I am having difficulties with back-reference in awk

Recently, I am into security logs and want to make it better way on bash-shell. I found out in awk back-references are only stored by 9. But I need to use 10 back-references. Tried

`
awk '{print gensub(/^([0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}).+?\sID\s(\[[0-9]{4}\]).+?\sTargetUserName\s=\s(.+?)\sTargetDomainName\s=\s(.+?)\sTargetLogonId\s=\s(.+?)\sLogonType\s=\s([0-9]{1,2})\s(.+?\sWorkstationName\s=\s(.+?)\sLogonGuid\s=\s.+?TransmittedServices\s=\s.+?\sLmPackageName\s=\s.+?KeyLength\s=\s.+?\sProcessId\s=\s.+?\sProcessName\s=\s.+?\sIpAddress\s=\s(.+?)\sIpPort\s\=\s([0-9]{1,}))?.+?$/,"\\5,\\4,\\3,\\2\\6,\\1,\\8,\\9,","g") }'

` Target strings (actually there are thousands of strings)

`
2017-03-21T02:00:00 kornawesome Security/Microsoft-Windows-Security-Auditing ID  :EventData/Data -> SubjectUserSid = S-1-5-18 SubjectUserName = PRETENDERS$ SubjectDomainName = WORKGROUP SubjectLogonId = 0x00000000000004j7 TargetUserSid = X-12-54-181 TargetUserName = SYSTEMS TargetDomainName = NT AUTHORITY TargetLogonId = 0x00000000000003e7 LogonType = 8 LogonProcessName = Lxxoi   AuthenticationPackageName = Negotiate WorkstationName = - LogonGuid = {00344000-0000-0000-0000-0000000003440} TransmittedServices = - LmPackageName = Stainless KeyLength = 0 ProcessId = 0x0000000000000244 ProcessName = C:/Windows/System32/services.exe IpAddress = 10.0.0.0 IpPort = 10.5.3.2 ImpersonationLevel = %%1122

` If there is another way to perform with awk and also, I would like to use basic bash and associative array. Please, also give me kind explanation...for me (noob).