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P4T12ICK
75 lines
2.2 KiB
YAML
75 lines
2.2 KiB
YAML
name: Suspicious PlistBuddy Usage
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id: c3194009-e0eb-4f84-87a9-4070f8688f00
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version: 1
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date: '2021-02-22'
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author: Michael Haag, Splunk
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status: experimental
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type: TTP
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description: 'The following analytic identifies the use of a native MacOS utility,
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PlistBuddy, creating or modifying a properly list (.plist) file. In the instance
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of Silver Sparrow, the following commands were executed:\
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- PlistBuddy -c "Add :Label string init_verx" ~/Library/Launchagents/init_verx.plist
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\
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- PlistBuddy -c "Add :RunAtLoad bool true" ~/Library/Launchagents/init_verx.plist
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\
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- PlistBuddy -c "Add :StartInterval integer 3600" ~/Library/Launchagents/init_verx.plist
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\
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- PlistBuddy -c "Add :ProgramArguments array" ~/Library/Launchagents/init_verx.plist
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\
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- PlistBuddy -c "Add :ProgramArguments:0 string /bin/sh" ~/Library/Launchagents/init_verx.plist
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\
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- PlistBuddy -c "Add :ProgramArguments:1 string -c" ~/Library/Launchagents/init_verx.plist
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\
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Upon triage, capture the property list file being written to disk and review for
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further indicators. Contain the endpoint and triage further.'
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data_source:
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- Sysmon Event ID 1
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search:
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selection1:
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CommandLine:
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- '*true*'
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- '*RunAtLoad*'
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- '*LaunchAgents*'
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Image|endswith: PlistBuddy
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condition: (selection1)
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how_to_implement: To successfully implement this search you need to be ingesting information
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on process that include the name of the process responsible for the changes from
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your endpoints into the `Endpoint` datamodel in the `Processes` node.
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known_false_positives: Some legitimate applications may use PlistBuddy to create or
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modify property lists and possibly generate false positives. Review the property
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list being modified or created to confirm.
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references:
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- https://www.marcosantadev.com/manage-plist-files-plistbuddy/
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tags:
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analytic_story:
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- Silver Sparrow
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asset_type: Endpoint
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confidence: 50
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impact: 50
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message: tbd
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mitre_attack_id:
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- T1543.001
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- T1543
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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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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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risk_score: 25
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security_domain: endpoint
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