title: Possible remote password change (NTLM hash only) through SAMR 
description: Detects a possible remote NTLM hash change through SAMR API SamiChangePasswordUser() or SamSetInformationUser(). "Audit User Account Management" in "Advanced Audit Policy Configuration" has to be enabled in your local security policy / GPO to see this events.
author: Dimitrios Slamaris
logsource:
    product: windows
    service: security
detection:
    samrpipe:
            - EventLog: Security
              EventID: 5145
              RelativeTargetName: samr
    passwordchanged:
            - EventLog: Security
              EventID: 4738
              PasswordLastSet: (any) 
    timeframe: 15s 
    condition: samrpipe | near passwordchanged within timeframe
level: medium