37 lines
1.2 KiB
YAML
37 lines
1.2 KiB
YAML
title: XSL Script Processing
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author: Timur Zinniatullin, oscd.community
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date: 2019/10/21
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description: Extensible Stylesheet Language (XSL) files are commonly used to describe
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the processing and rendering of data within XML files. Rule detects when adversaries
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abuse this functionality to execute arbitrary files while potentially bypassing
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application whitelisting defenses.
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detection:
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SELECTION_1:
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EventID: 1
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SELECTION_2:
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Image: '*\wmic.exe'
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SELECTION_3:
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CommandLine: '*/format*'
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SELECTION_4:
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Image: '*\msxsl.exe'
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condition: (SELECTION_1 and ((SELECTION_2 and SELECTION_3) or SELECTION_4))
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falsepositives:
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- WMIC.exe FP depend on scripts and administrative methods used in the monitored environment.
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- msxsl.exe is not installed by default, so unlikely.
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id: 05c36dd6-79d6-4a9a-97da-3db20298ab2d
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level: medium
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logsource:
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category: process_creation
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product: windows
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modified: 2019/11/04
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1220/T1220.md
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status: experimental
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tags:
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- attack.defense_evasion
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- attack.t1220
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- attack.execution
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yml_filename: win_xsl_script_processing.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
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