How to remove WcInstaller.exe
WcInstaller.exe
The module WcInstaller.exe has been detected as PUP.WebCompanion
WcInstaller.exe is a Windows file recorded in the ThreatInfo database. It is associated with Web Companion Installer. The reported company name is Lavasoft. The current detection status is PUP.WebCompanion, based on the latest analysis from 2026-04-27 23:00:31 (a week ago).
If WcInstaller.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 PUP.WebCompanion.
File Details
| Product Name: | Web Companion Installer |
| Company Name: | Lavasoft |
| MD5: | 751c71eabaf9c4ddef45d6072458162a |
| Size: | 546 KB |
| First Published: | 2022-12-04 23:20:59 (3 years ago) |
| Latest Published: | 2026-04-27 23:00:31 (a week ago) |
| Status: | PUP.WebCompanion (on last analysis) | |
| Analysis Date: | 2026-04-27 23:00:31 (a week ago) |
Overview
| Signed By: | Lavasoft Software Canada Inc. |
| Status: | Valid |
The signature on WcInstaller.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:
| %temp% |
| %temp% |
| %temp% |
| %sysdrive%\$recycle.bin\s-1-5-21-1878488958-1882295044-2939713594-1014 |
| %temp% |
| %temp% |
| %temp% |
| %temp% |
| %programfiles% |
| %temp% |
ThreatInfo has observed WcInstaller.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.
Geography:
| 40.9% | ||
| 13.6% | ||
| 9.1% | ||
| 4.5% | ||
| 4.5% | ||
| 4.5% | ||
| 4.5% | ||
| 2.3% | ||
| 2.3% | ||
| 2.3% | ||
| 2.3% | ||
| 2.3% | ||
| 2.3% | ||
| 2.3% | ||
| 2.3% |
The strongest geographic signal for this file is United States with 40.9% 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 | 97.7% | |
| Windows 7 | 2.3% |
The most common operating system signal for WcInstaller.exe is Windows 10 with 97.7% 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
WcInstaller.exe is identified as pe for 32 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.
| Subsystem: | Windows GUI |
| PE Type: | pe |
| OS Bitness: | 32 |
| Image Base: | 0x00400000 |
| Entry Address: | 0x000148d4 |
PE Sections:
| Name | Size of data | MD5 |
| .text | 104448 | 206b62d600beb166f8bf863ad5301f8c |
| .rdata | 17920 | b0314f39355cab7d4674a0928d3b15f2 |
| .data | 12800 | 8d44c03d32e0c923339cda9fae15827a |
| .sxdata | 512 | 35925cfdc1176bd9ffc634a58b40ec17 |
| .rsrc | 29184 | 3bed195f283d3da4cb0903c4a127fa43 |
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:
