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LogonTracer is a tool to investigate malicious logon by visualizing and analyzing Windows Active Directory event logs. This tool associates a host name (or an IP address) and account name found in logon-related events and displays it as a graph. This way, it is possible to see in which account login attempt occurs and which host is used.
This tool can visualize the following event id related to Windows logon based on this research.

  • 4624: Successful logon
  • 4625: Logon failure
  • 4768: Kerberos Authentication (TGT Request)
  • 4769: Kerberos Service Ticket (ST Request)
  • 4776: NTLM Authentication
  • 4672: Assign special privileges

More details are described in the following documents:

LogonTracer sample

Additional Analysis

LogonTracer uses PageRank, Hidden Markov model and ChangeFinder to detect malicious hosts and accounts from event log.
PageRank List
With LogonTracer, it is also possible to display event logs in a chronological order.

Use LogonTracer

To use LogonTracer, you can:


If you want to know more details, please check the LogonTracer wiki.


Following YouTube's video shows how to use LogonTracer.



LogonTracer is written in Python and uses Neo4j for database. The following tools are used.

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