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Potential Windows Session Hijacking via CcmExec

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Potential Windows Session Hijacking via CcmExec

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This detection rule identifies when SCNotification.exe loads an untrusted DLL, which is a potential indicator of an attacker attempt to hijack/impersonate a Windows user session.

Rule type: eql

Rule indices:

logs-endpoint.events.library-*

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:

Tags:

Domain: Endpoint
OS: Windows
Use Case: Threat Detection
Tactic: Defense Evasion
Data Source: Elastic Defend

Version: 1

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

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library where host.os.type == "windows" and process.name : "SCNotification.exe" and
  (dll.Ext.relative_file_creation_time < 86400 or dll.Ext.relative_file_name_modify_time <= 500) and dll.code_signature.status != "trusted"

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
Technique:
- Name: Hijack Execution Flow
- ID: T1574
- Reference URL: https://attack.mitre.org/techniques/T1574/

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