Suspicious process modified RC script 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, Containers
ATT&CK Tactic	Persistence (TA0003), Privilege Escalation (TA0004)
ATT&CK Technique	Boot or Logon Initialization Scripts: RC Scripts (T1037.004)
Severity	Low

Description

A suspicious process modified an RC script file. These files allow system administrators to map and start custom services at startup for different run levels. This may be done to establish persistence.

Attacker's Goals

Adversaries may establish persistence by modifying RC scripts, which are executed during a Unix-like system's startup.

Investigative actions

Check the modified RC script file and try to understand the impact of the file modification.

Variations

Suspicious process modified RC script file in a Kubernetes pod

Synopsis

Field	Value
ATT&CK Tactic	Persistence (TA0003), Privilege Escalation (TA0004)
ATT&CK Technique	Boot or Logon Initialization Scripts: RC Scripts (T1037.004)
Severity	Low

Description

A suspicious process modified an RC script file. These files allow system administrators to map and start custom services at startup for different run levels. This may be done to establish persistence.

Attacker's Goals

Adversaries may establish persistence by modifying RC scripts, which are executed during a Unix-like system's startup.

Investigative actions

Check the modified RC script file and try to understand the impact of the file modification.