diff --git a/detections/endpoint/disable_windows_smartscreen_protection.yml b/detections/endpoint/disable_windows_smartscreen_protection.yml index 3e85bdad5a..b127627da0 100644 --- a/detections/endpoint/disable_windows_smartscreen_protection.yml +++ b/detections/endpoint/disable_windows_smartscreen_protection.yml @@ -6,26 +6,26 @@ author: Teoderick Contreras, Splunk type: batch datamodel: - Endpoint -description: The following search identifies a modification of registry to disable the smartscreen protection of windows machine. - This is windows feature provide an early warning system against website that might engage in phishing attack or malware distribution. - This modification are seen in RAT malware to cover their tracks upon downloading other of its component or other payload. -search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Registry - where Registry.registry_path= "*HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\SmartScreenEnabled" Registry.registry_value_name = "Off" - by Registry.registry_path Registry.registry_key_name Registry.registry_value_name Registry.dest - | `drop_dm_object_name(Registry)` - | `security_content_ctime(firstTime)` - |`security_content_ctime(lastTime)` - | `disable_windows_smartscreen_protection_filter`' +description: The following search identifies a modification of registry to disable + the smartscreen protection of windows machine. This is windows feature provide an + early warning system against website that might engage in phishing attack or malware + distribution. This modification are seen in RAT malware to cover their tracks upon + downloading other of its component or other payload. +search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) + as lastTime from datamodel=Endpoint.Registry where Registry.registry_path= "*HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\SmartScreenEnabled" Registry.registry_value_name + = "Off" by Registry.registry_path Registry.registry_key_name Registry.registry_value_name + Registry.dest | `drop_dm_object_name(Registry)` | `security_content_ctime(firstTime)` + |`security_content_ctime(lastTime)` | `disable_windows_smartscreen_protection_filter`' how_to_implement: To successfully implement this search you need to be ingesting information on process that include the name of the process responsible for the changes from - your endpoints into the `Endpoint` datamodel in the `Registry` node. Also make sure that this registry was included in your config - files ex. sysmon config to be monitored. + your endpoints into the `Endpoint` datamodel in the `Registry` node. Also make sure + that this registry was included in your config files ex. sysmon config to be monitored. known_false_positives: admin or user may choose to disable this windows features. references: - https://tccontre.blogspot.com/2020/01/remcos-rat-evading-windows-defender-av.html tags: analytic_story: - - Windows Defense Evasion Tactics + - Windows Defense Evasion Tactics kill_chain_phases: - Exploitation mitre_attack_id: @@ -41,4 +41,9 @@ tags: - Registry.user - Registry.dest - Registry.registry_value_nam - security_domain: endpoint \ No newline at end of file + security_domain: endpoint + automated_detection_testing: passed + dataset: + - https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-security.log + - https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-system.log + - https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-sysmon.log