GridinSoft Threat Intelligence
System.ServiceModel.Duplex.dll file report
Why it matters
Evidence available for this file
No final classification is available yet.
First seen 2020-10-15 13:22:52 (5 years ago); latest analysis 2026-01-31 23:01:23 (4 months ago).
Company metadata: Microsoft Corporation. Product metadata: Microsoft® .NET Core.
ThreatInfo has seen this file in user or system paths listed below. Unexpected locations increase the need for local verification.
Recommended action
What to do next
- Use the hash and metadata below to verify the exact file identity.
- Review publisher, signature, paths, and PE details for inconsistencies.
- Run a local scan if the file appears unexpectedly or starts with Windows.
File context
System.ServiceModel.Duplex.dll is a Windows file recorded in the ThreatInfo database. It is associated with Microsoft® .NET Core. The reported company name is Microsoft Corporation. The current detection status is Undefined, based on the latest analysis from 2026-01-31 23:01:23 (4 months ago).
ThreatInfo does not have a final classification for this file yet. Use the technical details below to compare the hash, size, signature, and observed locations with the copy found on your device.
File Details
| Product Name: | Microsoft® .NET Core |
| Company Name: | Microsoft Corporation |
| MD5: | 118ee20f1160428ec506f9fe57c80225 |
| Size: | 5 KB |
| First Published: | 2020-10-15 13:22:52 (5 years ago) |
| Latest Published: | 2026-01-31 23:01:23 (4 months ago) |
| Status: | Undefined (on last analysis) | |
| Analysis Date: | 2026-01-31 23:01:23 (4 months ago) |
Common Places:
| %programfiles% |
| %commonappdata%\totalav\updates\5_17_470 |
ThreatInfo has observed System.ServiceModel.Duplex.dll in the locations listed above. Files found in temporary folders, user profile folders, startup locations, or unusual application directories should be reviewed more carefully than files installed under a known program directory.
Geographic signal
Observed country distribution
ThreatInfo has seen System.ServiceModel.Duplex.dll across 56 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is United States with 11.5% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.
OS Version:
The most common operating system signal for System.ServiceModel.Duplex.dll is Windows 10 with 90.3% of observed hits. If your system differs from the common profile, check whether the file was introduced by a specific installer, archive, or removable device.
Analysis
System.ServiceModel.Duplex.dll is identified as pe for 32-bit systems. The subsystem is Windows CUI. PE header values are useful for triage, especially when they do not match the expected publisher, product, or release timeline.
.NET Info:
| MVID: | 325420a3-b267-4d7d-a941-6920c577ed17 |
PE Sections:
Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.
596f47622ab0afc4a85a3665ba32868c
84d6cc7ef40e0226a01e44a7bdcd755c
a72685d9eb863711c4b63f1c58c7c60b
PE section names and hashes can reveal packing, injected resources, or unusual build artifacts. Sections with uncommon names, very large raw data, or hashes that differ from a trusted copy deserve additional review.
Report conclusion
This file is still under review
ThreatInfo has not assigned a final verdict yet. Compare the file hash, location, signature, and publisher before trusting the file on a production system.