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wsetup.exe

MyStart Toolbar

Visicom Media Inc.

This is part of the Visicom VMN web browser toolbar and extension that will modify the browser's default search provider, DNS, and home page functions. The application wsetup.exe, “MyStart Toolbar Installer” by Visicom Media has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. It is also typically executed from the user's temporary directory. The file has been seen being downloaded from installer.manycam.com.
Publisher:
Visicom Media Inc.  (signed and verified)

Product:
MyStart Toolbar

Description:
MyStart Toolbar Installer

Version:
5.4

MD5:
607b5a6678b1cdbe7de4d10495e7c05c

SHA-1:
6e5130d511ff616132cd25ef7ac6a62d3f1a5d02

SHA-256:
ae4d5630072e2597c5108a237a02bdb19b2fc121cba6aaa7c38999ad93783936

Scanner detections:
1 / 68

Status:
Potentially unwanted

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Analysis date:
4/25/2024 9:04:33 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Visicom.VisicomMedia.Installer (M)
16.1.31.1

File size:
5.1 MB (5,381,024 bytes)

Product version:
5.4.4.1

Copyright:
© Visicom Media Inc.

Trademarks:
Visicom Media Inc., All Rights Reserved

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\wsetup.exe

Digital Signature
Signed by:
Visicom Media Inc.

Authority:
Thawte, Inc.

Valid from:
5/8/2014 2:00:00 AM

Valid to:
6/21/2016 1:59:59 AM

Subject:
CN=Visicom Media Inc., OU=SECURE APPLICATION DEVELOPMENT, O=Visicom Media Inc., L=Brossard, S=Quebec, C=CA

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
266F9E30991B0C3EFC03DA9B8CDDB68D

File PE Metadata
Compilation timestamp:
12/5/2009 11:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
98304:NYBjEaVG8xq5ivk1p2sW4PwhJox+SNRiS5cS9Ff2KvzEQcxA750:gjB+5icn2stPwlElX2KrEQcD

Entry address:
0x323C

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 30, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 58, 3F, 42, 00, E8, 09, 2C, 00, 00, A3, A4, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 58, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, B8, 91, 40, 00, 68, A0, 36, 42, 00, E8, BC, 28, 00, 00, FF, 15, B0, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, AA, 28, 00, 00...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file wsetup.exe has been seen being distributed by the following URL.

http://installer.manycam.com/.../mystartTb_manycam_5240.exe

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