Modification of Safari Settings via Defaults Commandedit
Identifies changes to the Safari configuration using the built-in defaults command. Adversaries may attempt to enable or disable certain Safari settings, such as enabling JavaScript from Apple Events to ease in the hijacking of the users browser.
Rule type: query
Rule indices:
- auditbeat-*
- logs-endpoint.events.*
Severity: medium
Risk score: 47
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Elastic
- Host
- macOS
- Threat Detection
- Defense Evasion
Version: 101
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule queryedit
event.category:process and event.type:start and
process.name:defaults and process.args:
(com.apple.Safari and write and not
(
UniversalSearchEnabled or
SuppressSearchSuggestions or
WebKitTabToLinksPreferenceKey or
ShowFullURLInSmartSearchField or
com.apple.Safari.ContentPageGroupIdentifier.WebKit2TabsToLinks
)
)
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Impair Defenses
- ID: T1562
- Reference URL: https://attack.mitre.org/techniques/T1562/
-
Sub-technique:
- Name: Disable or Modify Tools
- ID: T1562.001
- Reference URL: https://attack.mitre.org/techniques/T1562/001/