Techniques › T1110.001 › AN1521
AN1521 Analytic 1521
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Series of authentication failures (Event ID 4625) targeting the same or similar user accounts over time from one or more remote IPs</p>
- Detects
- T1110.001 Password Guessing
- Part of
- DET0551 Password Guessing via Multi-Source Authentication Failure Correlation
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=4625 | DC0002 User Account Authentication |
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 |
|---|---|
TimeWindow | Defines the period in which multiple failed attempts are aggregated (e.g., 10 minutes) |
UsernamePattern | Filter for common account naming conventions, e.g., service accounts or administrator variants |
SourceIPThreshold | Limit on unique IPs trying to authenticate against a single account |