Techniques › T1199 › AN1344
AN1344 Analytic 1344
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Behavioral chain: (1) a login from a third-party account or untrusted source network establishes an interactive/remote session; (2) the session acquires elevated privileges or accesses sensitive resources atypical for that account; (3) subsequent lateral movement or data access occurs from the same session/device. Correlate Windows logon events, token elevation/privileged use, and resource access with third-party context.</p>
- Detects
- T1199 Trusted Relationship
- Part of
- DET0488 Detect abuse of Trusted Relationships (third-party and delegated admin access)
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=4624, 4648 | DC0067 Logon Session Creation |
| WinEventLog:Security | EventCode=4776, 4771, 4770 | DC0088 Logon Session Metadata |
| WinEventLog:Sysmon | EventCode=3, 22 | DC0082 Network Connection Creation |
| WinEventLog:Security | EventCode=4663, 4670, 4656 | 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 |
|---|---|
ThirdPartyCIDRs | Ranges used by MSPs/contractors/VPN egress; used to enrich logons and network flows. |
ExpectedAdminHosts | Servers where third-party admins are allowed; deviations raise risk. |
TimeWindow | Correlation window linking logon → elevation → access (e.g., 30–120 minutes). |
HighValueResources | File shares/AD objects/servers that should never be touched by third-party sessions. |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2024-53704 | SonicWall SonicOS | Mapped |