Potential Credential Access via DuplicateHandle in LSASSedit

Identifies suspicious access to an LSASS handle via DuplicateHandle from an unknown call trace module. This may indicate an attempt to bypass the NtOpenProcess API to evade detection and dump Lsass memory for credential access.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-windows.*

Severity: medium

Risk score: 47

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
  • Credential Access

Version: 1

Added (Elastic Stack release): 7.16.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule queryedit

process where event.code == "10" and /* LSASS requesting
DuplicateHandle access right to another process */ process.name :
"lsass.exe" and winlog.event_data.GrantedAccess == "0x40" and /*
call is coming from an unknown executable region */
winlog.event_data.CallTrace : "*UNKNOWN*"

Threat mappingedit