Library / LOLBin
workfolders.exe
Work Folders · Microsoft Corporation
OriginalFilename
WorkFolders.exe
Query snippets
logsource:
category: process_creation
product: windows
detection:
selection:
- Image|endswith: '\workfolders.exe'
- OriginalFileName: 'WorkFolders.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="WorkFolders.exe" OR Processes.process_name="workfolders.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~ ("WorkFolders.exe")
or FileName =~ "workfolders.exe"Microsoft Defender XDR advanced hunting. in~ and =~ are case-insensitive.
process where event.type == "start" and
(process.pe.original_file_name in~ ("WorkFolders.exe") or
process.name : "workfolders.exe")ECS process.pe.original_file_name is a keyword field: in~ is case-insensitive, Kibana KQL is not.
['workfolders.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 |
|---|---|---|---|---|---|---|
| WorkFolders.exe | 14 | x64 | 10.0.10240.20708 → 10.0.28000.3231 | Win10 1507 → Win11 26H1 (15) | Host scan, Winbindex |
All 14 parsed builds · 6 Windows release groups not verifiable
| SHA256 | Version | Arch | OriginalFilename | Windows releases | Signature | Source | Sysmon |
|---|---|---|---|---|---|---|---|
| 42e2d125f6e9… | 10.0.28000.3231 | x64 | WorkFolders.exe | Win11 26H1 | Winbindex | ||
| eb255d6455d2… | 10.0.26100.9711 | x64 | WorkFolders.exe | Win11 24H2 | Unsigned | Host scan, Winbindex | |
| f9448a021fd5… | 10.0.19041.7802 | x64 | WorkFolders.exe | Win10 21H2 | Unsigned | Winbindex | |
| f1ebc3747037… | 10.0.17763.9376 | x64 | WorkFolders.exe | Win10 1809 | Unsigned | Winbindex | |
| a028e253b6e7… | 10.0.14393.9611 | x64 | WorkFolders.exe | Win10 1607 | Unsigned | Winbindex | |
| 99984a7cb6ab… | 10.0.26100.5074 | x64 | WorkFolders.exe | Win11 24H2, Win11 25H2 | Signed (Catalog file) | Winbindex | |
| e12b0b50df94… | 10.0.10240.20708 | x64 | WorkFolders.exe | Win10 1507 | Unsigned | Winbindex | |
| 010b3fe4355b… | 10.0.19041.1645 | x64 | WorkFolders.exe | Win10 20H2 … Win10 22H2 (3) | Unsigned | Winbindex | |
| dbc52ea81c33… | 10.0.18362.1645 | x64 | WorkFolders.exe | Win10 1909 | Unsigned | Winbindex | |
| 073a360ea35a… | 10.0.17134.1 | x64 | WorkFolders.exe | Win10 1803 | Unsigned | Winbindex | |
| 7ebcee9df1bf… | 10.0.15063.0 | x64 | WorkFolders.exe | Win10 1703 | Unsigned | Winbindex | |
| 87091f610f54… | 10.0.16299.1747 | x64 | WorkFolders.exe | Win10 1709 | Unsigned | Winbindex | |
| a4ed29118f6a… | 10.0.18362.778 | x64 | WorkFolders.exe | Win10 1903 | Unsigned | Winbindex | |
| abbb36facf65… | 10.0.10586.0 | x64 | WorkFolders.exe | Win10 1511 | Unsigned | Winbindex |
Winbindex builds link to the Microsoft symbol server copy that was hashed and parsed.