Library / Windows
fxssvc.exe
Fax Service · Microsoft Corporation
WindowsParsedSigma refs: 1
OriginalFilename
FXSSVC.EXE
Query snippets
logsource:
category: process_creation
product: windows
detection:
selection:
- Image|endswith: '\fxssvc.exe'
- OriginalFileName: 'FXSSVC.EXE'
condition: selectionprocess_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="FXSSVC.EXE" OR Processes.process_name="fxssvc.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~ ("FXSSVC.EXE")
or FileName =~ "fxssvc.exe"Microsoft Defender XDR advanced hunting. in~ and =~ are case-insensitive.
process where event.type == "start" and
(process.pe.original_file_name in~ ("FXSSVC.EXE") or
process.name : "fxssvc.exe")ECS process.pe.original_file_name is a keyword field: in~ is case-insensitive, Kibana KQL is not.
['fxssvc.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 |
|---|---|---|---|---|---|---|
| FXSSVC.EXE | 9 | x64 | 10.0.10240.19747 → 10.0.28000.2804 | Win10 1507 → Win11 26H1 (11) | Winbindex |
All 9 parsed builds · 8 Windows release groups not verifiable
| SHA256 | Version | Arch | OriginalFilename | Windows releases | Signature | Source | Sysmon |
|---|---|---|---|---|---|---|---|
| 5f284ac2c895… | 10.0.28000.2804 | x64 | FXSSVC.EXE | Win11 26H1 | Winbindex | ||
| 2fa6bbbb9644… | 10.0.26100.9549 | x64 | FXSSVC.EXE | Win11 24H2 | Unsigned | Winbindex | |
| c685b1bf3c5e… | 10.0.14393.5717 | x64 | FXSSVC.EXE | Win10 1607 | Unsigned | Winbindex | |
| 0f31b81c73d3… | 10.0.10240.19747 | x64 | FXSSVC.EXE | Win10 1507 | Unsigned | Winbindex | |
| 19b0c89d01b8… | 10.0.19041.2604 | x64 | FXSSVC.EXE | Win10 20H2 … Win10 22H2 (3) | Unsigned | Winbindex | |
| c88f0dd3e30b… | 10.0.22000.856 | x64 | FXSSVC.EXE | Win11 21H2 | Unsigned | Winbindex | |
| 9bc4e25f7f49… | 10.0.17763.3165 | x64 | FXSSVC.EXE | Win10 1809 | Unsigned | Winbindex | |
| 1de2be783c9e… | 10.0.17134.2026 | x64 | FXSSVC.EXE | Win10 1803 | Unsigned | Winbindex | |
| 9e1ec0c71987… | 10.0.10586.0 | x64 | FXSSVC.EXE | Win10 1511 | Unsigned | Winbindex |
Winbindex builds link to the Microsoft symbol server copy that was hashed and parsed.