GridinSoft Threat Intelligence
Microsoft® Windows® Operating System threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as Trojan.ExtHeur!. 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
- Trojan.ExtHeur!
- Recommended action
- Scan and remove
- Last analysis
- 2026-05-24 22:00:17 (3 days ago)
- File hash
- d55612449f5b4960c33f07c9509c88e1
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as Trojan.ExtHeur!, part of the Trojan threat category.
Malware disguised as legitimate software or delivered through deceptive packaging. Related Trojan reports help compare this file with nearby detections, publishers, and hashes.
First seen 2026-05-24 22:00:17 (3 days ago); latest analysis 2026-05-24 22:00:17 (3 days ago).
Company metadata: Microsoft Corporation. Product metadata: Microsoft® Windows® Operating System.
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. Review the Trojan category for related samples and common context.
File context
Microsoft® Windows® Operating System is a Windows file recorded in the ThreatInfo database. It is associated with Microsoft® Windows® Operating System. The reported company name is Microsoft Corporation. The current detection status is Trojan.ExtHeur!, based on the latest analysis from 2026-05-24 22:00:17 (3 days ago). ThreatInfo groups this verdict with Trojan reports for broader family-level investigation.
If Microsoft® Windows® Operating System 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 Trojan.ExtHeur!.
File Details
| Product Name: | Microsoft® Windows® Operating System |
| Company Name: | Microsoft Corporation |
| MD5: | d55612449f5b4960c33f07c9509c88e1 |
| Size: | 120 KB |
| First Published: | 2026-05-24 22:00:17 (3 days ago) |
| Latest Published: | 2026-05-24 22:00:17 (3 days ago) |
| Status: | Trojan.ExtHeur! (on last analysis) | |
| Analysis Date: | 2026-05-24 22:00:17 (3 days 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.
Common Places:
| %commonappdata%\dell\saremediation\systemrepair\snapshots |
ThreatInfo has observed Microsoft® Windows® Operating System 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 Microsoft® Windows® Operating System across 1 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 100.0% 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 Microsoft® Windows® Operating System 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
Microsoft® Windows® Operating System is identified as pe for 64-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.
PE Sections:
Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.
312f41b45cbfd53e32a9200bf2cd1e18
ba340d91f2eadbd759a699320192f942
28a11da275c5953494467ad82789ca9d
ea54bcfa9304d969432e9926de4ec97a
c4717c50f7a2093c5a2327dd3619084c
5525358dcc82e51e87363b6f9ca6cb6b
78a321cf1c61e6cd1ea8b602a7e3efc9
fd52332f203a590f38755437f772e622
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
GridinSoft detects this file as Trojan.ExtHeur!
This report identifies Microsoft® Windows® Operating System by MD5 d55612449f5b4960c33f07c9509c88e1. It is part of the Trojan report group. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.