Techniques › T1056.003 › AN1321
AN1321 Analytic 1321
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Detects tampering of IIS-based login pages (e.g., default.aspx, login.aspx) tied to VPN, OWA, or SharePoint via script injection or unexpected editor processes modifying web roots.</p>
- Detects
- T1056.003 Web Portal Capture
- Part of
- DET0480 Detection of Credential Harvesting via Web Portal Modification
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=11 | DC0039 File Creation |
| WinEventLog:iis | IIS Logs | 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 |
|---|---|
FilePath | Define path to monitored IIS web root (e.g., C:\inetpub\wwwroot\login.aspx) |
ProcessName | Exclude legitimate updates (e.g., msdeploy.exe) and alert on suspicious editors (e.g., notepad.exe, certutil.exe) |