Library / Windows
nbtstat.exe
TCP/IP NetBios Information · Microsoft Corporation
WindowsSysmon-confirmedSigma refs: 1
OriginalFilename
nbtinfo.exe
Differs from file name
Gotchas
- OriginalFilename doesn't match the file name: a rule using
OriginalFileName: nbtstat.exenever fires.
Query snippets
logsource:
category: process_creation
product: windows
detection:
selection:
- Image|endswith: '\nbtstat.exe'
- OriginalFileName: 'nbtinfo.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="nbtinfo.exe" OR Processes.process_name="nbtstat.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~ ("nbtinfo.exe")
or FileName =~ "nbtstat.exe"Microsoft Defender XDR advanced hunting. in~ and =~ are case-insensitive.
process where event.type == "start" and
(process.pe.original_file_name in~ ("nbtinfo.exe") or
process.name : "nbtstat.exe")ECS process.pe.original_file_name is a keyword field: in~ is case-insensitive, Kibana KQL is not.
['nbtinfo.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 |
|---|---|---|---|---|---|---|
| nbtinfo.exe | 6 | x64 | 10.0.10240.16384 → 10.0.28000.1896 | Win10 1507 → Win11 26H1 (6) | Host scan, Winbindex | ✓ 1 |
All 6 parsed builds · 14 Windows release groups not verifiable
| SHA256 | Version | Arch | OriginalFilename | Windows releases | Signature | Source | Sysmon |
|---|---|---|---|---|---|---|---|
| 7ec36aba70d9… | 10.0.28000.1896 | x64 | nbtinfo.exe | Win11 26H1 | Winbindex | ||
| 4b5abcd833a8… | 10.0.26100.1150 | x64 | nbtinfo.exe | Win11 24H2, Win11 25H2 | Signed (Catalog file) | Host scan, Winbindex | ✓ |
| 61a4edc6552c… | 10.0.26100.1 | x64 | nbtinfo.exe | Win11 24H2 | Unsigned | Winbindex | |
| 41c05b8342ad… | 10.0.14393.0 | x64 | nbtinfo.exe | Win10 1607 | Unsigned | Winbindex | |
| 67a2d92d0fd9… | 10.0.10586.0 | x64 | nbtinfo.exe | Win10 1511 | Unsigned | Winbindex | |
| ab6a303d0fd0… | 10.0.10240.16384 | x64 | nbtinfo.exe | Win10 1507 | Unsigned | Winbindex |
Winbindex builds link to the Microsoft symbol server copy that was hashed and parsed.