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First Time Seen Account Performing DCSync

This rule identifies when a User Account starts the Active Directory Replication Process for the first time. Attackers can use the DCSync technique to get credential information of individual accounts or the entire domain, thus compromising the entire domain.

View Source

Detection Logic

event.code:"4662" and host.os.type:"windows" and 
  winlog.event_data.Properties:(
    *DS-Replication-Get-Changes* or *DS-Replication-Get-Changes-All* or
    *DS-Replication-Get-Changes-In-Filtered-Set* or *1131f6ad-9c07-11d1-f79f-00c04fc2dcd2* or
    *1131f6aa-9c07-11d1-f79f-00c04fc2dcd2* or *89e95b76-444d-4c62-991a-0facbeda640c*) and
  not winlog.event_data.SubjectUserName:(*$ or MSOL_*)

Field Validations

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