rule:
  meta:
    name: inject shellcode using window subclass procedure
    namespace: host-interaction/process/inject
    authors:
      - jakub.jozwiak@mandiant.com
    scopes:
      static: function
      dynamic: span of calls
    att&ck:
      - Defense Evasion::Process Injection [T1055]
    mbc:
      - Defense Evasion::Process Injection [E1055]
    references:
      - https://www.hexacorn.com/blog/2017/10/26/propagate-a-new-code-injection-trick/
      - https://modexp.wordpress.com/2018/08/23/process-injection-propagate/
      - https://github.com/Fahersto/code_injection/blob/master/shellcode_injection/propagate_injection.cpp
    examples:
      - 6c440a5ce8509984dcc4e703d0e4dd9bffc4efd769dc8543f8d2e0cd86452822:0x25D7F1425
  features:
    - and:
      - match: find graphical window
      - match: open process
      - match: write process memory
      - api: user32.SetProp
      - or:
        - api: PostMessage
        - api: SendNotifyMessage
      - string: "UxSubclassInfo"
      - or:
        - string: "ToolbarWindow32"
        - string: "SHELLDLL_DefView"