SigmaHQ/rules/proxy/proxy_susp_flash_download_loc.yml

title: Flash Player Update from Suspicious Location
id: 4922a5dd-6743-4fc2-8e81-144374280997
status: experimental
description: Detects a flashplayer update from an unofficial location
author: Florian Roth
date: 2017/10/25
modified: 2020/11/28
references:
    - https://gist.github.com/roycewilliams/a723aaf8a6ac3ba4f817847610935cfb
logsource:
    category: proxy
detection:
    selection:
        - c-uri-query|contains: '/flash_install.php'
        - c-uri-query|endswith: '/install_flash_player.exe'
    filter:
        c-uri-stem|contains: '.adobe.com/'
    condition: selection and not filter
falsepositives:
    - Unknown flash download locations
level: high
tags:
    - attack.initial_access
    - attack.t1189
    - attack.execution
    - attack.t1204.002
    - attack.t1204  # an old one
    - attack.defense_evasion
    - attack.t1036.005
    - attack.t1036  # an old one