Remote File Download via MpCmdRunedit

Identifies the Windows Defender configuration utility (MpCmdRun.exe) being used to download a remote file.

Rule type: query

Rule indices:

  • winlogbeat-*
  • logs-endpoint.events.*

Severity: medium

Risk score: 47

Runs every: 5 minutes

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Command and Control

Version: 1

Added (Elastic Stack release): 7.10.0

Rule authors: Elastic

Rule license: Elastic License

Investigation guideedit

Verify details such as the parent process, URL reputation, and downloaded file details. Additionally, MpCmdRun logs this information in the Appdata Temp folder in MpCmdRun.log.

Rule queryedit

event.category:process and event.type:(start or process_started) and
(process.name:MpCmdRun.exe or
process.pe.original_file_name:MpCmdRun.exe or
winlog.event_data.OriginalFileName:MpCmdRun.exe) and
process.args:(("-DownloadFile" or "-downloadfile") and "-url" and
"-path")

Threat mappingedit

Framework: MITRE ATT&CKTM