules into linux-dr-tuning-12"

This reverts commit 0170cddd905b4b983f8413eebbc11c9c7b3719ce, reversing
changes made to 29d4a747603faf0ac7c2d502786533b0cd93a5d5.

* Revert "Min stack rule-bending test"

This reverts commit 29d4a747603faf0ac7c2d502786533b0cd93a5d5.

* Update privilege_escalation_enlightenment_window_manager.toml

* Update privilege_escalation_chown_chmod_unauthorized_file_read.toml

---------

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
 2024-03-07 18:09:38 +01:00
Ruben Groenewoud 3fd0358b73 [Tuning] Linux BBR Tuning - Part 1 (#3469) 
* [Tuning] Linux BBR Tuning - Part 1

* [Tuning] Linux BBR Tuning - Part 1

* Update defense_evasion_processes_with_trailing_spaces.toml

* Update defense_evasion_processes_with_trailing_spaces.toml

* One more tuning

* Update collection_linux_suspicious_clipboard_activity.toml

---------

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
 2024-03-07 17:19:12 +01:00
Ruben Groenewoud ed4a7fc15b [Tuning] Linux DR Tuning - Part 14 (#3467) 
* [Tuning] Linux DR Tuning - Part 14

* Update privilege_escalation_sudo_cve_2019_14287.toml

---------

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
 2024-03-07 16:45:47 +01:00