LoFP LoFP / it is possible false positives will be present based on third party applications. filtering may be needed.

Techniques

Sample rules

Windows Computer Account Requesting Kerberos Ticket

Description

The following analytic identifies a ComputerAccount requesting a Kerberos Ticket. typically, a user account requests a Kerberos ticket. This behavior was identified with KrbUpRelay, but additional Kerberos attacks have exhibited similar behavior.

Detection logic

`wineventlog_security`  EventCode=4768 TargetUserName="*$"  src_ip!="::1" 
| stats  count min(_time) as firstTime max(_time) as lastTime by dest, subject, action, user, TargetUserName, src_ip 
| `security_content_ctime(firstTime)` 
| `security_content_ctime(lastTime)` 
| `windows_computer_account_requesting_kerberos_ticket_filter`