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tupqsx5s.exe

Ivan Kostin

This is a WebPick installer that bundles (with very minimal user consent) a number of adware browser extensions using the JustPlug.it browser framework. The file tupqsx5s.exe, “Installer for WinterSoft” by Ivan Kostin has been detected as adware by 27 anti-malware scanners. The program is a setup application that uses the WebPick InstalleRex (Tarma) installer. 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  (signed by Ivan Kostin)

Product:
WinterSoft

Description:
Installer for WinterSoft

Version:
2013.10.31.1157

MD5:
e72dfdd2100a436d5503b0019163236a

SHA-1:
367ad60f5663a4bdc3bc4c6053bf1f9b86f6b5af

SHA-256:
7db297412f8c6cb46788b6419620c1b1370d0169a5a5fa5c785f7300809c360d

Scanner detections:
27 / 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:
4/26/2024 7:39:06 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.Downloader
7.1.1

AhnLab V3 Security
PUP/Win32.TSULoader
2014.10.25

Avira AntiVirus
Adware/InstallRex.P.2
7.11.181.10

avast!
Win32:InstalleRex-AI [PUP]
141023-1

AVG
InstallRex.2ef
2015.0.3311

Bkav FE
W32.FamVT.AntiFWK.Trojan
1.3.0.6185

Comodo Security
Application.Win32.InstalleRex.LL
19887

Dr.Web
Adware.Downware.1541
9.0.1.05190

ESET NOD32
Win32/InstalleRex.L potentially unwanted application
7.0.302.0

Fortinet FortiGate
Riskware/InstalleRex
10/24/2014

F-Prot
W32/InstallRex.C.gen
v6.4.7.1.166

G Data
Win32.Application.InstalleRex
14.10.24

K7 AntiVirus
Unwanted-Program
13.185.13789

Kaspersky
Trojan.Win32.AntiFW
15.0.0.494

Malwarebytes
PUP.Optional.InstalleRex
v2014.10.24.04

McAfee
PUP-FHQ
5600.6967

NANO AntiVirus
Riskware.Win32.Downware.crdwjq
0.28.2.62841

nProtect
Trojan/W32.AntiFW.311648
14.10.24.01

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.A5
10.14.14.00

Reason Heuristics
PUP.Installer.IvanKostin.M
14.10.24.15

Rising Antivirus
PE:Malware.Adload!6.B3F
23.00.65.141022

Sophos
InstallRex
4.98

SUPERAntiSpyware
Adware.InstalleRex/Variant
10280

Vba32 AntiVirus
Downware.TSU
3.12.26.3

VIPRE Antivirus
Trojan.Win32.Generic
34214

Zillya! Antivirus
Downloader.Adload.Win32.16843
2.0.0.1966

File size:
304.3 KB (311,648 bytes)

Product version:
1.0.0.1

Copyright:
Copyright © 2013 WinterSoft

Original file name:
TSULoader.exe

Installer:
WebPick InstalleRex (Tarma)

Language:
Turkish (Turkey)

Common path:
C:\users\{user}\appdata\local\temp\tupqsx5s.exe.part

Digital Signature
Signed by:
Ivan Kostin

Authority:
COMODO CA Limited

Valid from:
8/25/2013 3:00:00 AM

Valid to:
8/26/2014 2:59:59 AM

Subject:
CN=Ivan Kostin, O=Ivan Kostin, STREET=Pobedy 33/1, L=Kyiv, S=Kyiv, PostalCode=03170, C=UA

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00EB11D24CE6DDBBF752FE4DC3D683D2BF

File PE Metadata
Compilation timestamp:
3/12/2013 10:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:Srkw6Y0JQBkQRl7174NpNUM+UHs+tPvpqvpQAy+L9hMk+W60z4RRWs:Srkw63yRl1uqM+gs+tPvEpPy+rMzus

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...
 
[+]

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to r1.stylezip.info  (54.186.255.26:80)

TCP (HTTP):
Connects to c1.stylezip.info  (54.186.255.26:80)

 
http://c1.stylezip.info/?step_id=1&installer_id=12436576&publisher_id=243&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=37309728&external_id=0&session_id=74619456&hardware_id=87056032&installer_file_name=tupqsx5s.part

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