Techniques › T1499.002 › AN0491
AN0491 Analytic 0491
macOS · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Flood of incoming TLS or HTTP(S) connections to macOS-hosted services (e.g., MAMP, Apache), causing high CPU usage and system unresponsiveness.</p>
- Detects
- T1499.002 Service Exhaustion Flood
- Part of
- DET0173 Detection Strategy for Endpoint DoS via Service Exhaustion Flood
Log sources and channels
Exactly as MITRE states them in x_mitre_log_source_references. Where a channel is vague, it is vague in the source; kevmap does not tidy it.
| Log source | Channel | Data component |
|---|---|---|
| macos:unifiedlog | Web service process (e.g., httpd) entering crash loop or consuming excessive CPU | DC0018 Host Status |
| macos:unifiedlog | Rapid incoming TLS handshakes or HTTP requests in quick succession | DC0085 Network Traffic Content |
Mutable elements
Parameters MITRE marks as environment-specific. These are the knobs you are expected to tune; they are why an analytic is not a rule.
| Field | Description |
|---|---|
TLSHandshakeRate | Number of renegotiations per minute considered suspicious |
ServiceCrashFrequency | Threshold of crashes before alerting on instability |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2021-45382 | D-Link Multiple Routers | Mapped |
| CVE-2022-26258 | D-Link DIR-820L | Mapped |