Midnight Blizzard - Script payload stored in Registry

Original query, unchanged.

let cmdTokens0 = dynamic(['vbscript','jscript']);
let cmdTokens1 = dynamic(['mshtml','RunHTMLApplication']);
let cmdTokens2 = dynamic(['Execute','CreateObject','RegRead','window.close']);
(union isfuzzy=true 
(SecurityEvent
| where TimeGenerated >= ago(14d)
| where EventID == 4688
| where CommandLine has @'\Microsoft\Windows\CurrentVersion'
| where not(CommandLine has_any (@'\Software\Microsoft\Windows\CurrentVersion\Run', @'\Software\Microsoft\Windows\CurrentVersion\RunOnce'))
// If you are receiving false positives, then it may help to make the query more strict by uncommenting one or both of the lines below to refine the matches
//| where CommandLine has_any (cmdTokens0)
//| where CommandLine has_all (cmdTokens1)
| where CommandLine has_all (cmdTokens2)
| project TimeGenerated, Computer, Account, Process, NewProcessName, CommandLine, ParentProcessName, _ResourceId
),
(WindowsEvent
| where TimeGenerated >= ago(14d)
| where EventID == 4688 and EventData has_all(cmdTokens2) and  EventData has @'\Microsoft\Windows\CurrentVersion'
| where not(EventData has_any (@'\Software\Microsoft\Windows\CurrentVersion\Run', @'\Software\Microsoft\Windows\CurrentVersion\RunOnce'))
| extend CommandLine = tostring(EventData.CommandLine)
| where CommandLine has @'\Microsoft\Windows\CurrentVersion'
| where not(CommandLine has_any (@'\Software\Microsoft\Windows\CurrentVersion\Run', @'\Software\Microsoft\Windows\CurrentVersion\RunOnce'))
// If you are receiving false positives, then it may help to make the query more strict by uncommenting one or both of the lines below to refine the matches
//| where CommandLine has_any (cmdTokens0)
//| where CommandLine has_all (cmdTokens1)
| where CommandLine has_all (cmdTokens2)
| extend Account =  strcat(EventData.SubjectDomainName,"\\", EventData.SubjectUserName)
| extend NewProcessName = tostring(EventData.NewProcessName)
| extend Process=tostring(split(NewProcessName, '\\')[-1])
| extend ParentProcessName = tostring(EventData.ParentProcessName)  
| project TimeGenerated, Computer, Account, Process, NewProcessName, CommandLine, ParentProcessName, _ResourceId)
| extend Name = tostring(split(Account, "\\")[1]), NTDomain = tostring(split(Account, "\\")[0])
| extend DnsDomain = tostring(strcat_array(array_slice(split(Computer, '.'), 1, -1), '.')), HostName = tostring(split(Computer, '.', 0)[0]))