Installation of Custom Shim Databasesedit

Identifies the installation of custom Application Compatibility Shim databases. This Windows functionality has been abused by attackers to stealthily gain persistence and arbitrary code execution in legitimate Windows processes.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-windows.*

Severity: medium

Risk score: 21

Runs every: 5 minutes

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

Maximum alerts per execution: 100


  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Persistence

Version: 3 (version history)

Added (Elastic Stack release): 7.10.0

Last modified (Elastic Stack release): 7.12.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule queryedit

sequence by process.entity_id with maxspan = 5m [process where
event.type in ("start", "process_started") and not ( :
"sdbinst.exe" and : "msiexec.exe")] [registry
where event.type in ("creation", "change") and registry.path :

Threat mappingedit


Rule version historyedit

Version 3 (7.12.0 release)
  • Updated query, changed from:

    sequence by process.entity_id with maxspan=5m [process where
    event.type in ("start", "process_started") and not (
    : "sdbinst.exe" and : "msiexec.exe")] [registry
    where event.type in ("creation", "change") and
    wildcard(registry.path, "HKLM\\SOFTWARE\\Microsoft\\Windows
Version 2 (7.11.0 release)
  • Formatting only