API Reference: Splunk SPL Detection Rules
Splunk REST API - Saved Searches
| Field |
Description |
name |
Saved search name |
search |
SPL query string |
is_scheduled |
1 for scheduled |
cron_schedule |
Cron expression (e.g., */5 * * * *) |
dispatch.earliest_time |
Start of search window |
alert.severity |
1-5 (info to critical) |
alert_type |
number of events |
alert_threshold |
Trigger threshold |
Key SPL Commands
| Command |
Description |
stats count by field |
Aggregate events |
where count > N |
Filter results |
table field1, field2 |
Select fields |
eval |
Compute new fields |
lookup |
Enrich from lookup table |
tstats |
Accelerated data model search |
join |
Join two datasets |
Windows Event IDs for Detection
| EventCode |
Source |
Description |
| 4624 |
Security |
Successful logon |
| 4625 |
Security |
Failed logon |
| 4648 |
Security |
Explicit credential logon |
| 4698 |
Security |
Scheduled task created |
| 4104 |
PowerShell |
Script block logging |
| 1 |
Sysmon |
Process creation |
| 3 |
Sysmon |
Network connection |
| 10 |
Sysmon |
Process access |
Alert Severity Levels
| Level |
Value |
Description |
| Info |
1 |
Informational |
| Low |
2 |
Low risk |
| Medium |
3 |
Medium risk |
| High |
4 |
High risk |
| Critical |
5 |
Critical risk |