Suspicious WMIC XSL Script Execution
editSuspicious WMIC XSL Script Execution
editIdentifies 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.process-*
- logs-endpoint.events.library-*
- 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: None
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Defense Evasion
- Tactic: Execution
- Data Source: Elastic Defend
- Data Source: Sysmon
Version: 209
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editsequence by process.entity_id with maxspan = 2m
[process where host.os.type == "windows" and event.type == "start" 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 *", "* /format:table")]
[any where host.os.type == "windows" and (event.category == "library" or (event.category == "process" and event.action : "Image loaded*")) and
(?dll.name : ("jscript.dll", "vbscript.dll") or file.name : ("jscript.dll", "vbscript.dll"))]
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/
-
Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
-
Technique:
- Name: Windows Management Instrumentation
- ID: T1047
- Reference URL: https://attack.mitre.org/techniques/T1047/