Techniques › T1648 › AN1053
AN1053 Analytic 1053
IaaS · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Correlate creation or modification of serverless functions (e.g., AWS Lambda, GCP Cloud Functions, Azure Functions) with anomalous IAM role assignments or permissions escalation events. Detect subsequent executions of newly created functions that perform unexpected actions such as spawning outbound network connections, accessing sensitive resources, or creating additional credentials.</p>
- Detects
- T1648 Serverless Execution
- Part of
- DET0374 Detection Strategy for Serverless Execution (T1648)
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 |
|---|---|---|
| AWS:CloudTrail | CreateFunction / UpdateFunctionConfiguration: Function creation, role assignment, or configuration change events | DC0069 Cloud Service Modification |
| AWS:CloudTrail | InvokeFunction: Unexpected or repeated invocation of functions not tied to known workflows | 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 |
|---|---|
RoleScope | Which IAM roles or privileges are considered sensitive when applied to functions |
AllowedFunctions | Known baseline list of approved serverless functions to reduce false positives |
TimeWindow | Temporal threshold for correlating function creation with anomalous execution |