Library / Windows
nslookup.exe
nslookup · Microsoft Corporation
WindowsSysmon-confirmedSigma refs: 6
OriginalFilename
nslookup.exe
Query snippets
logsource:
category: process_creation
product: windows
detection:
selection:
- Image|endswith: '\nslookup.exe'
- OriginalFileName: 'nslookup.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="nslookup.exe" OR Processes.process_name="nslookup.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~ ("nslookup.exe")
or FileName =~ "nslookup.exe"Microsoft Defender XDR advanced hunting. in~ and =~ are case-insensitive.
process where event.type == "start" and
(process.pe.original_file_name in~ ("nslookup.exe") or
process.name : "nslookup.exe")ECS process.pe.original_file_name is a keyword field: in~ is case-insensitive, Kibana KQL is not.
['nslookup.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 |
|---|---|---|---|---|---|---|
| nslookup.exe | 16 | x64, x86 | 10.0.10240.16384 → 10.0.28000.3086 | Win10 1507 → Win11 26H1 (9) | Host scan, Winbindex | ✓ 2 |
All 16 parsed builds · 24 Windows release groups not verifiable
| SHA256 | Version | Arch | OriginalFilename | Windows releases | Signature | Source | Sysmon |
|---|---|---|---|---|---|---|---|
| a1bfb6c1f8a0… | 10.0.28000.3086 | x64 | nslookup.exe | Win11 26H1 | Unsigned | Winbindex | |
| 39d399d7d06c… | 10.0.28000.3086 | x86 | nslookup.exe | Win11 26H1 | Winbindex | ||
| f1fea06df0e6… | 10.0.26100.9549 | x86 | nslookup.exe | Win11 24H2 | Unsigned | Host scan, Winbindex | ✓ |
| 5ec43874e316… | 10.0.26100.9549 | x64 | nslookup.exe | Win11 24H2 | Unsigned | Host scan, Winbindex | ✓ |
| b137efebc097… | 10.0.17763.292 | x86 | nslookup.exe | Win10 1809 | Unsigned | Winbindex | |
| 54daf167f8db… | 10.0.17763.292 | x64 | nslookup.exe | Win10 1809 | Unsigned | Winbindex | |
| dc888220804a… | 10.0.26100.5074 | x86 | nslookup.exe | Win11 24H2, Win11 25H2 | Unsigned | Winbindex | |
| 0a3c6c6479f1… | 10.0.26100.5074 | x64 | nslookup.exe | Win11 24H2, Win11 25H2 | Unsigned | Winbindex | |
| 7ea2231e5725… | 10.0.16299.15 | x86 | nslookup.exe | Win10 1709 | Unsigned | Winbindex | |
| 4a3e0efaf2ca… | 10.0.15063.0 | x64 | nslookup.exe | Win10 1703 | Unsigned | Winbindex | |
| eebd0be4886f… | 10.0.14393.0 | x86 | nslookup.exe | Win10 1607 | Unsigned | Winbindex | |
| 24553bfab138… | 10.0.14393.0 | x64 | nslookup.exe | Win10 1607 | Unsigned | Winbindex | |
| 82bea2ceb5e1… | 10.0.10586.0 | x86 | nslookup.exe | Win10 1511 | Unsigned | Winbindex | |
| 1011e2dc93e0… | 10.0.10586.0 | x64 | nslookup.exe | Win10 1511 | Unsigned | Winbindex | |
| b0eea66f156e… | 10.0.10240.16384 | x86 | nslookup.exe | Win10 1507 | Unsigned | Winbindex | |
| 9421f2841f97… | 10.0.10240.16384 | x64 | nslookup.exe | Win10 1507 | Unsigned | Winbindex |
Winbindex builds link to the Microsoft symbol server copy that was hashed and parsed.