Script file added to startup-related Registry keys

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
ATT&CK Tactic	Persistence (TA0003)
ATT&CK Technique	Boot or Logon Autostart Execution (T1547)
Severity	Medium

Description

An attacker may add a script file to the Registry "Run Keys" or the "Winlogon\Userinit" key to cause it to be executed as the user logs in.

Attacker's Goals

Gain persistence using the legitimate Windows registry run key mechanism, which executes commands on user login or computer boot.

Investigative actions

• Verify if the registered script is malicious.
• Check if the installed software is a malicious binary or script.