Techniques › T1526 › AN1127
AN1127 Analytic 1127
IaaS · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Unusual enumeration of services and resources through cloud APIs such as AWS CLI
describe-*, Azure Resource Manager queries, or GCP project listings. Defender perspective includes anomalous API calls, unexpected volume of service enumeration, and correlation of discovery with recently compromised sessions.</p>- Detects
- T1526 Cloud Service Discovery
- Part of
- DET0402 Detection Strategy for Cloud Service Discovery
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 | DescribeInstances, DescribeServices, ListFunctions: High frequency enumeration calls or unusual user agents performing discovery | DC0083 Cloud Service Enumeration |
| AWS:CloudTrail | AssumeRole: Discovery actions tied to assumed identities outside of normal context | DC0013 User Account Metadata |
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 |
|---|---|
EnumerationRateThreshold | Rate of API calls used to enumerate services; tuned to reduce noise from automated inventory tools. |
UserAgentFilter | Expected user agents for cloud management tools; deviations may indicate adversarial tools. |