Analytics Informational

A user authenticated with weak NTLM to multiple hosts

A user account authenticated to multiple hosts via NTLMv1 or LM authentication for the first time in the past 30 days.

Module:
Identity Analytics
Data source:
XDR Agent
ATT&CK tactics: Lateral Movement (TA0008)
ATT&CK techniques: Use Alternate Authentication Material (T1550)
Attacker's goals:

The attacker attempts to gain access to the accounts.

Investigative actions:

Audit all login events with a weaker protocol and review any anomalous usage. Investigate the mentioned user for additional suspicious activity.

Test period:
1 Hour
Deduplication:
1 Day