| File name: | OBUpdateService.exe |
| Full analysis: | https://app.any.run/tasks/ed49a57e-60fd-4da8-9708-c77c7c1ba066 |
| Verdict: | Malicious activity |
| Analysis date: | March 09, 2026, 13:51:39 |
| OS: | Windows 10 Professional (build: 19044, 64 bit) |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows, 5 sections |
| MD5: | 758AD54819CF8626D26AE1FEE346A503 |
| SHA1: | 1AB72015F2BBB7EC1B156E00816AAF5B0630AAD2 |
| SHA256: | 4779DB5EB5116033E0F2E5D7FDA041A4887830C778319D55B0BBBEF55A6A0E7F |
| SSDEEP: | 98304:vs0nV7xpQEEfc3+CphLLiLLLWUPGWtZNPGlRGzJrUdckDh90+q6BsKIQdLdHFqvR:ynMdr2NND |
MALICIOUS
Signed with known abused certificate
- cmd.exe (PID: 4304)
Executing a file with an untrusted certificate
- OBUpdateService.exe (PID: 8300)
- OBUpdateService.exe (PID: 5732)
- OBUpdateService.exe (PID: 2900)
SUSPICIOUS
The executable file from the user directory is run by the CMD process
- OBUpdateService.exe (PID: 8300)
Executable started from TEMP via cmd.exe
- cmd.exe (PID: 4304)
Searches for installed software
- OBUpdateService.exe (PID: 8300)
INFO
The sample compiled with english language support
- cmd.exe (PID: 4304)
Reads the computer name
- OBUpdateService.exe (PID: 8300)
Checks supported languages
- OBUpdateService.exe (PID: 8300)
- OBUpdateService.exe (PID: 5732)
- OBUpdateService.exe (PID: 2900)
Reads Windows Product ID
- OBUpdateService.exe (PID: 8300)
Create files in a temporary directory
- OBUpdateService.exe (PID: 8300)
Manual execution by a user
- notepad++.exe (PID: 3092)
- OBUpdateService.exe (PID: 5732)
- OBUpdateService.exe (PID: 2900)
- Taskmgr.exe (PID: 7976)
- Taskmgr.exe (PID: 2036)
- notepad++.exe (PID: 9084)
Checks proxy server information
- slui.exe (PID: 8364)
Reads security settings of Internet Explorer
- Taskmgr.exe (PID: 2036)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win32 Executable (generic) (52.9) |
|---|---|---|
| .exe | | | Generic Win/DOS Executable (23.5) |
| .exe | | | DOS Executable Generic (23.5) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2025:08:02 11:07:59+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 14.44 |
| CodeSize: | 2499584 |
| InitializedDataSize: | 815104 |
| UninitializedDataSize: | - |
| EntryPoint: | 0xb998a |
| OSVersion: | 6 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 1.3.81.10 |
| ProductVersionNumber: | 1.3.81.10 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Windows NT 32-bit |
| ObjectFileType: | Unknown |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Unicode |
| CompanyName: | WORK PRODUCT, INC. |
| FileDescription: | OneBrowser Installer |
| FileVersion: | 1.3.81.10 |
| InternalName: | OneBrowser Installer |
| LegalCopyright: | Copyright 2025 WORK PRODUCT, INC. |
| OriginalFileName: | OBUpdateService.exe |
| ProductName: | OneBrowser Update |
| ProductVersion: | 1.3.81.10 |
Total processes
160
Monitored processes
10
Malicious processes
2
Suspicious processes
2
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 824 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2036 | "C:\WINDOWS\system32\taskmgr.exe" /4 | C:\Windows\System32\Taskmgr.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Task Manager Exit code: 0 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2900 | "C:\Users\admin\AppData\Local\Temp\OBUpdateService.exe" | C:\Users\admin\AppData\Local\Temp\OBUpdateService.exe | — | explorer.exe | |||||||||||
