IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Suspicious WMIC XSL Script Executionedit
Identifies WMIC allowlist bypass techniques by alerting on suspicious execution of scripts. When WMIC loads scripting libraries it may be indicative of an allowlist bypass.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
- logs-windows.*
Severity: medium
Risk score: 21
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: 3 (version history)
Added (Elastic Stack release): 7.10.0
Last modified (Elastic Stack release): 8.1.0
Rule authors: Elastic
Rule license: Elastic License v2
Rule queryedit
sequence by process.entity_id with maxspan = 2m [process where
event.type in ("start", "process_started") and (process.name :
"WMIC.exe" or process.pe.original_file_name : "wmic.exe") and
process.args : ("format*:*", "/format*:*", "*-format*:*") and not
process.command_line : "* /format:table *"] [library where event.type
== "start" and dll.name : ("jscript.dll", "vbscript.dll")]
Threat mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: XSL Script Processing
- ID: T1220
- Reference URL: https://attack.mitre.org/techniques/T1220/
Rule version historyedit
- Version 3 (8.1.0 release)
-
- Formatting only
- Version 2 (7.12.0 release)
-
-
Updated query, changed from:
sequence by process.entity_id with maxspan=2m [process where event.type in ("start", "process_started") and (process.name : "WMIC.exe" or process.pe.original_file_name == "wmic.exe") and wildcard(process.args, "format*:*", "/format*:*", "*-format*:*") and not wildcard(process.command_line, "* /format:table *")] [library where event.type == "start" and file.name in ("jscript.dll", "vbscript.dll")]
-