Abnormal behavior - CIFS listed as service type in ATA but the host doesn't have that service listed in servicePrincipalName attribute RRS feed

  • Question

  • We periodically get "Suspicion of identity theft based on abnormal behavior" alerts where a user is requesting CIFS access for nearby PCs.

    The "CIFS" string is in the ATA resource access data but that isn't a Kerberos service name on the PCs.   

    Is ATA logging "CIFS" because this is what the user requested in the TG_REQ?

    Friday, February 1, 2019 5:36 PM

All replies

  • Hello,

    Based on my understanding, there is nothing to do with Kerberos or TG_REQ. ATA just learns the entity behavior for users, computers, and resources, and sends an alert when there is a deviation from the entity’s behavior based on machine learning algorithms.

    You may take an investigate to this user, and if this is a false positive, you can close and exclude this alert.

    Best regards,
    Andy Liu

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    Tuesday, February 5, 2019 1:39 AM
  • My question is not whether or not the alert is legitimate.  I am simply asking how ATA decided/learned that "CIFS" was the service being requested by the user.
    Wednesday, February 6, 2019 2:37 AM