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https://github.com/splunk/security_content
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pyth0n1c
89 lines
3.0 KiB
YAML
89 lines
3.0 KiB
YAML
name: Creation of Shadow Copy
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id: eb120f5f-b879-4a63-97c1-93352b5df844
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version: 1
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date: '2019-12-10'
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author: Patrick Bareiss, Splunk
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type: TTP
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datamodel:
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- Endpoint
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description: Monitor for signs that Vssadmin or Wmic has been used to create a shadow
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copy.
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search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
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as lastTime from datamodel=Endpoint.Processes where (Processes.process_name=vssadmin.exe
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Processes.process=*create* Processes.process=*shadow*) OR (Processes.process_name=wmic.exe
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Processes.process=*shadowcopy* Processes.process=*create*) by Processes.dest Processes.user
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Processes.process_name Processes.process Processes.parent_process Processes.process_id
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Processes.parent_process_id | `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)`|
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`security_content_ctime(lastTime)` | `creation_of_shadow_copy_filter`'
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how_to_implement: You must be ingesting endpoint data that tracks process activity,
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including parent-child relationships from your endpoints, to populate the Endpoint
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data model in the Processes node. The command-line arguments are mapped to the "process"
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field in the Endpoint data model.
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known_false_positives: Legitimate administrator usage of Vssadmin or Wmic will create
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false positives.
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references:
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- https://2017.zeronights.org/wp-content/uploads/materials/ZN17_Kheirkhabarov_Hunting_for_Credentials_Dumping_in_Windows_Environment.pdf
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tags:
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analytic_story:
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- Credential Dumping
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asset_type: Endpoint
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cis20:
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- CIS 8
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- CIS 16
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confidence: 90
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context:
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- Source:Endpoint
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- Stage:Credential Access
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1003.003/atomic_red_team/windows-sysmon.log
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1003.003/atomic_red_team/crowdstrike_falcon.log
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impact: 90
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kill_chain_phases:
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- Actions on Objectives
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message: An instance of $parent_process_name$ spawning $process_name$ was identified
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on endpoint $dest$ by user $user$ attempting to create a shadow copy to perform
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offline password cracking.
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mitre_attack_id:
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- T1003.003
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- T1003
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nist:
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- DE.CM
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observable:
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- name: user
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type: User
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role:
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- Victim
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- name: dest
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type: Hostname
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role:
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- Victim
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- name: parent_process
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type: Process
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role:
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- Parent Process
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- name: process_name
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type: Process
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role:
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- Child Process
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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required_fields:
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- _time
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- Processes.dest
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- Processes.user
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- Processes.parent_process_name
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- Processes.parent_process
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- Processes.original_file_name
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- Processes.process_name
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- Processes.process
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- Processes.process_id
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- Processes.parent_process_path
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- Processes.process_path
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- Processes.parent_process_id
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risk_score: 81
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security_domain: endpoint
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supported_tas:
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- Splunk_TA_microsoft_sysmon
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