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downloadsetup.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 downloadsetup.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:
2013.7.4.1638

MD5:
f6c685fba6e47bff2c8769ce563172fb

SHA-1:
49de61d6a065b98a3c4eaf0ccc05f3ca61ae8a15

SHA-256:
58f426e4d3908b76210365b88bea86633231cbe1ccf550054cfb5b1287bc0d67

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:
4/19/2024 12:04:15 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.Generic.570790
682

Agnitum Outpost
Adware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.TSULoader
15.03.24

Avira AntiVirus
ADWARE/InstallRex.Gen
7.11.143.80

avast!
Win32:InstalleRex-X [PUP]
2014.9-150324

AVG
AdInstaller.P
2016.0.3160

Bitdefender
Adware.Generic.571854
1.0.20.415

Bkav FE
HW32.CDB
1.3.0.4959

Clam AntiVirus
Win.Adware.560923
0.98/19185

Comodo Security
Application.Win32.InstalleRex.KG
18102

Dr.Web
Adware.Downware.1166
9.0.1.083

Emsisoft Anti-Malware
Adware.Generic.570790
8.15.03.24.04

ESET NOD32
Win32/InstalleRex.J potentially unwanted application
9.7.0.302.0

Fortinet FortiGate
Riskware/InstalleRex
3/24/2015

F-Prot
W32/InstallRex.B
v6.4.6.5.141

F-Secure
Adware.Generic.570790
11.2015-24-03_3

G Data
Adware.Generic.570790
15.3.24

herdProtect (fuzzy)
variant of vaudix.exe (Adware)
2015.6.29.15

IKARUS anti.virus
PUP.InstallRex
t3scan.1.6.1.0

K7 AntiVirus
Unwanted-Program
13.177.12109

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.2297

Malwarebytes
PUP.Optional.Installex
v2015.03.24.04

McAfee
PUP-FHQ!C5D41C4A0F1F
5600.6816

MicroWorld eScan
Adware.Generic.571854
16.0.0.249

NANO AntiVirus
Riskware.Win32.Agent.crfila
0.28.0.59048

Norman
Adware.Generic.575728
11.20150324

nProtect
Trojan.Generic.9472436
14.04.22.01

Panda Antivirus
PUP/TSUploader
15.03.24.04

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.B5
3.15.14.00

Reason Heuristics
Adware.WebPick.Installer
15.3.24.16

Rising Antivirus
PE:PUF.InstallRex!1.9E4C
23.00.65.15322

Sophos
InstallRex
4.98

SUPERAntiSpyware
Adware.InstalleRex/Variant
9978

Vba32 AntiVirus
Downloader.AdLoad
3.12.26.0

VIPRE Antivirus
Installerex/WebPick
28214

Zillya! Antivirus
Dropper.Injector.Win32.56002
2.0.0.1792

File size:
292.3 KB (299,288 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)

Common path:
C:\users\{user}\downloads\downloadsetup.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:Nrk/9uEo2S1YnQmCX492DkwNP3qpYFYjwrShcFvViiyeVMPNuyloTaTuEGZ:Nrk1u6/eIo4+mhcF9iiyaMPNFlo53Z

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

http://applicationsforeveryy.asia/v1011?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&subid=818003323

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=19419404&publisher_id=941&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=58258212&external_id=0&session_id=116516424&hardware_id=135935828&installer_file_name=downloadsetup

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