Techniques › T1041 › AN0988
AN0988 Analytic 0988
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Identifies suspicious outbound traffic volume mismatches from processes that typically do not generate network activity, particularly over C2 protocols like HTTPS, DNS, or custom TCP/UDP ports, following file or data access.</p>
- Detects
- T1041 Exfiltration Over C2 Channel
- Part of
- DET0348 Detection Strategy for Exfiltration Over C2 Channel
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=1 | DC0032 Process Creation |
| WinEventLog:Sysmon | EventCode=3, 22 | DC0082 Network Connection Creation |
| NSM:Flow | Flow/PCAP analysis for outbound payloads | DC0085 Network Traffic Content |
| WinEventLog:Security | EventCode=4663, 4670, 4656 | DC0055 File Access |
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 |
|---|---|
DataVolumeThreshold | Set threshold for outbound transfer size exceeding typical C2 traffic (e.g., >1MB in <5min). |
KnownBenignProcesses | List of approved processes that may exhibit high outbound traffic (e.g., updates). |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2018-4878 | Adobe Flash Player | Mapped |
| CVE-2019-0604 | Microsoft SharePoint | Mapped |
| CVE-2019-18935 | Progress Telerik UI for ASP.NET AJAX | Mapped |
| CVE-2023-1389 | TP-Link Archer AX21 | Mapped |
| CVE-2023-2868 | Barracuda Networks Email Security Gateway (ESG) Appliance | Mapped |
| CVE-2023-38831 | RARLAB WinRAR | Mapped |
| CVE-2023-5631 | Roundcube Webmail | Mapped |
| CVE-2024-27443 | Synacor Zimbra Collaboration Suite (ZCS) | Mapped |
| CVE-2024-4577 | PHP Group PHP | Mapped |
| CVE-2024-55550 | Mitel MiCollab | Mapped |
| CVE-2025-32756 | Fortinet Multiple Products | Mapped |
| CVE-2025-33053 | Microsoft Windows | Mapped |