Suspicious RDP ActiveX Client Loadededit

Identifies suspicious Image Loading of the Remote Desktop Services ActiveX Client (mstscax), this may indicate the presence of RDP lateral movement capability.

Rule type: eql

Rule indices:

  • winlogbeat-*

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



  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Lateral Movement

Version: 2 (version history)

Added (Elastic Stack release): 7.11.0

Last modified (Elastic Stack release): 7.11.2

Rule authors: Elastic

Rule license: Elastic License

Rule queryedit

library where == "mstscax.dll" and /* depending on noise
in your env add here extra paths */ wildcard(process.executable,
"C:\\Intel\\*", "C:\\PerfLogs\\*",
"\\Device\\Mup\\*", "\\\\*") and
/* add here FPs */ not process.executable in

Threat mappingedit


Rule version historyedit

Version 2 (7.11.2 release)
  • Formatting only