AN1264: Analytic 1264
Burst of failed authentications with rotating usernames against loginwindow or remote management service using reused breached credentials
Analyst context for executives and security teams
AN1264 is a macOS-focused detection analytic concept for spotting bursts of failed logins where usernames rotate against loginwindow or a remote management service, consistent with attempts to reuse breached credentials. For leaders, the practical value is determining whether the organization can see credential-attack pressure against Macs before it becomes an account compromise or remote-access incident.
Executive priority
Prioritize this as an identity and endpoint visibility validation item for macOS environments, especially where remote management is enabled. The key business question is whether security teams can prove they collect and review failed authentication patterns on Macs, correlate them to account and source context, and escalate quickly enough to protect business continuity, privileged access, and audit evidence. Because ATT&CK provides no tactic mapping, relationships, or detection logic here, treat it as a coverage-check analytic rather than a complete detection program.
Technical view
Validate that SOC and IR workflows can identify high-volume failed authentication events on macOS loginwindow and remote management services, especially when many usernames are attempted in a short period. Detection engineering should define local thresholds, time windows, source indicators, and username-rotation logic based on normal enterprise authentication behavior. Analysts should distinguish this pattern from benign causes such as misconfigured management tools, stale credentials, onboarding scripts, or password-change fallout.
Likely telemetry
- macOS authentication logs showing failed login attempts
- loginwindow-related authentication failure events
- Remote management service authentication failure events on macOS
- Username values associated with failed attempts
- Source host, source address, or management-service connection metadata where available
Detection direction
- Confirm that failed authentication events from macOS loginwindow and remote management services are actually collected, normalized, and retained.
- Tune for bursts of failures with rotating usernames rather than only repeated failures for a single account.
- Baseline legitimate administrative and device-management activity to reduce false positives from misconfiguration or scheduled tooling.
- Correlate failed-authentication bursts with asset criticality, remote management exposure, and identity context to support triage.
- Document blind spots where macOS endpoints, remote management services, or local authentication logs are not onboarded to central monitoring.
Mitigation priorities
- Review whether remote management services are required on macOS systems and restrict exposure where possible.
- Strengthen identity controls for accounts usable on macOS systems, including password hygiene and appropriate access scoping.
- Ensure macOS endpoint logging and authentication telemetry are centrally collected for SOC and IR use.
- Establish response playbooks for credential-attack indicators, including account review, source investigation, and affected asset validation.
- Use this analytic as compliance evidence only after confirming telemetry coverage, alert logic, triage workflow, and retention requirements in the local environment.
Analyst notes and limits
The supplied object is a detection analytic, not a technique description. Its useful defensive interpretation is a credential-attack visibility check for macOS loginwindow and remote management authentication failures. The phrase 'reused breached credentials' is included in the official description, but the supplied fields do not provide attribution, campaign context, or confirmed exploitation details.
Official detection text, tactics, relationships, aliases, and labels were not supplied. Thresholds, time windows, affected services, log source names, and response actions must be validated against the local macOS fleet and remote management configuration. No claims of active exploitation, guaranteed detection, or non-macOS platform coverage are supported by the provided object.
Analytic 1264
Burst of failed authentications with rotating usernames against loginwindow or remote management service using reused breached credentials
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
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Imported snapshots across ATT&CK releases (1)
| Release | Bundle imported | Object version | Modified | Status | Raw hash |
|---|---|---|---|---|---|
| 19.1 | 1.0 | Current bundle | 3d10e6dd4a77… |
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 AN1264Open source URL
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