User: admin Company: WORK PRODUCT, INC. Integrity Level: MEDIUM Description: OneBrowser Installer Exit code: 0 Version: 1.3.81.10 Modules
| |||||||||||||||
| 3092 | "C:\Program Files\Notepad++\notepad++.exe" "C:\Users\admin\AppData\Local\Temp\739e1002_OBUpdate.conf" | C:\Program Files\Notepad++\notepad++.exe | explorer.exe | ||||||||||||
User: admin Company: Don HO don.h@free.fr Integrity Level: MEDIUM Description: Notepad++ : a free (GNU) source code editor Exit code: 0 Version: 7.91 Modules
| |||||||||||||||
| 4304 | "C:\Windows\System32\cmd.exe" /k C:\Users\admin\AppData\Local\Temp\OBUpdateService.exe | C:\Windows\System32\cmd.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 3221225786 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5732 | "C:\Users\admin\AppData\Local\Temp\OBUpdateService.exe" | C:\Users\admin\AppData\Local\Temp\OBUpdateService.exe | explorer.exe | ||||||||||||
User: admin Company: WORK PRODUCT, INC. Integrity Level: HIGH Description: OneBrowser Installer Exit code: 0 Version: 1.3.81.10 Modules
| |||||||||||||||
| 7976 | "C:\WINDOWS\system32\taskmgr.exe" /4 | C:\Windows\System32\Taskmgr.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Task Manager Exit code: 3221226540 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 8300 | C:\Users\admin\AppData\Local\Temp\OBUpdateService.exe | C:\Users\admin\AppData\Local\Temp\OBUpdateService.exe | cmd.exe | ||||||||||||
User: admin Company: WORK PRODUCT, INC. Integrity Level: MEDIUM Description: OneBrowser Installer Exit code: 1 Version: 1.3.81.10 Modules
| |||||||||||||||
| 8364 | C:\WINDOWS\System32\slui.exe -Embedding | C:\Windows\System32\slui.exe | svchost.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Activation Client Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 9084 | "C:\Program Files\Notepad++\notepad++.exe" "C:\Users\admin\AppData\Local\Temp\739e1002_OBUpdate.conf" | C:\Program Files\Notepad++\notepad++.exe | explorer.exe | ||||||||||||
User: admin Company: Don HO don.h@free.fr Integrity Level: MEDIUM Description: Notepad++ : a free (GNU) source code editor Exit code: 0 Version: 7.91 Modules
| |||||||||||||||
Total events
7 457
Read events
7 452
Write events
4
Delete events
1
Modification events
| (PID) Process: | (8300) OBUpdateService.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\OneBrowser |
| Operation: | write | Name: | 739e1002_installId |
Value: afa01e0189311774f188b340a2c81e7b2368501edf7ff46b0ca50f757ee5099e | |||
| (PID) Process: | (5732) OBUpdateService.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\OneBrowser |
| Operation: | write | Name: | hb |
Value: 1 | |||
| (PID) Process: | (2036) Taskmgr.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\TaskManager |
| Operation: | delete value | Name: | Preferences |
Value: | |||
| (PID) Process: | (2036) Taskmgr.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\TaskManager |
| Operation: | write | Name: | Preferences |
Value: 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| |||
Executable files
0
Suspicious files
0
Text files
8
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3092 | notepad++.exe | C:\Users\admin\AppData\Roaming\Notepad++\langs.xml | xml | |
MD5:FE22EC5755BC98988F9656F73B2E6FB8 | SHA256:F972C425CE176E960F6347F1CA2F64A8CE2B95A375C33A03E57538052BA0624D | |||
| 3092 | notepad++.exe | C:\Users\admin\AppData\Roaming\Notepad++\session.xml | text | |
MD5:EA9FE896B4305C2A9629FEB279084544 | SHA256:EF99FB4EFE424FABB1F3CD0076CC532EF5767D6CD1D09611C4F69F1BE03702B6 | |||
