Alternate Data Stream Creation/Execution at Volume Root Directoryedit
Identifies the creation of an Alternate Data Stream (ADS) at a volume root directory, which can indicate the attempt to hide tools and malware, as ADSs created in this directory are not displayed by system utilities.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.process-*
- logs-endpoint.events.file-*
- logs-windows.sysmon_operational-*
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
- Data Source: Sysmon
Version: 1
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule queryedit
any where host.os.type == "windows" and event.category in ("file", "process") and
(
(event.type == "creation" and file.path regex~ """[A-Z]:\\:.+""") or
(event.type == "start" and process.executable regex~ """[A-Z]:\\:.+""")
)
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Hide Artifacts
- ID: T1564
- Reference URL: https://attack.mitre.org/techniques/T1564/
-
Sub-technique:
- Name: NTFS File Attributes
- ID: T1564.004
- Reference URL: https://attack.mitre.org/techniques/T1564/004/