GridinSoft Threat Intelligence
librewolf.exe threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as Trojan.Heur!. 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.Heur!
- Recommended action
- Scan and remove
- Last analysis
- 2026-05-20 20:00:19 (a week ago)
- File hash
- 6451d123fbcc9b4250c6396788b58f49
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as Trojan.Heur!, 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 2026-05-20 20:00:19 (a week ago); latest analysis 2026-05-20 20:00:19 (a week ago).
Company metadata: Mozilla Corporation. Product metadata: LibreWolf.
Signed by OSSign (Scheibling Consulting AB). The signature is reported as valid, but signed files can still be bundled or abused.
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
librewolf.exe is a Windows file recorded in the ThreatInfo database. It is associated with LibreWolf. The reported company name is Mozilla Corporation. The current detection status is Trojan.Heur!, based on the latest analysis from 2026-05-20 20:00:19 (a week ago). ThreatInfo groups this verdict with Trojan reports for broader family-level investigation.
If librewolf.exe 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.Heur!.
File Details
| Product Name: | LibreWolf |
| Company Name: | Mozilla Corporation |
| MD5: | 6451d123fbcc9b4250c6396788b58f49 |
| Size: | 515 KB |
| First Published: | 2026-05-20 20:00:19 (a week ago) |
| Latest Published: | 2026-05-20 20:00:19 (a week ago) |
| Status: | Trojan.Heur! (on last analysis) | |
| Analysis Date: | 2026-05-20 20:00:19 (a week 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: | OSSign (Scheibling Consulting AB) |
| Status: | Valid |
The signature on librewolf.exe 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:
| %programfiles% |
ThreatInfo has observed librewolf.exe 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 librewolf.exe 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 Canada 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 librewolf.exe 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
librewolf.exe is identified as pe for 64-bit systems. The subsystem is Windows GUI. 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.
5a58d6a820b0caee71de7134b709fab4
6f403555aa74b2f49ab1e788b1e439a6
680f1cd037c992eb6ee928865f779d4f
5953aadc1be789e74d93c39a4182e898
bf619eac0cdf3f68d496ea9344137e8b
4baa2c8ee02c808b28245cdec4683a0b
6334e0d488af6e7d573ce60ebf29f167
8b32bab05a1d0c35aab3c1daf0d72eb2
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.Heur!
This report identifies librewolf.exe by MD5 6451d123fbcc9b4250c6396788b58f49. 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.