Query Details

Kerberos Unusual Process

Query

// Kerberos traffic from unusual Windows process
DeviceNetworkEvents
| where RemotePort == 88
// -- BEGIN FALSE POSITIVES --
| where InitiatingProcessFileName != ""  // missing sensor data
| where InitiatingProcessFolderPath !~ "c:\\windows\\system32\\lsass.exe"  // Windows default kerberos client
// -- END FALSE POSITIVES --
| where AdditionalFields !contains "Posix"  // ignore Linux and Mac
| sort by Timestamp

Explanation

This query is looking for Kerberos traffic from a Windows process that is not the default Kerberos client. It filters out false positives and ignores Linux and Mac systems. The results are sorted by timestamp.