Remote usage of AWS Lambda's token

Cortex XDR Analytics Alert Reference by Alert name

Product
Cortex XDR
Last date published
2024-06-04
Category
Analytics Alert Reference
Order
Alert name

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

N/A (single event)

Deduplication Period

7 Days

Required Data

  • Requires:
    • AWS Audit Log

Detection Modules

Cloud

ATT&CK Tactic

Credential Access (TA0006)

ATT&CK Technique

Severity

Informational

Description

An AWS Lambda's token was used externally of the cloud environment.

Attacker's Goals

Exfiltrate token and abuse it remotely.

Investigative actions

  • Check if the role is attached to the Lambda.
  • Check if the IAM role was assumed by a different identity.
  • Check what API calls were executed by the access-key.

Variations

Remote command line usage of AWS Lambda's token

Synopsis

ATT&CK Tactic

Credential Access (TA0006)

ATT&CK Technique

Severity

High

Description

An AWS Lambda's token was used externally of the cloud environment.

Attacker's Goals

Exfiltrate token and abuse it remotely.

Investigative actions

  • Check if the role is attached to the Lambda.
  • Check if the IAM role was assumed by a different identity.
  • Check what API calls were executed by the access-key.


Suspicious usage of AWS Lambda's role

Synopsis

ATT&CK Tactic

Credential Access (TA0006)

ATT&CK Technique

Severity

Medium

Description

An AWS Lambda's token was used externally of the cloud environment.

Attacker's Goals

Exfiltrate token and abuse it remotely.

Investigative actions

  • Check if the role is attached to the Lambda.
  • Check if the IAM role was assumed by a different identity.
  • Check what API calls were executed by the access-key.


Suspicious usage of AWS Lambda's role

Synopsis

ATT&CK Tactic

Credential Access (TA0006)

ATT&CK Technique

Severity

Low

Description

An AWS Lambda's token was used externally of the cloud environment.

Attacker's Goals

Exfiltrate token and abuse it remotely.

Investigative actions

  • Check if the role is attached to the Lambda.
  • Check if the IAM role was assumed by a different identity.
  • Check what API calls were executed by the access-key.


Suspicious usage of AWS Lambda's token

Synopsis

ATT&CK Tactic

Credential Access (TA0006)

ATT&CK Technique

Severity

High

Description

An AWS Lambda's token was used externally of the cloud environment.

Attacker's Goals

Exfiltrate token and abuse it remotely.

Investigative actions

  • Check if the role is attached to the Lambda.
  • Check if the IAM role was assumed by a different identity.
  • Check what API calls were executed by the access-key.


Usage of AWS Lambda's token from known ASN

Synopsis

ATT&CK Tactic

Credential Access (TA0006)

ATT&CK Technique

Severity

Informational

Description

An AWS Lambda's token was used externally of the cloud environment.

Attacker's Goals

Exfiltrate token and abuse it remotely.

Investigative actions

  • Check if the role is attached to the Lambda.
  • Check if the IAM role was assumed by a different identity.
  • Check what API calls were executed by the access-key.