| File name: | WinThumbsPreloader.exe |
| Full analysis: | https://app.any.run/tasks/e0bf320b-b1d5-47bf-95b6-9f98858ac210 |
| Verdict: | Malicious activity |
| Analysis date: | January 23, 2024, 16:08:02 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | 1FC63431664FB5D405B3900081ECC8DE |
| SHA1: | 0DD3274D43A89C14833C1E92E1794F52AAFDDDBB |
| SHA256: | 798BDFB993305520D6E115FA75949769CFC1A74F8A2D399DA19FDECEE91419B2 |
| SSDEEP: | 1536:g7BdkwJ4vkpW1DlLRdkU+6sD25p6sD2O:g7BtJWkpwDlLRiUpIaYI7 |
MALICIOUS
Drops the executable file immediately after the start
- WinThumbsPreloader.exe (PID: 1036)
SUSPICIOUS
Reads settings of System Certificates
- WinThumbsPreloader.exe (PID: 1036)
Reads the Internet Settings
- WinThumbsPreloader.exe (PID: 1036)
INFO
Checks supported languages
- WinThumbsPreloader.exe (PID: 1036)
- wmpnscfg.exe (PID: 452)
Reads the computer name
- WinThumbsPreloader.exe (PID: 1036)
- wmpnscfg.exe (PID: 452)
Reads the machine GUID from the registry
- WinThumbsPreloader.exe (PID: 1036)
Reads Environment values
- WinThumbsPreloader.exe (PID: 1036)
Manual execution by a user
- wmpnscfg.exe (PID: 452)
- explorer.exe (PID: 2780)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (63.1) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (23.8) |
| .dll | | | Win32 Dynamic Link Library (generic) (5.6) |
| .exe | | | Win32 Executable (generic) (3.8) |
| .exe | | | Generic Win/DOS Executable (1.7) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2020:08:20 18:51:34+02:00 |
| ImageFileCharacteristics: | Executable, Large address aware |
| PEType: | PE32 |
| LinkerVersion: | 48 |
| CodeSize: | 75776 |
| InitializedDataSize: | 27136 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x1470a |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 1.0.1.0 |
| ProductVersionNumber: | 1.0.1.0 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| Comments: | Automatically preload Windows thumbnails for a directory and (optionally) subdirectories |
| CompanyName: | - |
| FileDescription: | WinThumbsPreloader |
| FileVersion: | 1.0.1 |
| InternalName: | WinThumbsPreloader.exe |
| LegalCopyright: | Copyright © 2018 Dmitry Bruhov |
| LegalTrademarks: | - |
| OriginalFileName: | WinThumbsPreloader.exe |
| ProductName: | WinThumbsPreloader |
| ProductVersion: | 1.0.1 |
| AssemblyVersion: | 1.0.1.0 |
Total processes
41
Monitored processes
3
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 452 | "C:\Program Files\Windows Media Player\wmpnscfg.exe" | C:\Program Files\Windows Media Player\wmpnscfg.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Media Player Network Sharing Service Configuration Application Exit code: 0 Version: 12.0.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 1036 | "C:\Users\admin\AppData\Local\Temp\WinThumbsPreloader.exe" | C:\Users\admin\AppData\Local\Temp\WinThumbsPreloader.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: WinThumbsPreloader Exit code: 0 Version: 1.0.1 Modules
| |||||||||||||||
| 2780 | "C:\Windows\explorer.exe" | C:\Windows\explorer.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Explorer Exit code: 1 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
Total events
3 256
Read events
3 242
Write events
14
Delete events
0
Modification events
| (PID) Process: | (1036) WinThumbsPreloader.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\182\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
Executable files
0
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
5
DNS requests
1
Threats
0
HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
1036 | WinThumbsPreloader.exe | 140.82.121.5:443 | api.github.com | GITHUB | US | unknown |
1080 | svchost.exe | 224.0.0.252:5355 | — | — | — | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
api.github.com |
| whitelisted |