downloadsetup.exe

Yakov Cohen

This is a WebPick installer that bundles (with very minimal user consent) a number of adware browser extensions which inject ads in the browser. The application downloadsetup.exe, “Installer for StarApp” by Yakov Cohen has been detected as adware by 41 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:
35c8634851174529ad11b3a40362945a

SHA-1:
edfdef7397a10b2d6ee3e5e7cbd484cdc3af6d65

SHA-256:
20b240487cddc717431befb81a80899142eaa605d6e19c8ef7b3eb0e1961c1f5

Scanner detections:
41 / 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 11:10:13 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Application.Bundler.InstallRex.2
545

Agnitum Outpost
Adware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.TSULoader
15.08.08

Avira AntiVirus
ADWARE/InstallRex.Gen
7.11.143.80

Arcabit
Trojan.Application.Bundler.InstallRex.2
1.0.0.425

avast!
Win32:InstalleRex-X [PUP]
2014.9-150808

AVG
AdInstaller.P
2016.0.3023

Baidu Antivirus
Adware.Win32.InstalleRex
4.0.3.1588

Bitdefender
Adware.Generic.570790
1.0.20.1100

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
9.0.1.0220

Emsisoft Anti-Malware
Gen:Variant.Application.Bundler.InstallRex
8.15.08.08.08

ESET NOD32
Win32/InstalleRex.J potentially unwanted application
9.7.0.302.0

Fortinet FortiGate
Riskware/InstalleRex
8/8/2015

F-Prot
W32/InstallRex.B
v6.4.6.5.141

F-Secure
Riskware.Gen:Variant.Application.Bundler
11.2015-08-08_7

G Data
Adware.Generic.570790
15.8.24

herdProtect (fuzzy)
2015.9.17.5

IKARUS anti.virus
PUP.InstallRex
t3scan.1.6.1.0

K7 AntiVirus
Trojan
13.176.11737

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.1611

Malwarebytes
PUP.Optional.Installex
v2015.08.08.08

McAfee
Program.PUP-FHQ
5600.6679

MicroWorld eScan
Adware.Generic.570790
16.0.0.660

NANO AntiVirus
Riskware.Win32.Agent.crfila
0.28.0.59048

Norman
Adware.Generic.570790
11.20150808

nProtect
Trojan.Generic.9472436
14.04.22.01

Panda Antivirus
PUP/TSUploader
15.08.08.08

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.B5
8.15.14.00

Reason Heuristics
Adware.WebPick.Installer (M)
15.8.8.20

Rising Antivirus
PE:PUF.InstallRex!1.9E4C
23.00.65.15806

Sophos
PUA 'InstallRex'
5.12

SUPERAntiSpyware
PUP.InstallRex/Variant
9703

Trend Micro House Call
TROJ_GEN.R08NC0FCQ15
7.2.220

Trend Micro
TROJ_GEN.R08NC0FCQ15
10.465.08

Vba32 AntiVirus
Downloader.AdLoad
3.12.26.0

VIPRE Antivirus
Threat.14871
38882

Zillya! Antivirus
Dropper.Injector.Win32.56002
2.0.0.1783

File size:
293.8 KB (300,808 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\downloadsetup.exe

Digital Signature
Signed by:

Authority:
COMODO CA Limited

Valid from:
8/1/2012 9:00:00 PM

Valid to:
8/2/2013 8:59:59 PM

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 5:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:Qrk29uEo2S1YnQmCX492DkwNP3qpYFruKBCkW1vN8d5kGZUB1mGmafKgsJkwgBg3:QrkOu6/eIo4e1ivEKnmGmCBsJkW

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.

The executing file has been seen to make the following network communication in live environments.

TCP (HTTP):
Connects to r1.stylezip.info  (54.186.255.26:80)

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