Unauthorised Computer Account Creation

Description: If the computer object is created by user objects that do not normally create computer objects, this may indicate a MachineAccountQuota compromise has occurred
References: 1
SPL:

index="windows" source="XmlWinEventLog:Security" EventCode=4741
| rename signature AS EventDescription, dest_nt_domain AS Domain, TargetUserName AS Asset
| eval Time=strftime(_time, "%Y-%m-%d %H:%M:%S %z")
| lookup ad_users sAMAccountName AS src_user OUTPUT displayName AS Admin_name
| eval Admin=src_user
| table Time, index, host, Domain, Asset, EventCode, EventDescription, Admin, Admin_name