Techniques › T1491 › AN0662
AN0662 Analytic 0662
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Adversary modifies website or application-hosted content via unauthorized file changes or script injections, often by exploiting web servers or CMS access.</p>
- Detects
- T1491 Defacement
- Part of
- DET0238 Defacement via File and Web Content Modification Across Platforms
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:Security | EventCode=4663, 4670, 4656 | DC0061 File Modification |
| WinEventLog:Sysmon | EventCode=1 | DC0032 Process Creation |
| WinEventLog:Application | Unexpected web application errors or CMS logs showing modification to index.html, default.aspx, or other public-facing files | DC0038 Application Log 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 |
|---|---|
target_filenames | Environment-specific naming of defacement-prone files like 'index.html', 'main.css', 'app.js'. |
TimeWindow | Detection based on rapid sequence of file writes and script injections within short time intervals. |