IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
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Elastic Docs ›Elastic Security Solution [7.16] ›Downloadable rule update v0.16.1

Kerberos Traffic from Unusual Process

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Kerberos Traffic from Unusual Process

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Identifies network connections to the standard Kerberos port from an unusual process. On Windows, the only process that normally performs Kerberos traffic from a domain joined host is lsass.exe.

Rule type: eql

Rule indices:

  • logs-endpoint.events.*
  • winlogbeat-*
  • logs-windows.*

Severity: medium

Risk score: 47

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Credential Access

Version: 5

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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network where event.type == "start" and network.direction : ("outgoing", "egress") and
 destination.port == 88 and source.port >= 49152 and
 process.executable != "C:\\Windows\\System32\\lsass.exe" and destination.address !="127.0.0.1" and destination.address !="::1" and
 /* insert false positives here */
 not process.name in ("swi_fc.exe", "fsIPcam.exe", "IPCamera.exe", "MicrosoftEdgeCP.exe", "MicrosoftEdge.exe", "iexplore.exe", "chrome.exe", "msedge.exe", "opera.exe", "firefox.exe")

Framework: MITRE ATT&CKTM

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