Access to Kubernetes CA certificate file

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	XDR Agent with eXtended Threat Hunting (XTH)
Detector Tags	Kubernetes - AGENT, Kubernetes Credentials Theft Analytics
ATT&CK Tactic	Credential Access (TA0006)
ATT&CK Technique	Unsecured Credentials: Credentials In Files (T1552.001)
Severity	Informational

Description

A process accessed a Kubernetes CA certificate file.

Attacker's Goals

Make API calls against the Kubernetes cluster.

Investigative actions

• Look for additional suspicious activities.
• Verify if the exposed certificate was used to access the API server.
• Investigate which operations were used against the Kubernetes cluster with the exposed certificate.

Variations

Access to Kubernetes CA certificate file by an unusual process

Synopsis

Field	Value
ATT&CK Tactic	Credential Access (TA0006)
ATT&CK Technique	Unsecured Credentials: Credentials In Files (T1552.001)
Severity	Low

Description

A process accessed a Kubernetes CA certificate file for the first time.

Attacker's Goals

Make API calls against the Kubernetes cluster.

Investigative actions

• Look for additional suspicious activities.
• Verify if the exposed certificate was used to access the API server.
• Investigate which operations were used against the Kubernetes cluster with the exposed certificate.