A cloud function was created with an unusual runtime

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	5 Days
Required Data	Requires one of the following data sources: AWS Audit Log OR Gcp Audit Log
Detection Modules	Cloud
ATT&CK Tactic	Execution (TA0002)
ATT&CK Technique	Serverless Execution (T1648)
Severity	Low

Description

A cloud function was created with an unusual runtime.

Attacker's Goals

Execute arbitrary code in cloud environments.

Investigative actions

• Examine the cloud function's code implementation and look for any unusual invocations.
• Check for any unusual activities within the same project.

Variations

A cloud function was created with an unusual runtime by a known cloud identity

Synopsis

Field	Value
ATT&CK Tactic	Execution (TA0002)
ATT&CK Technique	Serverless Execution (T1648)
Severity	Informational

Description

A cloud function was created with an unusual runtime.

Attacker's Goals

Execute arbitrary code in cloud environments.

Investigative actions

• Examine the cloud function's code implementation and look for any unusual invocations.
• Check for any unusual activities within the same project.

A cloud function was created with a runtime that was not seen in the organization

Synopsis

Field	Value
ATT&CK Tactic	Execution (TA0002)
ATT&CK Technique	Serverless Execution (T1648)
Severity	Low

Description

A cloud function was created with an unusual runtime.

Attacker's Goals

Execute arbitrary code in cloud environments.

Investigative actions

• Examine the cloud function's code implementation and look for any unusual invocations.
• Check for any unusual activities within the same project.

A cloud function was created with a custom runtime

Synopsis

Field	Value
ATT&CK Tactic	Execution (TA0002)
ATT&CK Technique	Serverless Execution (T1648)
Severity	Medium

Description

A cloud function was created with an unusual runtime.

Attacker's Goals

Execute arbitrary code in cloud environments.

Investigative actions

• Examine the cloud function's code implementation and look for any unusual invocations.
• Check for any unusual activities within the same project.