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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 38 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:
6586a4c59b4e713e1285044131a8b717

SHA-1:
ff81a6ff6ad40d1262f5032a31bd022c1c276e89

SHA-256:
0a158d1f7da558cb395c098f2993d3afaa2d28a46e9151ba14de56486cbbf0ec

Scanner detections:
38 / 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 7:41:13 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Application.Bundler.InstallRex.2
5970718

Agnitum Outpost
Adware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.TSULoader
15.05.10

Avira AntiVirus
TR/MSIL.Agent.cfgz
7.11.150.214

avast!
Win32:InstalleRex-X [PUP]
2014.9-150510

AVG
Adware Generic5
2016.0.3113

Baidu Antivirus
Adware.Win32.Agent
4.0.3.15510

Bitdefender
Trojan.Generic.9471100
1.0.20.650

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
9.0.1.0130

Emsisoft Anti-Malware
Gen:Variant.Application.Bundler.InstallRex
9.0.0.4799

ESET NOD32
Win32/InstalleRex.J potentially unwanted application
9.7.0.302.0

Fortinet FortiGate
Riskware/InstalleRex
5/10/2015

F-Prot
W32/InstallRex.B
4.6.5.141

F-Secure
Riskware.Gen:Variant.Application.Bundler
5.13.68

G Data
Trojan.Generic.9471100
15.5.24

herdProtect (fuzzy)
variant of zoomplayer.exe (Adware)
2015.8.8.3

IKARUS anti.virus
PUP.InstallRex
t3scan.1.6.1.0

K7 AntiVirus
Unwanted-Program
13.178.12155

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.2061

Malwarebytes
PUP.Optional.Installex
v2015.05.10.07

McAfee
PUP-FHQ
5600.6769

MicroWorld eScan
Adware.Generic.572921
16.0.0.390

NANO AntiVirus
Riskware.Win32.Agent.crfdab
0.28.0.59921

Norman
Adware.Generic.561651
03.12.2014 13:20:04

nProtect
Trojan-Clicker/W32.Agent.300096
14.08.07.01

Panda Antivirus
PUP/TSUploader
15.05.10.07

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.B5
5.15.14.00

Reason Heuristics
Adware.WebPick.Installer
15.5.10.15

Rising Antivirus
PE:Trojan.Agent!6.38D
23.00.65.15508

Sophos
PUA 'InstallRex'
5.14

SUPERAntiSpyware
Adware.InstalleRex/Variant
9883

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 1:00:00 AM

Valid to:
8/3/2013 12:59:59 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 8:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:Irk29uEo2S1YnQmCX492DkwNP3qpYFruKBCkW1vN8d5kGZUB1mGmafKgsJkwgBgx:IrkOu6/eIo4e1ivEKnmGmCBsJkE

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:
7.9542

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://applicationsforeveryy.asia/v684?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

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=21347314&publisher_id=134&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=64041942&external_id=0&session_id=128083884&hardware_id=149431198&installer_file_name=download

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