Malicious RDP Discovery Performed on Multiple Hosts (via rdp)
- Product
- windows
- Category
- rdp
- Author
- HuntRule
- Published
- 2026-08-01
- Updated
- 2026-08-28
ATT&CK techniques
Cred Access → Lateral MovementRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects discover active RDP services via tools like Hydra. Note that this event doesn't provide any information about login outcome (success or failure) as well as user information. For further correlation, ID 4624/4625 (logon type 3, 7 or 10) as well as ID 1149 should be used.
Reporting behind it
- attack.mitre.orghttps://attack.mitre.org/techniques/T1046/
- attack.mitre.orghttps://attack.mitre.org/techniques/T1110/
- attack.mitre.orghttps://attack.mitre.org/techniques/T1021/001/
- github.comhttps://github.com/mehranexpert/Crazy-RDP
- github.comhttps://github.com/3gstudent/SharpRDPCheck
- ponderthebits.comhttps://ponderthebits.com/2018/02/windows-rdp-related-event-logs-identification-tracking-and-investigation/
- purerds.orghttps://purerds.org/remote-desktop-security/auditing-remote-desktop-services-logon-failures-1/
- woshub.comhttp://woshub.com/rdp-connection-logs-forensics-windows/
- jpcertcc.github.iohttps://jpcertcc.github.io/ToolAnalysisResultSheet/details/mstsc.htm
- github.comhttps://github.com/AndrewRathbun/DFIRMindMaps/tree/main/OSArtifacts/Windows/RDP_Authentication_Artifacts
- github.comhttps://github.com/TonyPhipps/SIEM/blob/master/Notable-Event-IDs.md#microsoft-windows-remotedesktopservices-rdpcoretsoperational
- dfironthemountain.wordpress.comhttps://dfironthemountain.wordpress.com/2019/02/15/rdp-event-log-dfir/
- nullsec.ushttps://nullsec.us/windows-event-id-1029-hashes/
- 13cubed.comhttps://www.13cubed.com/downloads/rdp_flowchart.pdf
- nullsec.ushttps://nullsec.us/windows-rdp-related-event-logs-the-client-side-of-the-story/
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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