IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Suspicious RDP ActiveX Client Loaded
editSuspicious RDP ActiveX Client Loaded
editIdentifies 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:
- logs-endpoint.events.*
- winlogbeat-*
- logs-windows.*
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
- Lateral Movement
Version: 3 (version history)
Added (Elastic Stack release): 7.11.0
Last modified (Elastic Stack release): 7.12.0
Rule authors: Elastic
Rule license: Elastic License v2
Rule query
editlibrary where dll.name : "mstscax.dll" and /* depending on noise in your env add here extra paths */ process.executable : ( "C:\\Windows\\*", "C:\\Users\\Public\\*", "C:\\Users\\Default\\*", "C:\\Intel\\*", "C:\\PerfLogs\\*", "C:\\ProgramData\\*", "\\Device\\Mup\\*", "\\\\*" ) and /* add here FPs */ not process.executable : ("C:\\Windows\\System32\\mstsc.exe", "C:\\Windows\\SysWOW64\\mstsc.exe")
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Lateral Movement
- ID: TA0008
- Reference URL: https://attack.mitre.org/tactics/TA0008/
-
Technique:
- Name: Remote Services
- ID: T1021
- Reference URL: https://attack.mitre.org/techniques/T1021/
Rule version history
edit- Version 3 (7.12.0 release)
-
-
Updated query, changed from:
library where file.name == "mstscax.dll" and /* depending on noise in your env add here extra paths */ wildcard(process.executable, "C:\\Windows\\*", "C:\\Users\\Public\\*", "C:\\Users\\Default\\*", "C:\\Intel\\*", "C:\\PerfLogs\\*", "C:\\ProgramData\\*", "\\Device\\Mup\\*", "\\\\*") and /* add here FPs */ not process.executable in ("C:\\Windows\\System32\\mstsc.exe", "C:\\Windows\\SysWOW64\\mstsc.exe")
-
- Version 2 (7.11.2 release)
-
- Formatting only