DEV-0270 New User Creation

Requête originale, sans modification.

(union isfuzzy=true
(SecurityEvent
| where EventID == 4688
| where CommandLine has_all ('net user', '/add') 
| parse CommandLine with * "user " username " "*
| extend password = extract(@"\buser\s+[^\s]+\s+([^\s]+)", 1, CommandLine) 
| where username in('DefaultAccount') or password in('P@ssw0rd1234', '_AS_@1394') 
| project TimeGenerated, Computer, Account, AccountDomain, ProcessName, ProcessNameFullPath = NewProcessName, EventID, Activity, CommandLine, EventSourceName, Type
),
(DeviceProcessEvents 
| where InitiatingProcessCommandLine has_all('net user', '/add') 
| parse InitiatingProcessCommandLine with * "user " username " "* 
| extend password = extract(@"\buser\s+[^\s]+\s+([^\s]+)", 1, InitiatingProcessCommandLine) 
| where username in('DefaultAccount') or password in('P@ssw0rd1234', '_AS_@1394') 
| extend Account = strcat(InitiatingProcessAccountDomain, @'\', InitiatingProcessAccountName), Computer = DeviceName
)
)
| extend HostName = tostring(split(Computer, ".")[0]), DomainIndex = toint(indexof(Computer, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)
| extend AccountName = tostring(split(Account, @'\')[1]), AccountNTDomain = tostring(split(Account, @'\')[0])