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download.exe

Alexey Kurilenko

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 download.exe, “Installer for EZSoftware” by Alexey Kurilenko 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:
EZSoftware  (signed by Alexey Kurilenko)

Product:
EZSoftware

Description:
Installer for EZSoftware

Version:
2014.7.23.2001

MD5:
108140c6204fc1c58712aeae24eb59bc

SHA-1:
45166ea5d4ebbc44f5ad138fbb5776c2091aca0c

SHA-256:
82ffca6bf495b6f5c44bcf84b3f245f3b7d361f9f4054a611aa582929554e0ce

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:
1/12/2025 7:04:23 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Trojan.AntiFW
7.1.1

AhnLab V3 Security
PUP/Win32.TSULoader
2014.12.23

Avira AntiVirus
Adware/InstallRex.Z
7.11.197.44

avast!
Win32:InstalleRex-CH [PUP]
141214-1

AVG
Generic
2015.0.3252

Bkav FE
W32.FamVT.AntiFWK.Trojan
1.3.0.6267

Comodo Security
Application.Win32.InstalleRex.KG
20441

Dr.Web
Trojan.WebPick.2735
9.0.1.05190

ESET NOD32
Win32/InstalleRex.M potentially unwanted application
7.0.302.0

Fortinet FortiGate
Riskware/Generic.AC.4161048
12/23/2014

F-Prot
W32/InstallRex.B
4.6.5.141

G Data
Win32.Application.InstalleRex
14.12.24

K7 AntiVirus
Unwanted-Program
13.188.14410

Kaspersky
Trojan.Win32.AntiFW
15.0.0.543

Malwarebytes
PUP.Optional.Installrex
v2014.12.23.12

McAfee
Program.PUP-FMK
16.8.708.2

NANO AntiVirus
Riskware.Win32.InfoLeak.cvgqot
0.28.6.64267

nProtect
Trojan/W32.AntiFW.321736
14.12.22.01

Panda Antivirus
PUP/TSUploader
14.12.23.12

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.A5
12.14.14.00

Reason Heuristics
Adware.WebPick.Installer.I
14.12.22.23

Rising Antivirus
PE:Trojan.DL.Win32.AntiFW.a!1075355932
23.00.65.141221

Sophos
PUA 'InstallRex'
5.09

Vba32 AntiVirus
Downware.TSU
3.12.26.3

VIPRE Antivirus
Threat.4150696
35418

Zillya! Antivirus
Trojan.AntiFW.Win32.477
2.0.0.2013

File size:
314.2 KB (321,736 bytes)

Product version:
1.0.0.3

Copyright:
Copyright © 2014 EZSoftware

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
WebPick InstalleRex (Tarma)

Language:
Language Neutral

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

Digital Signature
Signed by:
Alexey Kurilenko

Authority:
Unizeto Technologies S.A.

Valid from:
6/17/2014 8:20:17 AM

Valid to:
6/17/2015 8:20:17 AM

Subject:
E=Alexey.kurilenko@hotmail.com, CN=Alexey Kurilenko, O=Alexey Kurilenko, C=RU

Issuer:
CN=Certum Code Signing CA, OU=Certum Certification Authority, O=Unizeto Technologies S.A., C=PL

Serial number:
15D51642691B3EE20985639A8FE865DD

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:erfbUzkuvcBYC47l2xMrJO/KNYtlENexAYl47LtOBxLTKgQ:erUkuveY3FVHNYt72gdQ

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:
7.9522

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://newroyalshopperapp.info/v3574/lp/?q=gxg8/qq35eKNVrpnikdsJMqI7BBW/G15HukbgXRXw2XEaSUvO8Cj/e1vVOC8Z4Y7zT7daWFHdKbsZb GGWJEitzSK0m/.../XhMgEIPCJt2tCajR&external_id=1406785985102802608

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=15367748&publisher_id=536&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=46103244&external_id=0&session_id=92206488&hardware_id=107574236&installer_file_name=download

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