Authorization Plugin Modification

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Authorization plugins are used to extend the authorization services API and implement mechanisms that are not natively supported by the OS, such as multi-factor authentication with third party software. Adversaries may abuse this feature to persist and/or collect clear text credentials as they traverse the registered plugins during user logon.

Rule type: query

Rule indices:

  • auditbeat-*
  • logs-endpoint.events.*

Severity: medium

Risk score: 47

Runs every: 5 minutes

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
  • Persistence

Version: 100 (version history)

Added (Elastic Stack release): 7.12.0

Last modified (Elastic Stack release): 8.5.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

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event.category:file and not event.type:deletion and
file.path:(/Library/Security/SecurityAgentPlugins/* and not
/Library/Security/SecurityAgentPlugins/TeamViewerAuthPlugin.bundle/*)
and not process.name:shove and process.code_signature.trusted:true

Threat mapping

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Framework: MITRE ATT&CKTM

Rule version history

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Version 100 (8.5.0 release)
  • Formatting only
Version 3 (8.4.0 release)
  • Updated query, changed from:

    event.category:file and not event.type:deletion and
    file.path:(/Library/Security/SecurityAgentPlugins/* and not /Library
    /Security/SecurityAgentPlugins/TeamViewerAuthPlugin.bundle/Contents/*)