Potential SharpRDP Behavioredit

Identifies potential behavior of SharpRDP, which is a tool that can be used to perform authenticated command execution against a remote target via Remote Desktop Protocol (RDP) for the purposes of lateral movement.

Rule type: eql

Rule indices:

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

Severity: high

Risk score: 73

Runs every: 5m

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: 4

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule queryedit

/* Incoming RDP followed by a new RunMRU string value set to cmd, powershell, taskmgr or tsclient, followed by process execution within 1m */

sequence by host.id with maxspan=1m
  [network where event.type == "start" and process.name : "svchost.exe" and destination.port == 3389 and
   network.direction : ("incoming", "ingress") and network.transport == "tcp" and
   source.address != "" and source.address != "::1"

  [registry where process.name : "explorer.exe" and
   registry.path : ("HKEY_USERS\\*\\Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\RunMRU\\*") and
   registry.data.strings : ("cmd.exe*", "powershell.exe*", "taskmgr*", "\\\\tsclient\\*.exe\\*")

  [process where event.type in ("start", "process_started") and
   (process.parent.name : ("cmd.exe", "powershell.exe", "taskmgr.exe") or process.args : ("\\\\tsclient\\*.exe")) and
   not process.name : "conhost.exe"