AN1421: Analytic 1421
Detects use of vulnerable kernel extensions or entitlements abused via setuid or AppleScript injection chains.
Analyst context for executives and security teams
AN1421 is a macOS-focused detection analytic for spotting abuse paths that combine vulnerable kernel extensions or risky entitlements with setuid or AppleScript injection chains. For leaders, the value is not just finding a single tool or malware family; it is validating whether the organization can see privilege-related macOS behavior before it becomes an incident-response blind spot.
Executive priority
Prioritize this where macOS systems support sensitive users, administrative workflows, regulated data access, or business-critical operations. The analytic points to control areas that often matter in audits and incident reviews: approved kernel extension use, entitlement governance, privileged execution visibility, and evidence that SOC teams can investigate macOS privilege-abuse chains. Because no detection logic or relationship context is supplied, leaders should treat this as a coverage-validation prompt rather than proof of existing detection capability.
Technical view
For SOC, detection engineering, and IR teams, validate whether macOS telemetry can connect kernel extension activity, entitlement context, setuid execution, and AppleScript-related process behavior into a single investigation trail. The supplied ATT&CK object does not provide a tactic, rule, query, data source list, or related techniques, so teams should map this analytic to local macOS logging and endpoint telemetry and test whether the required evidence is retained, searchable, and correlated.
Likely telemetry
- macOS process execution records, especially privileged or setuid execution
- kernel extension load, use, approval, or inventory evidence
- application entitlement metadata or entitlement-change evidence
- AppleScript execution or script-driven process interaction evidence
- user, parent process, command-line, and privilege context around suspicious chains
Detection direction
- Confirm whether telemetry can correlate vulnerable kernel extension or entitlement-related events with setuid or AppleScript injection-chain behavior on macOS.
- Tune for chained behavior rather than isolated events where possible, because individual setuid use, AppleScript execution, or extension presence may be legitimate in managed environments.
- Establish local baselines for approved kernel extensions, entitled applications, administrative scripts, and privileged helper workflows to reduce false positives.
- Validate retention and searchability of macOS endpoint evidence during incident response; this analytic depends on reconstructing a sequence, not just observing one event.
- Document gaps explicitly, since the official object does not provide detection logic, tactics, or related ATT&CK technique relationships.
Mitigation priorities
- Maintain an approved inventory of macOS kernel extensions and review exceptions for business justification.
- Review applications and workflows that rely on sensitive entitlements, setuid behavior, or AppleScript-driven automation.
- Limit privileged execution paths to documented administrative needs and remove unnecessary legacy or unowned components.
- Ensure endpoint hardening, change control, and monitoring processes cover macOS systems rather than focusing only on server or Windows estates.
- Use findings from telemetry validation to prioritize compensating controls and incident-response playbook updates.
Analyst notes and limits
This is a detection analytic object, not a technique or campaign. The most useful defensive action is to use it as a macOS coverage test: can the SOC prove visibility into vulnerable extension or entitlement abuse chains involving setuid or AppleScript behavior? No relationship context was supplied, so no actor, software, campaign, or technique linkage should be inferred.
The official object supplies a short description, macOS platform scope, and external reference only. It does not include detection logic, ATT&CK tactics, data sources, mitigations, false-positive guidance, or relationships. Local environment baselines are required to determine relevance, alert quality, and priority.
Analytic 1421
Detects use of vulnerable kernel extensions or entitlements abused via setuid or AppleScript injection chains.
How security teams should use this page
Treat this object as behavior context, not an attribution claim. Validate the related groups, software, data sources, and mitigations against official ATT&CK relationships and your own telemetry before making control-coverage decisions.
All related ATT&CK context
No relationships are available in the current normalized data for this object.
Object version and sync metadata
The fields below describe the current mirrored snapshot. When Glexia retains multiple ATT&CK source imports, you can open the table to compare the same object across releases (hashes and MITRE timestamps). For MITRE’s own release notes and roadmap, see ATT&CK resources — Updates .
Imported snapshots across ATT&CK releases (1)
| Release | Bundle imported | Object version | Modified | Status | Raw hash |
|---|---|---|---|---|---|
| 19.1 | 1.0 | Current bundle | 43f03398b04d… |
Mirrored ATT&CK source object
The raw object is retained through the mirrored ATT&CK source bundle and object hash. The raw endpoint returns the exact object from the mirrored bundle when available.
External references and citations
MITRE external references are preserved separately from Glexia analysis so citations remain traceable to their original source records.
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[1]
mitre-attack AN1421Open source URL
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