diff --git a/detections/endpoint/suspicious_image_creation_in_appdata_folder.yml b/detections/endpoint/suspicious_image_creation_in_appdata_folder.yml index 76b8e82de4..69de70011c 100644 --- a/detections/endpoint/suspicious_image_creation_in_appdata_folder.yml +++ b/detections/endpoint/suspicious_image_creation_in_appdata_folder.yml @@ -1,7 +1,7 @@ name: Suspicious Image Creation In Appdata Folder id: f6f904c4-1ac0-11ec-806b-acde48001122 -version: 1 -date: '2021-09-21' +version: 2 +date: '2022-07-07' author: Teoderick Contreras, Splunk type: TTP datamodel: @@ -14,14 +14,17 @@ description: This search is to detect a suspicious creation of image in appdata not commonly created by user in this folder path. search: '| tstats `security_content_summariesonly` count FROM datamodel=Endpoint.Processes where Processes.process_name=*.exe Processes.process_path="*\\appdata\\Roaming\\*" - by _time span=1h Processes.process_id Processes.process_name Processes.process Processes.dest - | `drop_dm_object_name(Processes)` | join process_guid, _time [| tstats `security_content_summariesonly` + by _time span=1h Processes.process_id Processes.process_name Processes.process Processes.dest Processes.process_guid + | `drop_dm_object_name(Processes)` + |rename process_guid as proc_guid + |join proc_guid, _time [| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime FROM datamodel=Endpoint.Filesystem - where Filesystem.file_name IN ("*.png","*.jpg","*.bmp","*.gif","*.tiff") Filesystem.file_path - = "*\\appdata\\Roaming\\*" by _time span=1h Filesystem.dest Filesystem.file_create_time - Filesystem.file_name Filesystem.file_path | `drop_dm_object_name(Filesystem)` | - fields _time dest file_create_time file_name file_path process_name process_path - process] | `suspicious_image_creation_in_appdata_folder_filter`' + where Filesystem.file_name IN ("*.png","*.jpg","*.bmp","*.gif","*.tiff") Filesystem.file_path= "*\\appdata\\Roaming\\*" + by _time span=1h Filesystem.dest Filesystem.file_create_time Filesystem.file_name Filesystem.file_path Filesystem.process_guid + | `drop_dm_object_name(Filesystem)` + |rename process_guid as proc_guid | fields _time dest file_create_time file_name file_path process_name process_path + process proc_guid] + | `suspicious_image_creation_in_appdata_folder_filter`' how_to_implement: To successfully implement this search, you need to be ingesting logs with the process name, parent process, and command-line executions from your endpoints. If you are using Sysmon, you must have at least version 6.0.4 of the