sigmamediumHunting

Renamed CURL.EXE Execution

Detects the execution of a renamed "CURL.exe" binary based on the PE metadata fields

MITRE ATT&CK

executiondefense-evasion

Detection Query

selection:
  - OriginalFileName: curl.exe
  - Description: The curl executable
filter_main_img:
  Image|contains: \curl
condition: selection and not 1 of filter_main_*

Author

X__Junior (Nextron Systems)

Created

2023-09-11

Data Sources

windowsProcess Creation Events

Platforms

windows

References

https://twitter.com/Kostastsale/status/1700965142828290260

Tags

attack.executionattack.t1059attack.defense-evasionattack.t1202

Raw Content

title: Renamed CURL.EXE Execution
id: 7530cd3d-7671-43e3-b209-976966f6ea48
status: test
description: Detects the execution of a renamed "CURL.exe" binary based on the PE metadata fields
references:
    - https://twitter.com/Kostastsale/status/1700965142828290260
author: X__Junior (Nextron Systems)
date: 2023-09-11
modified: 2023-10-12
tags:
    - attack.execution
    - attack.t1059
    - attack.defense-evasion
    - attack.t1202
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - OriginalFileName: 'curl.exe'
        - Description: 'The curl executable'
    filter_main_img:
        Image|contains: '\curl'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unknown
level: medium
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_renamed_curl/info.yml