System.IO.FileSystem.Primitives (1).dll threat report
ThreatInfo file report
System.IO.FileSystem.Primitives (1).dll
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as Adware.SweetIM. Download GridinSoft Anti-Malware to scan the device, confirm whether this file is present, and remove the detected object if it is found.
- Detection name
- Adware.SweetIM
- Recommended action
- Scan and remove
- Last analysis
- 2026-03-21 23:01:22 (2 months ago)
- File hash
- 6f4adb0044dec78f2a9cc774d36e88b9
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as Adware.SweetIM.
First seen 2017-08-11 01:00:52 (8 years ago); latest analysis 2026-03-21 23:01:22 (2 months ago).
Company metadata: Microsoft Corporation. Product metadata: Microsoft® .NET Framework.
Signed by SweetLabs Inc.. The signature is reported as valid, but signed files can still be bundled or abused.
This hash has appeared under multiple file names, which can happen with repackaging, bundling, or deliberate renaming.
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
- Compare the MD5 above with the file found on the device.
- Check whether the file appears in the observed locations or under one of the alternate names.
- Run GridinSoft Anti-Malware to confirm the detection and remove the file if it is present.
File context
System.IO.FileSystem.Primitives (1).dll is a Windows file recorded in the ThreatInfo database. It is associated with Microsoft® .NET Framework. The reported company name is Microsoft Corporation. The current detection status is Adware.SweetIM, based on the latest analysis from 2026-03-21 23:01:22 (2 months ago).
If System.IO.FileSystem.Primitives (1).dll appears on your computer unexpectedly, treat it as suspicious. Check its location, digital signature, and recent system changes before allowing it to run. A full anti-malware scan is recommended when this file is detected as Adware.SweetIM.
File Details
| Product Name: | Microsoft® .NET Framework |
| Company Name: | Microsoft Corporation |
| MD5: | 6f4adb0044dec78f2a9cc774d36e88b9 |
| Size: | 22 KB |
| First Published: | 2017-08-11 01:00:52 (8 years ago) |
| Latest Published: | 2026-03-21 23:01:22 (2 months ago) |
| Status: | Adware.SweetIM (on last analysis) | |
| Analysis Date: | 2026-03-21 23:01:22 (2 months ago) |
Detection screenshot
The screenshot is a visual record of a GridinSoft Anti-Malware detection for this sample. Use the hash and metadata above as the primary identifiers when comparing the file on your system.
Overview
| Signed By: | SweetLabs Inc. |
| Status: | Valid |
The signature on System.IO.FileSystem.Primitives (1).dll is reported as valid. A valid signature helps confirm publisher identity, but it does not automatically make the file safe if the installer was bundled, abused, or downloaded from an untrusted source.
Common Places:
| %localappdata%\host app service\swbd |
| %sysdrive%\adwcleaner\quarantine\rywtiizs2t\swbd |
| %sysdrive%\adwcleaner\quarantine\3solbph71y\swbd |
| %sysdrive%\adwcleaner\quarantine\fraqbc8wsa\swbd |
| %sysdrive%\windows.old\users\namng\appdata\local\host app service\swbd |
| %sysdrive%\adwcleaner\quarantine\x3cf3ednhm\swbd |
| %sysdrive%\adwcleaner\quarantine\1xvpfvjcrg\swbd |
| %sysdrive%\adwcleaner\quarantine\rqf69azbla |
| %sysdrive%\adwcleaner\quarantine\rywtiizs2t |
| %localappdata%\host app service |
ThreatInfo has observed System.IO.FileSystem.Primitives (1).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.
File Names:
| System.IO.FileSystem.Primitives.dll |
| System.IO.FileSystem.Primitives (1).dll |
This hash has been seen with multiple file names. Alternate names can appear when software is updated, copied between folders, packed by an installer, or deliberately renamed to avoid recognition. Compare the exact MD5 above before assuming two names refer to the same file.
Geography:
| 11.8% | ||
| 7.1% | ||
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The strongest geographic signal for this file is United States with 11.8% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.
OS Version:
| Windows 10 | 100.0% |
The most common operating system signal for System.IO.FileSystem.Primitives (1).dll is Windows 10 with 100.0% 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.IO.FileSystem.Primitives (1).dll is identified as pe for 32 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.
| Subsystem: | Windows CUI |
| PE Type: | pe |
| OS Bitness: | 32 |
| Image Base: | 0x10000000 |
| Entry Address: | 0x00002876 |
.NET Info:
| MVID: | f81f4e02-187e-41cf-89eb-af2fc82ac630 |
PE Sections:
| Name | Size of data | MD5 |
| .text | 2560 | daa86ea8fd543b7171d9035d23c39206 |
| .rsrc | 3072 | 2f5727c13a9029b6bc69e9f973bce02e |
| .reloc | 512 | d324ba3e80e04a67a9c3fe163e59fda0 |
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.
More information:
