Execution with Explicit Credentials via Apple Scripting

edit

Execution with Explicit Credentials via Apple Scripting

edit

Identifies execution of the security_authtrampoline process via the Apple script interpreter (osascript). This occurs when programs use AuthorizationExecute-WithPrivileges from the Security.framework to run another program with root privileges. It should not be run by itself, as this is a sign of execution with explicit logon credentials.

Rule type: eql

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
  • Execution
  • Privilege Escalation

Version: 1

Added (Elastic Stack release): 7.11.0

Rule authors: Elastic

Rule license: Elastic License

Rule query

edit
sequence by host.id with maxspan=5s [process where event.type in
("start", "process_started", "info") and process.name == "osascript"]
by process.pid [process where event.type in ("start",
"process_started") and process.name == "security_authtrampoline"] by
process.ppid

Threat mapping

edit

Framework: MITRE ATT&CKTM