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
- 2026-03-29 23:01:02 (2 months ago)
- File hash
- b27ddf8a164aeadd8580cb7ab9aa2ac8
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 2026-03-29 23:00:58 (2 months ago); latest analysis 2026-03-29 23:01:02 (2 months 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 2026-03-29 23:01:02 (2 months 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: | b27ddf8a164aeadd8580cb7ab9aa2ac8 |
| Size: | 2 MB |
| First Published: | 2026-03-29 23:00:58 (2 months ago) |
| Latest Published: | 2026-03-29 23:01:02 (2 months ago) |
| Status: | Trojan.ExtHeur! (on last analysis) | |
| Analysis Date: | 2026-03-29 23:01:02 (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.
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 Germany 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.
c75202234b36f060c5d99b5482e13796
5129283426fae99884e79ebc4eaca5c6
b8b4245683523fe8796590a59d69e795
e20aa917941298adbbde33fb85658217
aa9146839100df2c4722efff8cd1b5ab
ce4ec947bfa17e0945b032407353a8f2
059119382704bcb32727eafdbc385650
94fb3248c5a3ab88874fd5f10173aacd
0e0a72122ffc2ba3bf58321cdf733d3e
79dd6331c29412af972f439bc968bb74
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 b27ddf8a164aeadd8580cb7ab9aa2ac8. 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.