Techniques › T1071 › AN1225
AN1225 Analytic 1225
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Detects suspicious usage of common application-layer protocols (e.g., HTTP, HTTPS, DNS, SMB) by abnormal processes, with high outbound byte counts or irregular ports, possibly indicating command and control or data exfiltration.</p>
- Detects
- T1071 Application Layer Protocol
- Part of
- DET0444 Detection of Command and Control Over Application Layer Protocols
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 |
|---|---|---|
| NSM:Flow | http, dns, smb, ssl logs | DC0085 Network Traffic Content |
| WinEventLog:Sysmon | EventCode=3, 22 | DC0082 Network Connection Creation |
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 |
|---|---|
ProtocolList | Limit detection to app-layer protocols of interest: HTTP, DNS, SSL, SMB, RDP |
DataVolumeThreshold | Detects asymmetric communication volume (e.g., >90% outbound) |
UnusualProcessList | Track processes not normally associated with network activity |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2021-45382 | D-Link Multiple Routers | Mapped |