patch-event-tracing-for-windows-function.yml

rule:
  meta:
    name: patch Event Tracing for Windows function
    namespace: anti-analysis/anti-av
    authors:
      - jakub.jozwiak@mandiant.com
    scope: function
    att&ck:
      - Defense Evasion::Impair Defenses::Indicator Blocking [T1562.006]
    mbc:
      - Defense Evasion::Disable or Evade Security Tools [F0004]
    references:
      - https://unprotect.it/technique/disabling-event-tracing-for-windows-etw/
      - https://github.com/Mr-Un1k0d3r/AMSI-ETW-Patch/blob/main/patch-etw-x64.c
    examples:
      - 15835b6dd703e69d22d4ab941ccd5f6e78c3abc22ae123366da5e950eaa62e2b:0x180001D70
  features:
    - and:
      - match: link function at runtime on Windows
      - or:
        - api: kernel32.VirtualProtect
        - api: ntdll.NtProtectVirtualMemory  # exported by only ntdll, not ntoskrnl
        - api: ZwProtectVirtualMemory  # exported by both ntdll and ntoskrnl
        - string: "VirtualProtect"
        - string: "NtProtectVirtualMemory"
        - string: "ZwProtectVirtualMemory"
      - or:
        - string: "EventWrite"
        - string: "EtwEventWrite"
        - string: "EtwEventWriteFull"
        - string: "TraceEvent"
        - string: "NtTraceEvent"
        - string: "ZwTraceEvent"
        - string: "NtTraceControl"
        - string: "ZwTraceControl"
      - optional:
        - match: write process memory