Suspicious runonce.exe parent process

Cortex XDR Analytics Alert Reference by data source

Product
Cortex XDR
Last date published
2024-12-03
Category
Analytics Alert Reference
Order
data source

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

N/A (single event)

Deduplication Period

6 Hours

Required Data

  • Requires:
    • XDR Agent

Detection Modules

Detector Tags

ATT&CK Tactic

Persistence (TA0003)

ATT&CK Technique

Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder (T1547.001)

Severity

Low

Description

Runonce.exe executes commands under the Registry key HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce, typically on computer boot and user logon events.

Attacker's Goals

Command execution and persistence on the host.

Investigative actions

Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.