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wcinstaller.exe

Web Companion Installer

Lavasoft Limited

The application wcinstaller.exe by Lavasoft Limited has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a self-extracting archive and installer and has been known to bundle potentially unwanted software. The file has been seen being downloaded from webcompanion.com and multiple other hosts.
Publisher:
Lavasoft  (signed by Lavasoft Limited)

Product:
Web Companion Installer

Version:
2.3.1441.2805

MD5:
e8786d1a1da097e8a32fe0e2de68ae5f

SHA-1:
9c7fcf1475675054bb53d821eb80f530fe17d824

SHA-256:
e2f8b523ce28329d9b9676c9f1182bac96bd5f9b7f922e1e997326d03dac6781

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
11/15/2024 11:40:17 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebCompanion (M)
16.8.10.13

File size:
334.7 KB (342,688 bytes)

Product version:
2.3.1441.2805

Copyright:
c Lavasoft Limited. All Rights Reserved.

Original file name:
Installer.exe

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\wcinstaller.exe

Digital Signature
Signed by:
Lavasoft Limited

Authority:
Symantec Corporation

Valid from:
2/20/2015 8:00:00 AM

Valid to:
3/15/2017 7:59:59 AM

Subject:
CN=Lavasoft Limited, O=Lavasoft Limited, L=Sliema, S=Malta, C=MT

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
35F57ADDEF0015E6FEBE6AE2710D4873

File PE Metadata
Compilation timestamp:
11/19/2010 12:27:35 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:u1OgDPdkBAFZWjadD4sKR4q8LMPN7HEqjijdCQfQw4LqZ2:u1OgLda/4T+7HErRNfQwwqZ2

Entry address:
0x14B04

Entry point:
55, 8B, EC, 6A, FF, 68, E0, B9, 41, 00, 68, 2C, 4A, 41, 00, 64, A1, 00, 00, 00, 00, 50, 64, 89, 25, 00, 00, 00, 00, 83, EC, 58, 53, 56, 57, 89, 65, E8, FF, 15, 74, B0, 41, 00, 33, D2, 8A, D4, 89, 15, D0, 33, 42, 00, 8B, C8, 81, E1, FF, 00, 00, 00, 89, 0D, CC, 33, 42, 00, C1, E1, 08, 03, CA, 89, 0D, C8, 33, 42, 00, C1, E8, 10, A3, C4, 33, 42, 00, 6A, 01, E8, 96, 0E, 00, 00, 59, 85, C0, 75, 08, 6A, 1C, E8, C3, 00, 00, 00, 59, E8, 48, 09, 00, 00, 85, C0, 75, 08, 6A, 10, E8, B2, 00, 00, 00, 59, 33, F6, 89, 75...
 
[+]

Entropy:
7.3140

Developed / compiled with:
Microsoft Visual C++ v6.0

Code size:
102.5 KB (104,960 bytes)

The file wcinstaller.exe has been seen being distributed by the following 2 URLs.

http://webcompanion.com/nano_download.php?partner=PT160301CAM

https://webcompanion.com/nano_download.php?partner=PT160301CAM

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