| 3092 | notepad++.exe | C:\Users\admin\AppData\Roaming\Notepad++\plugins\config\converter.ini | text | |
MD5:F70F579156C93B097E656CABA577A5C9 | SHA256:B926498A19CA95DC28964B7336E5847107DD3C0F52C85195C135D9DD6CA402D4 | |||
| 2036 | Taskmgr.exe | C:\Users\admin\AppData\Local\D3DSCache\3534848bb9f4cb71\F4EB2D6C-ED2B-4BDD-AD9D-F913287E6768.lock | text | |
MD5:F49655F856ACB8884CC0ACE29216F511 | SHA256:7852FCE59C67DDF1D6B8B997EAA1ADFAC004A9F3A91C37295DE9223674011FBA | |||
| 3092 | notepad++.exe | C:\Users\admin\AppData\Roaming\Notepad++\config.xml | xml | |
MD5:A2ED875AA42589077C4D08F4F8912018 | SHA256:77B0174D655F327C1FC9520B4F8831ECD82E98351B26BB9C2EDD98FF0CD63A2D | |||
| 3092 | notepad++.exe | C:\Users\admin\AppData\Roaming\Notepad++\shortcuts.xml | text | |
MD5:F11D96162BC521F5CF49FFE6B6841C9B | SHA256:BE9AEAEAB5A2E4899BA7E582274BA592C1B9BAF688B340A754B8EF32B23CFA9C | |||
| 3092 | notepad++.exe | C:\Users\admin\AppData\Roaming\Notepad++\stylers.xml | xml | |
MD5:312281C4126FA897EF21A7E8CCB8D495 | SHA256:53B4BE3ED1CFD712E53542B30CFE30C5DB35CC48BE7C57727DFEC26C9E882E90 | |||
| 8300 | OBUpdateService.exe | C:\Users\admin\AppData\Local\Temp\739e1002_OBUpdate.conf | xml | |
MD5:AE47A0ED25EB24F657B43F056295933D | SHA256:68B5E83354E683BE46AD0D4E75D330D23A0DF7AC3E3C8A86A45D6F126CF2A7EC | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
42
TCP/UDP connections
44
DNS requests
27
Threats
1
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
6768 | MoUsoCoreWorker.exe | GET | 304 | 40.127.240.158:443 | https://settings-win.data.microsoft.com/settings/v3.0/OneSettings/Client?OSVersionFull=10.0.19045.4046.amd64fre.vb_release.191206-1406&LocalDeviceID=s%3ABAD99146-31D3-4EC6-A1A4-BE76F32BA5D4&FlightRing=Retail&AttrDataVer=186&OSUILocale=en-US&OSSkuId=48&App=WOSC&AppVer=&IsFlightingEnabled=0&TelemetryLevel=1&DeviceFamily=Windows.Desktop | unknown | — | — | whitelisted |
7428 | svchost.exe | GET | 304 | 40.127.240.158:443 | https://settings-win.data.microsoft.com/settings/v3.0/WSD/UpdateHealthTools?os=Windows&osVer=10.0.19041.1.amd64fre.vb_release.191206-&sku=48&deviceClass=Windows.Desktop&locale=en-US&deviceId=s:BAD99146-31D3-4EC6-A1A4-BE76F32BA5D4&sampleId=s:95271487&appVer=10.0.19041.3626&FlightRing=Retail&TelemetryLevel=1&HidOverGattReg=C%3A%5CWINDOWS%5CSystem32%5CDriverStore%5CFileRepository%5Chidbthle.inf_amd64_9610b4821fdf82a5%5CMicrosoft.Bluetooth.Profiles.HidOverGatt.dll&AppVer=&ProcessorIdentifier=AMD64%20Family%2023%20Model%201%20Stepping%202&OEMModel=DELL&UpdateOfferedDays=4294967295&ProcessorManufacturer=AuthenticAMD&InstallDate=1661339444&OEMModelBaseBoard=&BranchReadinessLevel=CB&OEMSubModel=J5CR&IsCloudDomainJoined=0&DeferFeatureUpdatePeriodInDays=30&IsDeviceRetailDemo=0&FlightingBranchName=&OSUILocale=en-US&DeviceFamily=Windows.Desktop&WuClientVer=10.0.19041.3996&UninstallActive=1&IsFlightingEnabled=0&OSSkuId=48&ProcessorClockSpeed=3094&TotalPhysicalRAM=6144&SecureBootCapable=0&App=SedimentPack&ProcessorCores=6&CurrentBranch=vb_release&InstallLanguage=en-US&DeferQualityUpdatePeriodInDays=0&OEMName_Uncleaned=DELL&TPMVersion=0&PrimaryDiskTotalCapacity=262144&InstallationType=Client&AttrDataVer=186&ProcessorModel=AMD%20Ryzen%205%203500%206-Core%20Processor&IsEdgeWithChromiumInstalled=1&OSVersion=10.0.19045.4046&IsMDMEnrolled=0&ActivationChannel=Retail&FirmwareVersion=A.40&TrendInstalledKey=1&OSArchitecture=AMD64&DefaultUserRegion=244&UpdateManagementGroup=2 | unknown | — | — | whitelisted |
