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download.exe

WinterSoft

This uses the software InstalleRex download manager which bundles a number of adware plugin and browser extensions and is distributed via TusFiles. The application download.exe, “Installer for WinterSoft” has been detected as adware by 21 anti-malware scanners. The program is a setup application that uses the Tarma Installer installer, however the file is not signed with an authenticode signature from a trusted source. The setup program uses Web-Pick's InstalleRex download manager and installer to bundle potentially unwanted ad-supported software which includes toolbars and browser extensions through a pay-per-install monetization scheme.
Publisher:
WinterSoft

Product:
WinterSoft

Description:
Installer for WinterSoft

Version:
2013.10.31.1157

MD5:
8151e1d4ceb2d4d1ffb8b49e2c46f2d5

SHA-1:
7bb17a404cef70e2a5f740d93b830f40f3f24be5

SHA-256:
425d61f503f4577a66f7a0b2a2e6addc6d01492d69ae09e444753bf12b78cd2e

Scanner detections:
21 / 68

Status:
Adware

Explanation:
Uses the InstalleRex from WebPick Internet Holdings to install bundled add-ons including toolbars and other web browser extensions.

Analysis date:
4/27/2024 3:11:46 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.Downloader
7.1.1

Avira AntiVirus
Adware/InstallRex.P.2
7.11.143.56

avast!
Win32:InstalleRex-AI [PUP]
2014.9-140413

AVG
MalSign.Generic
2015.0.3505

Bkav FE
HW32.CDB
1.3.0.4959

Comodo Security
Application.Win32.InstalleRex.LL
18099

Dr.Web
Adware.Downware.1541
9.0.1.0103

ESET NOD32
Win32/InstalleRex
8.9672

Fortinet FortiGate
Riskware/InstalleRex
4/13/2014

G Data
Win32.Application.InstalleRex
14.4.24

IKARUS anti.virus
AdWare.InstallRex
t3scan.1.6.1.0

K7 AntiVirus
Trojan
13.176.11737

Kaspersky
Trojan.Win32.AntiFW
14.0.0.4022

Malwarebytes
PUP.Optional.InstalleRex
v2014.04.13.04

McAfee
PUP-FHQ!8151E1D4CEB2
5600.7161

NANO AntiVirus
Riskware.Win32.Downware.crdwjq
0.28.0.59048

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Reason Heuristics
Adware.WebPick.Installer.I
14.4.13.13

Rising Antivirus
PE:PUF.InstallRex!1.9E4C
23.00.65.14411

Vba32 AntiVirus
Downloader.AdLoad
3.12.26.0

VIPRE Antivirus
Installerex/WebPick
28214

File size:
303.7 KB (310,992 bytes)

Product version:
1.0.0.1

Copyright:
Copyright © 2013 WinterSoft

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
Tarma Installer

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\download.exe

File PE Metadata
Compilation timestamp:
3/12/2013 4:51:45 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:7rkw6Y0JQBkQRl7174NpNUM+UHs+tPvpqvpQAy+L9hMk+W60z4RRWST:7rkw63yRl1uqM+gs+tPvEpPy+rMzuC

Entry address:
0x14DB

Entry point:
55, 8B, EC, 81, EC, 2C, 06, 00, 00, 53, 56, 33, DB, 57, 66, 89, 9D, DC, FB, FF, FF, 89, 5D, F4, 89, 5D, FC, FF, 15, 74, 30, 40, 00, A3, 08, 44, 40, 00, FF, 15, 70, 30, 40, 00, 8B, F8, 8D, 45, EC, 50, FF, 15, 6C, 30, 40, 00, FF, 15, 68, 30, 40, 00, 8B, F0, F7, D6, 33, F7, FF, 15, 64, 30, 40, 00, 33, F0, 8B, 45, F0, 33, 45, EC, 68, 04, 01, 00, 00, 33, F0, 8D, 85, D4, F9, FF, FF, 50, 53, FF, 15, 60, 30, 40, 00, 85, C0, 75, 41, FF, 15, 5C, 30, 40, 00, 83, F8, 78, 75, 1A, 68, A8, 32, 40, 00, E8, 43, FB, FF, FF...
 
[+]

Entropy:
7.9592

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

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

http://lp.vaudix.com/.../Download.exe

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