AN0704: Analytic 0704
Monitor system APIs such as CFNetwork and SecureTransport for anomalies in transmitted data streams. Detect mismatches in file hashes or SSL/TLS downgrade attempts that enable manipulation of transmitted data.
Analyst context for executives and security teams
This analytic matters because it focuses on macOS network data integrity: watching system APIs such as CFNetwork and SecureTransport for signs that transmitted data is being altered, downgraded, or otherwise manipulated in transit. For leaders, the decision value is whether macOS endpoints have enough visibility to prove that encrypted communications remain trustworthy, especially where business workflows depend on secure data exchange.
Executive priority
Prioritize this as a validation point for macOS endpoint visibility and secure communications assurance. The business question is not simply whether TLS is used, but whether security teams can detect suspicious API-level network behavior, file hash mismatches, or SSL/TLS downgrade attempts that could undermine confidentiality or integrity. This can support incident response readiness, compliance evidence for secure transmission controls, and risk discussions around sensitive data movement on macOS systems.
Technical view
SOC and detection teams should confirm whether macOS telemetry can expose CFNetwork and SecureTransport activity at a level useful for anomaly detection. Since no ATT&CK detection logic is provided, teams should treat AN0704 as a detection engineering requirement: validate collection of relevant API/network events, compare expected versus observed transmitted data characteristics, and investigate evidence of hash mismatches or downgrade behavior. Because no tactics or relationships are supplied, this should be mapped locally to the organization’s macOS threat model and data-flow risks.
Likely telemetry
- macOS endpoint telemetry involving CFNetwork usage
- macOS endpoint telemetry involving SecureTransport usage
- Network connection metadata from macOS systems
- SSL/TLS negotiation details where available
- Evidence of SSL/TLS downgrade attempts
Detection direction
- Validate whether existing macOS endpoint and network monitoring can observe CFNetwork and SecureTransport-related behavior rather than only generic connection logs.
- Develop or tune analytics for anomalies in transmitted data streams, including unexpected integrity mismatches and suspicious SSL/TLS downgrade indicators.
- Account for false positives from legacy services, proxies, inspection infrastructure, compatibility fallbacks, or misconfigured applications that may affect TLS behavior.
- Use local baselines for normal macOS application network behavior because the ATT&CK object does not provide a detection query, thresholds, or known-good patterns.
- Confirm that detection output provides enough context for incident responders to identify the process, destination, negotiated protocol characteristics, and affected data flow where available.
Mitigation priorities
- Inventory macOS systems and business applications that rely on CFNetwork, SecureTransport, or sensitive transmitted data flows.
- Ensure secure transmission policies discourage weak protocol negotiation and unnecessary downgrade compatibility where operationally feasible.
- Prioritize telemetry coverage before alerting: confirm endpoint, network, and integrity evidence is collected and retained.
- Use integrity checks, hash validation, and TLS configuration review as supporting controls for high-risk macOS data flows.
- Document monitoring and review procedures as compliance evidence for secure communications and incident response readiness.
Analyst notes and limits
AN0704 is a detection analytic, not a technique. The supplied object is limited to macOS and describes monitoring CFNetwork and SecureTransport for anomalous transmitted data, file hash mismatches, and SSL/TLS downgrade attempts. No ATT&CK tactics, related techniques, analytic logic, relationships, or detection text were supplied, so implementation should be driven by local telemetry availability and macOS application behavior.
This take is constrained to the supplied STIX fields and external reference. It does not assert active exploitation, adversary attribution, detection coverage, business impact, or applicability beyond macOS. The object does not provide query logic, data source mappings, severity, thresholds, or relationship context.
Analytic 0704
Monitor system APIs such as CFNetwork and SecureTransport for anomalies in transmitted data streams. Detect mismatches in file hashes or SSL/TLS downgrade attempts that enable manipulation of transmitted data.
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 | f667c4f76572… |
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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mitre-attack AN0704Open source URL
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