> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/ntlm-password-spray.md).
# NTLM Password Spray
### Synopsis
| Field | Value |
| -------------------- | ----------------------------------------------------------------------------------------------------------- |
| Activation Period | 14 Days |
| Training Period | 30 Days |
| Test Period | 10 Minutes |
| Deduplication Period | 1 Day |
| Required Data | Requires one of the following data sources:
Palo Alto Networks Firewall traffic Logs OR XDR Agent
|
| Detection Modules | Identity Analytics |
| ATT\&CK Tactic | Credential Access (TA0006) |
| ATT\&CK Technique | Brute Force: Password Spraying (T1110.003) |
| Severity | Informational |
### Description
A single host tried to perform an unusual amount of login attempts using NTLM in a short period of time. This may be indicative of a NTLM password spray attack.
### Attacker's Goals
The attacker may attempt to guess user credential by password spray attack over multiple machines.
### Investigative actions
Verify any successful authentication made by one of the user accounts referenced by the alert, as these may indicate the attacker managed to guess the credentials.
### Variations
NTLM password spray on a sensitive entity
**Synopsis**
| Field | Value |
| ----------------- | ------------------------------------------ |
| ATT\&CK Tactic | Credential Access (TA0006) |
| ATT\&CK Technique | Brute Force: Password Spraying (T1110.003) |
| Severity | Low |
**Description**
A single host tried to perform an unusual amount of login attempts using NTLM in a short period of time on a sensitive entity. This may be indicative of a NTLM password spray attack.
**Attacker's Goals**
The attacker may attempt to guess user credential by password spray attack over multiple machines.
**Investigative actions**
Verify any successful authentication made by one of the user accounts referenced by the alert, as these may indicate the attacker managed to guess the credentials.
---
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