Delete fsutil_zeroing_file.yml

detections/endpoint/fsutil_zeroing_file.yml

@@ -1,59 +0,0 @@
-name: Fsutil Zeroing File
-id: 4e5e024e-fabb-11eb-8b8f-acde48001122
-version: 1
-date: '2021-08-11'
-author: Teoderick Contreras, Splunk
-type: batch
-datamodel:
-- Endpoint
-description: This search is to detect a suspicious fsutil process to zeroing a target
-  file. This technique was seen in lockbit ransomware where it tries to zero out its
-  malware path as part of its defense evasion after encrypting the compromised host.
-search: '| tstats `security_content_summariesonly` count values(Processes.process)
-  as process values(Processes.parent_process) as parent_process min(_time) as firstTime
-  max(_time) as lastTime from datamodel=Endpoint.Processes where Processes.process_name=fsutil.exe
-  Processes.process="*setzerodata*" by Processes.user Processes.process_name Processes.parent_process_name
-  Processes.dest  Processes.process Processes.parent_process | `drop_dm_object_name(Processes)`
-  | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `fsutil_zeroing_file_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
-  Sysmon TA.
-known_false_positives: unknown
-references:
-- https://app.any.run/tasks/e0ac072d-58c9-4f53-8a3b-3e491c7ac5db/
-tags:
-  analytic_story:
-  - Ransomware
-  dataset:
-  - https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1070/fsutil_file_zero/windows-sysmon.log
-  kill_chain_phases:
-  - Exploitation
-  mitre_attack_id:
-  - T1070
-  product:
-  - Splunk Enterprise
-  - Splunk Enterprise Security
-  - Splunk Cloud
-  required_fields:
-  - _time
-  - Processes.user
-  - Processes.process_name
-  - Processes.parent_process_name
-  - Processes.dest
-  - Processes.process
-  - Processes.parent_process
-  security_domain: endpoint
-  impact: 60
-  confidence: 90
-  risk_score: 54
-  context:
-  - Source:Endpoint
-  - Stage:Defense Evasion
-  message: Possible file data deletion on $dest$ using $process$
-  observable:
-  - name: dest
-    type: Endpoint
-    role:
-    - Victim
-  automated_detection_testing: passed