KQL_sysmon_susp_rdp.txt

// title: Suspicious Outbound RDP Connections 
// description: Detects Non-Standard Tools Connecting to TCP port 3389 indicating possible lateral movement
//
// reference: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0708
//
// original author: Markus Neis (Swisscom)
// KQL author: Maarten Goet (condicio)
//
// MITRE ATT&CK: lateral_movement, t1210 

Event 
| parse EventData with 
  * 'Data Name="RuleName">' RuleName '<' 
  * 'Data Name="UtcTime">' UtcTime '<' 
  * 'Data Name="ProcessGuid">' ProcessGuid '<' 
  * 'Data Name="ProcessId">' ProcessId '<' 
  * 'Data Name="Image">' Image '<' 
  * 'Data Name="User">' User '<' 
  * 'Data Name="Protocol">' Protocol '<' 
  * 'Data Name="Initiated">' Initiated '<' 
  * 'Data Name="SourceIsIpv6">' SourceIsIpv6 '<' 
  * 'Data Name="SourceIp">' SourceIp '<' 
  * 'Data Name="SourceHostname">' SourceHostname '<' 
  * 'Data Name="SourcePort">' SourcePort '<' 
  * 'Data Name="SourcePortName">' SourcePortName '<' 
  * 'Data Name="DestinationIsIpv6">' DestinationIsIpv6 '<' 
  * 'Data Name="DestinationIp">' DestinationIp '<' 
  * 'Data Name="DestinationHostname">' DestinationHostname '<' 
  * 'Data Name="DestinationPort">' DestinationPort '<' 
  * 'Data Name="DestinationPortName">' DestinationPortName '<' 
  *  
 | where ((EventID == "3" and DestinationPort == "3389") and not 
   (Image endswith "\\mstsc.exe" 
 or Image endswith "\\RTSApp.exe" 
 or Image endswith "\\RTS2App.exe" 
 or Image endswith "\\RDCMan.exe" 
 or Image endswith "\\ws_TunnelService.exe" 
 or Image endswith "\\RSSensor.exe" 
 or Image endswith "\\RemoteDesktopManagerFree.exe" 
 or Image endswith "\\RemoteDesktopManager.exe" 
 or Image endswith "\\RemoteDesktopManager64.exe" 
 or Image endswith "\\mRemoteNG.exe" 
 or Image endswith "\\mRemote.exe" 
 or Image endswith "\\Terminals.exe" 
 or Image endswith "\\spiceworks-finder.exe" 
 or Image endswith "\\FSDiscovery.exe" 
 or Image endswith "\\FSAssessment.exe" 
 or Image endswith "\\MobaRTE.exe" 
 or Image endswith "\\chrome.exe"))