— | — | GET | 200 | 204.79.197.203:80 | http://oneocsp.microsoft.com/ocsp/MFQwUjBQME4wTDAJBgUrDgMCGgUABBQ3L3%2F%2Fa6ADK8NraY2GXzVaYrHG4AQUb6t%2B2v%2BXQ3LsO2d33oJhNYhHQoUCEzMAAAAGb6JMMcOVb6sAAAAAAAY%3D | unknown | — | — | whitelisted |
— | — | GET | 200 | 184.30.131.245:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAjTxtAB8my1oj8MfWpz%2F7Y%3D | unknown | — | — | whitelisted |
356 | svchost.exe | POST | 200 | 20.190.160.17:443 | https://login.live.com/RST2.srf | unknown | xml | 1.24 Kb | whitelisted |
3036 | SIHClient.exe | GET | 304 | 20.165.94.63:443 | https://slscr.update.microsoft.com/SLS/%7B522D76A4-93E1-47F8-B8CE-07C937AD1A1E%7D/x64/10.0.19045.4046/0?CH=686&L=en-US&P=&PT=0x30&WUA=10.0.19041.3996&MK=DELL&MD=DELL | unknown | — | — | whitelisted |
3036 | SIHClient.exe | GET | 200 | 135.232.92.97:443 | https://fe3cr.delivery.mp.microsoft.com/clientwebservice/ping | unknown | — | — | whitelisted |
356 | svchost.exe | POST | 400 | 20.190.160.17:443 | https://login.live.com/ppsecure/deviceaddcredential.srf | unknown | text | 203 b | whitelisted |
356 | svchost.exe | POST | 400 | 20.190.160.17:443 | https://login.live.com/ppsecure/deviceaddcredential.srf | unknown | text | 203 b | whitelisted |
3036 | SIHClient.exe | GET | 200 | 20.165.94.63:443 | https://slscr.update.microsoft.com/sls/ping | unknown | — | — | whitelisted |
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 | 192.168.100.255:137 | — | Not routed | — | whitelisted |
7428 | svchost.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
5520 | RUXIMICS.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
6768 | MoUsoCoreWorker.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
5568 | SearchApp.exe | 2.16.241.225:443 | www.bing.com | AKAMAI-ASN1 | NL | whitelisted |
— | — | 184.30.131.245:80 | ocsp.digicert.com | AKAMAI-AS | US | whitelisted |
— | — | 204.79.197.203:80 | oneocsp.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
— | — | 172.211.123.248:443 | client.wns.windows.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
4 | System | 192.168.100.255:138 | — | Not routed | — | whitelisted |
356 | svchost.exe | 20.190.160.17:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
www.bing.com |
| whitelisted |
self.events.data.microsoft.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
oneocsp.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
client.wns.windows.com |
| whitelisted |
login.live.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
7428 | svchost.exe | Unknown Traffic | ET USER_AGENTS Microsoft Dr Watson User-Agent (MSDW) |
Process | Message |
|---|---|
notepad++.exe | VerifyLibrary: C:\Program Files\Notepad++\SciLexer.dll
|
notepad++.exe | VerifyLibrary: certificate revocation checking is disabled
|
notepad++.exe | ED255D9151912E40DF048A56288E969A8D0DAFA3
|
notepad++.exe | VerifyLibrary: certificate revocation checking is disabled
|
notepad++.exe | VerifyLibrary: C:\Program Files\Notepad++\updater\gup.exe
|
notepad++.exe | VerifyLibrary: error while getting certificate informations
|
notepad++.exe | VerifyLibrary: certificate revocation checking is disabled
|
notepad++.exe | VerifyLibrary: C:\Program Files\Notepad++\SciLexer.dll
|
notepad++.exe | ED255D9151912E40DF048A56288E969A8D0DAFA3
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notepad++.exe | VerifyLibrary: certificate revocation checking is disabled
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