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patel-bhavin
70 lines
2.0 KiB
YAML
70 lines
2.0 KiB
YAML
name: MacOS plutil
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id: c11f2b57-92c1-4cd2-b46c-064eafb833ac
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version: 2
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date: '2022-05-26'
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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: Detect usage of plutil to modify plist files. Adversaries can modiy plist files to executed binaries or add command line
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arguments. Plist files in auto-run locations are executed upon user logon or system startup.
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search: '`osquery` name=es_process_events columns.path=/usr/bin/plutil
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| rename columns.* as *
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| stats count min(_time) as firstTime max(_time) as lastTime by username host cmdline pid path parent signing_id
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| rename username as User, cmdline as process, path as process_path
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| `security_content_ctime(firstTime)`| `security_content_ctime(lastTime)`
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| `macos_plutil_filter`'
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how_to_implement: This detection uses osquery and endpoint security on MacOS.
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Follow the link in references, which describes how to setup process auditing in MacOS
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with endpoint security and osquery.
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known_false_positives: Administrators using plutil to change plist files.
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references:
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- https://osquery.readthedocs.io/en/stable/deployment/process-auditing/
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tags:
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analytic_story:
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- Living Off The Land
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asset_type: Endpoint
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cis20:
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- CIS 3
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- CIS 5
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- CIS 16
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confidence: 50
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context:
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- Source:Endpoint
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- Stage:Execution
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1647/atomic_red_team/osquery.log
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impact: 50
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kill_chain_phases:
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- Actions on Objectives
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message: plutil are executed on $host$ from $user$
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mitre_attack_id:
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- T1647
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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: process
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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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- columns.cmdline
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- columns.pid
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- columns.parent
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- columns.path
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- columns.signing_id
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- columns.username
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- host
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risk_score: 25
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security_domain: endpoint
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