Credential Acquisition via Registry Hive Dumping

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Credential Acquisition via Registry Hive Dumping

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Identifies attempts to export a registry hive which may contain credentials using the Windows reg.exe tool.

Rule type: eql

Rule indices:

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

Severity: high

Risk score: 73

Runs every: 5 minutes

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

Maximum alerts per execution: 100

References:

https://medium.com/threatpunter/detecting-attempts-to-steal-passwords-from-the-registry-7512674487f8

Tags:

Elastic
Host
Windows
Threat Detection
Credential Access

Version: 4 (version history)

Added (Elastic Stack release): 7.11.0

Last modified (Elastic Stack release): 7.16.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

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process where event.type in ("start", "process_started") and
process.pe.original_file_name == "reg.exe" and process.args :
("save", "export") and process.args : ("hklm\\sam", "hklm\\security")

Threat mapping

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Framework: MITRE ATT&CK^TM

Tactic:
- Name: Credential Access
- ID: TA0006
- Reference URL: https://attack.mitre.org/tactics/TA0006/
Technique:
- Name: OS Credential Dumping
- ID: T1003
- Reference URL: https://attack.mitre.org/techniques/T1003/

Rule version history

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Version 4 (7.16.0 release)

Formatting only

Version 3 (7.12.0 release)

Updated query, changed from:

process where event.type in ("start", "process_started") and
process.pe.original_file_name == "reg.exe" and process.args :
("save", "export") and process.args : ("hklm\\sam", "hklm\\security")
and not process.parent.executable : "C:\\Program
Files*\\Rapid7\\Insight
Agent\\components\\insight_agent\\*\\ir_agent.exe"

Version 2 (7.11.2 release)

Updated query, changed from:

process where event.type in ("start", "process_started") and
process.pe.original_file_name == "reg.exe" and process.args :
("save", "export") and process.args : ("hklm\\sam", "hklm\\security")
and not process.parent.executable : "C:\\Program
Files*\\Rapid7\\Insight
Agent\\components\\insight_agent\\*\\ir_agent.exe"

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