IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Program Files Directory Masqueradingedit
Identifies execution from a directory masquerading as the Windows Program Files directories. These paths are trusted and usually host trusted third party programs. An adversary may leverage masquerading, along with low privileges to bypass detections allowlisting those folders.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
- 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
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Defense Evasion
Version: 7 (version history)
Added (Elastic Stack release): 7.11.0
Last modified (Elastic Stack release): 8.2.0
Rule authors: Elastic
Rule license: Elastic License v2
Investigation guideedit
## Config If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
Rule queryedit
process where event.type == "start" and process.executable : "C:\\*Program*Files*\\*.exe" and not process.executable : ("C:\\Program Files\\*.exe", "C:\\Program Files (x86)\\*.exe", "C:\\Users\\*.exe", "C:\\ProgramData\\*.exe")
Threat mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Masquerading
- ID: T1036
- Reference URL: https://attack.mitre.org/techniques/T1036/
Rule version historyedit
- Version 7 (8.2.0 release)
-
- Formatting only
- Version 6 (8.1.0 release)
-
- Formatting only
- Version 5 (7.16.0 release)
-
- Formatting only
- Version 4 (7.13.0 release)
-
-
Updated query, changed from:
process where event.type in ("start", "process_started", "info") and /* capture both fake program files directory in process executable as well as if passed in process args as a dll*/ process.args : ("C:\\*Program*Files*\\*", "C:\\*Program*Files*\\*") and not process.args : ("C:\\Program Files\\*", "C:\\Program Files (x86)\\*")
-
- Version 3 (7.12.0 release)
-
- Formatting only
- Version 2 (7.11.2 release)
-
- Formatting only