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TSULoader.exe

Sergey Petrov

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 application TSULoader.exe, “Installer for MyApps” by Sergey Petrov has been detected as adware by 18 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:
MyApps  (signed by Sergey Petrov)

Product:
MyApps

Description:
Installer for MyApps

Version:
2014.4.24.1440

MD5:
901187d181e17b68cdde4e321ff8922d

SHA-1:
a0f3cf4b8704447e575abff3aec1e8ed086867a0

SHA-256:
8ef29eb36eabb3a2d537acef3371f3e0db3d458f2d77e91112897ba38e278525

Scanner detections:
18 / 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:
4/16/2024 6:50:34 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Trojan.AntiFW
7.1.1

Avira AntiVirus
Adware/InstallRex.A.2
7.11.145.108

avast!
Win32:Installer-AP [PUP]
2014.9-140427

AVG
MalSign.Generic
2015.0.3491

Comodo Security
Application.Win32.InstalleRex.KG
18173

Dr.Web
Trojan.WebPick.29
9.0.1.0117

ESET NOD32
Win32/InstalleRex (variant)
8.9728

G Data
Win32.Application.EZDownloader
14.4.24

K7 AntiVirus
Unwanted-Program
13.176.11896

Kaspersky
Trojan.Win32.AntiFW
14.0.0.3952

Malwarebytes
PUP.Optional.InstalleRex
v2014.04.27.12

NANO AntiVirus
Riskware.Win32.InfoLeak.cvgqot
0.28.0.59492

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Reason Heuristics
Adware.WebPick.Installer.J
14.4.27.12

Rising Antivirus
PE:PUF.InstallRex!1.9E4C
23.00.65.14425

Sophos
InstallRex
4.98

Vba32 AntiVirus
Downloader.AdLoad
3.12.26.0

VIPRE Antivirus
Installerex/WebPick
28622

File size:
316.1 KB (323,648 bytes)

Product version:
1.0.0.3

Copyright:
Copyright © 2014 MyApps

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
WebPick InstalleRex (Tarma)

Language:
Language Neutral

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

Digital Signature
Signed by:
Sergey Petrov

Authority:
COMODO CA Limited

Valid from:
8/20/2013 8:00:00 PM

Valid to:
8/21/2014 7:59:59 PM

Subject:
CN=Sergey Petrov, O=Sergey Petrov, STREET=Gaydara 13, L=Kyev, S=Kyev, PostalCode=01033, C=UA

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

Serial number:
0AD084E865D27CD546D21DB6EDF89D48

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

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:hrvbUzkuvcBYC47l2xmDZH4xBsprVIvThDm9FdAZ+x99wVB:hrkkuveY3zhlV6tmDxzwVB

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:
7.9537

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

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

http://toolkitfreefast.com/v578

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=4401770&publisher_id=401&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=13205310&external_id=0&session_id=26410620&hardware_id=30812390&installer_file_name=TSULoader

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