sigmamediumHunting

Windows Binary Executed From WSL

Detects the execution of Windows binaries from within a WSL instance. This could be used to masquerade parent-child relationships

MITRE ATT&CK

T1202

executiondefense-evasion

Detection Query

selection:
  Image|re: "[a-zA-Z]:\\\\"
  CurrentDirectory|contains: \\\\wsl.localhost
condition: selection

Author

Nasreddine Bencherchali (Nextron Systems)

Created

2023-02-14

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Internal Research

Tags

attack.executionattack.defense-evasionattack.t1202

Raw Content

title: Windows Binary Executed From WSL
id: ed825c86-c009-4014-b413-b76003e33d35
status: test
description: |
    Detects the execution of Windows binaries from within a WSL instance.
    This could be used to masquerade parent-child relationships
references:
    - Internal Research
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-02-14
tags:
    - attack.execution
    - attack.defense-evasion
    - attack.t1202
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|re: '[a-zA-Z]:\\'
        CurrentDirectory|contains: '\\\\wsl.localhost' # Note: programs not supporting UNC paths (example: cmd.exe). Will default to another location
    condition: selection
falsepositives:
    - Unknown
level: medium