GridinSoft Threat Intelligence
WebCompanionInstaller.exe file report
Why it matters
Evidence available for this file
No final classification is available yet.
First seen 2018-02-20 07:08:11 (8 years ago); latest analysis 2021-06-11 20:41:54 (4 years ago).
Company metadata: Lavasoft. Product metadata: Web Companion.
Signed by Lavasoft Software Canada. The signature is not reported as trusted and valid, which can indicate tampering, repackaging, or copied publisher data.
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
WebCompanionInstaller.exe is a Windows file recorded in the ThreatInfo database. It is associated with Web Companion. The reported company name is Lavasoft. The current detection status is Undefined, based on the latest analysis from 2021-06-11 20:41:54 (4 years 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: | Web Companion |
| Company Name: | Lavasoft |
| MD5: | 4183e5c35f801d688e241cec8af18b6e |
| Size: | 315 KB |
| First Published: | 2018-02-20 07:08:11 (8 years ago) |
| Latest Published: | 2021-06-11 20:41:54 (4 years ago) |
| Status: | Undefined (on last analysis) | |
| Analysis Date: | 2021-06-11 20:41:54 (4 years ago) |
Overview
| Signed By: | Lavasoft Software Canada |
| Status: | Invalid (digital signature could be stolen or file could be patched) |
The signature on WebCompanionInstaller.exe is not reported as trusted and valid. Invalid or suspicious signature data can indicate tampering, repackaging, or an unrelated file using copied publisher information.
Common Places:
| %temp%\webcompanion.zip |
| %programfiles%\lavasoft\web companion |
| %windir%\temp\webcompanion.zip |
| %sysdrive%\adwcleaner\quarantine\3solbph71y |
| %sysdrive%\adwcleaner\quarantine\x3cf3ednhm |
| %sysdrive%\adwcleaner\quarantine\rqf69azbla |
ThreatInfo has observed WebCompanionInstaller.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 WebCompanionInstaller.exe across 25 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is Brazil with 35.4% 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 WebCompanionInstaller.exe is Windows 10 with 61.0% 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
WebCompanionInstaller.exe is identified as pe for 32-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.
.NET Info:
| MVID: | 858cd2c8-2dd2-4df3-a22c-139b82645725 |
PE Sections:
Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.
15dd2525dd0634613dcc0636891f2664
8eb52c3c481d537382971276ea13989e
b6ab2f6e9c0af3f0915b6935a58f1f29
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.