Library / Windows

rmactivate.exe

Windows Rights Management Services Activation for Desktop Security Processor · Microsoft Corporation

WindowsSysmon-confirmed

OriginalFilename

rmactivate.exe

Shared with other binaries

Gotchas

Same OriginalFilename as rmactivate_isv.exe, so OriginalFilename alone can't tell them apart.

Query snippets

logsource:
  category: process_creation
  product: windows
detection:
  selection:
    - Image|endswith: '\rmactivate.exe'
    - OriginalFileName: 'rmactivate.exe'
  condition: selection

process_creation logsource. Sigma string matching is case-insensitive.

| tstats summariesonly=false count values(Processes.original_file_name) as original_file_name
    from datamodel=Endpoint.Processes
    where (Processes.original_file_name="rmactivate.exe" OR Processes.process_name="rmactivate.exe")
    by Processes.dest Processes.process_name Processes.process_path Processes.process
| rename Processes.* as *

Endpoint.Processes data model. On raw Sysmon events the field is OriginalFileName.

DeviceProcessEvents
| where ProcessVersionInfoOriginalFileName in~ ("rmactivate.exe")
    or FileName =~ "rmactivate.exe"

Microsoft Defender XDR advanced hunting. in~ and =~ are case-insensitive.

process where event.type == "start" and
  (process.pe.original_file_name in~ ("rmactivate.exe") or
   process.name : "rmactivate.exe")

ECS process.pe.original_file_name is a keyword field: in~ is case-insensitive, Kibana KQL is not.

['rmactivate.exe'].includes(String(OriginalFileName || '').toLowerCase())

Filter expression (JavaScript) for events carrying Sysmon's OriginalFileName field.

Values across builds

OriginalFilename	Builds	Arch	File version	Windows releases	Source	Sysmon
rmactivate.exe	2	x64, x86	10.0.26100.4202		Host scan	✓ 2

OriginalFilename

Builds

Arch

File version

Windows releases

Source

Sysmon

rmactivate.exe

x64, x86

10.0.26100.4202

Host scan

✓ 2

InternalName: Windows Rights Management Services Activation for Desktop Security Processor · Product: Microsoft® Windows® Operating System

All 2 parsed builds

SHA256	Version	Arch	OriginalFilename	Windows releases	Signature	Source	Sysmon
81b7205e9825…	10.0.26100.4202	x64	rmactivate.exe			Host scan	✓
089509b99abf…	10.0.26100.4202	x86	rmactivate.exe			Host scan	✓

SHA256

Version

Arch

OriginalFilename

Windows releases

Signature

Source

Sysmon

81b7205e9825…

10.0.26100.4202

x64

rmactivate.exe

Host scan

✓

089509b99abf…

10.0.26100.4202

x86

rmactivate.exe

Host scan

✓

Winbindex builds link to the Microsoft symbol server copy that was hashed and parsed.