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download.exe

Yakov Cohen

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 StarApp” by Yakov Cohen has been detected as adware by 37 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:
StarApp  (signed by Yakov Cohen)

Product:
StarApp

Description:
Installer for StarApp

Version:
2013.7.23.2048

MD5:
1697c2c667cb341e29f487bcb481c183

SHA-1:
27abe15f2afc3048f4bb29cd7c5dcb36f52e89e2

SHA-256:
8f9067c7d7b5fcc3db1ba1993a4b9b3a86b380dd45f34c9ccafc5468957f07cf

Scanner detections:
37 / 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 6:50:24 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Application.Bundler.InstallRex.2
355

Agnitum Outpost
Adware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.TSULoader
16.02.15

Avira AntiVirus
TR/MSIL.Agent.cfgz
7.11.150.214

avast!
Win32:InstalleRex-X [PUP]
2014.9-160215

AVG
Adware Generic5
2017.0.2833

Baidu Antivirus
Adware.Win32.Agent
4.0.3.16215

Bitdefender
Trojan.Generic.9471100
1.0.20.230

Bkav FE
HW32.CDB
1.3.0.4959

Clam AntiVirus
Win.Adware.560923
0.98/20392

Comodo Security
Application.Win32.InstalleRex.KG
18306

Dr.Web
Adware.Downware.1166
9.0.1.046

Emsisoft Anti-Malware
Gen:Variant.Application.Bundler.InstallRex
8.16.02.15.01

ESET NOD32
Win32/InstalleRex.J potentially unwanted application
10.7.0.302.0

Fortinet FortiGate
Riskware/InstalleRex
2/15/2016

F-Prot
W32/InstallRex.B
v6.4.6.5.141

F-Secure
Riskware.Gen:Variant.Application.Bundler
11.2016-15-02_2

G Data
Trojan.Generic.9471100
16.2.24

IKARUS anti.virus
PUP.InstallRex
t3scan.1.6.1.0

K7 AntiVirus
Unwanted-Program
13.178.12155

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.660

Malwarebytes
PUP.Optional.Installex
v2016.02.15.01

McAfee
PUP-FHQ
5600.6489

MicroWorld eScan
Adware.Generic.572921
17.0.0.138

NANO AntiVirus
Riskware.Win32.Agent.crfdab
0.28.0.59921

Norman
Adware.Generic.561651
11.20160215

nProtect
Trojan-Clicker/W32.Agent.300096
14.08.07.01

Panda Antivirus
PUP/TSUploader
16.02.15.01

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.B5
2.16.14.00

Reason Heuristics
Adware.WebPick.Installer (M)
16.2.15.1

Rising Antivirus
PE:Trojan.Agent!6.38D
23.00.65.16213

Sophos
PUA 'InstallRex'
5.13

SUPERAntiSpyware
Adware.InstalleRex/Variant
9323

Vba32 AntiVirus
Downloader.AdLoad
3.12.26.0

VIPRE Antivirus
Threat.4150696
29708

Zillya! Antivirus
Adware.Agent.Win32.8403
2.0.0.1796

File size:
293.8 KB (300,832 bytes)

Product version:
1.0.0.1

Copyright:
Copyright © 2012 StarApp

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:
Yakov Cohen

Authority:
COMODO CA Limited

Valid from:
8/2/2012 2:00:00 AM

Valid to:
8/3/2013 1:59:59 AM

Subject:
CN=Yakov Cohen, O=Yakov Cohen, STREET=Rodenski 10, L=Tel Aviv, S=Israel, PostalCode=69360, C=IL

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

Serial number:
009AF809F48BC879375BE578151D15C51C

File PE Metadata
Compilation timestamp:
3/12/2013 9:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:Irk29uEo2S1YnQmCX492DkwNP3qpYFruKBCkW1vN8d5kGZUB1mGmafKgsJkwgBgf:IrkOu6/eIo4e1ivEKnmGmCBsJkq

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=69283374&publisher_id=928&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=207850122&external_id=0&session_id=415700244&hardware_id=484983618&installer_file_name=download

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