Techniques › T1048.003 › AN0423
AN0423 Analytic 0423
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Detects data access or staging events followed by outbound data flows using unencrypted protocols (e.g., FTP, HTTP) initiated by unexpected processes or to rare destinations.</p>
- Detects
- T1048.003 Exfiltration Over Unencrypted Non-C2 Protocol
- Part of
- DET0149 Detection of Exfiltration Over Unencrypted Non-C2 Protocol
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 |
|---|---|---|
| WinEventLog:Sysmon | EventCode=3, 22 | DC0082 Network Connection Creation |
| WinEventLog:Sysmon | EventCode=1 | DC0032 Process Creation |
| WinEventLog:Security | EventCode=4663, 4670, 4656 | DC0055 File Access |
| NSM:Flow | http.log, ftp.log | 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 |
|---|---|
UnencryptedProtocolList | Set of protocols considered suspicious for outbound data exfiltration (e.g., FTP, HTTP). |
DataTransferSizeThreshold | Defines what amount of outbound data is considered abnormal for a host/user. |
ParentProcessDenylist | Processes that should not launch FTP/HTTP clients (e.g., winword.exe launching ftp.exe). |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2021-34473 | Microsoft Exchange Server | Mapped |