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download.exe

Eran Vaterfeld

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 Eran Vaterfeld has been detected as adware by 36 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 Eran Vaterfeld)

Product:
StarApp

Description:
Installer for StarApp

Version:
2013.8.21.1505

MD5:
ba4ce1b17ea858bb4dee0b0e4bb47fe1

SHA-1:
e1f1ac18c116620e93615c9558be46cd78da5dc7

Scanner detections:
36 / 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:
4/24/2024 1:08:09 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Application.Bundler.InstallRex.2
354

Agnitum Outpost
Adware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.TSULoader
16.02.15

Avira AntiVirus
ADWARE/InstallRex.Gen
7.11.143.202

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

AVG
MalSign.Skodna
2017.0.2832

Bitdefender
Application.Generic.908757
1.0.20.230

Bkav FE
W32.FamVT.AntiFWK.Trojan
1.3.0.4959

Clam AntiVirus
Win.Adware.Agent-6822
0.98/19942

Comodo Security
Application.Win32.Agent.W
18114

Dr.Web
Adware.Downware.1166
9.0.1.046

Emsisoft Anti-Malware
Gen:Variant.Application.Bundler.InstallRex
8.16.02.15.06

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
Win32.Application.InstalleRex
16.2.24

IKARUS anti.virus
PUP.InstallRex
t3scan.1.6.1.0

K7 AntiVirus
Trojan
13.176.11777

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.656

Malwarebytes
PUP.Optional.Installex
v2016.02.15.06

McAfee
Program.PUP-FHQ
5600.6488

MicroWorld eScan
Application.Generic.908757
17.0.0.138

NANO AntiVirus
Riskware.Win32.Agent.crfiyn
0.28.0.59288

Norman
Gen:Variant.Application.Bundler.InstallRex.2
11.20160215

nProtect
Trojan-Clicker/W32.Agent.301208
15.05.29.01

Panda Antivirus
PUP/TSUploader
16.02.15.06

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)
16.2.15.18

Rising Antivirus
PE:PUF.InstallRex!1.9E4C
23.00.65.16213

Sophos
PUA 'InstallRex'
5.14

SUPERAntiSpyware
PUP.InstallRex/Variant
9321

Vba32 AntiVirus
Downloader.AdLoad
3.12.26.0

VIPRE Antivirus
Installerex/WebPick
28282

Zillya! Antivirus
Adware.Agent.Win32.8531
2.0.0.1845

File size:
294.1 KB (301,136 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:\Documents and Settings\{user}\My documents\downloads\download.exe

Digital Signature
Signed by:
Eran Vaterfeld

Authority:
COMODO CA Limited

Valid from:
7/10/2013 1:00:00 AM

Valid to:
7/11/2014 12:59:59 AM

Subject:
CN=Eran Vaterfeld, O=Eran Vaterfeld, STREET=Shtruk 15, L=Tel Aviv, S=Tel Aviv, PostalCode=64042, C=IL

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

Serial number:
00CF0201F072612C73F4F11FE23420B802

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:xrk56Y0JQBkQRl7174NpNUM+UHs+fgkrGtAh81chopFWQxVp1T4ZucKpn:xrk563yRl1uqM+gs+wAhgqo3WQxqZNKh

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:
7.9578

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://lp.vaudix.com/.../Download.exe

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=70006804&publisher_id=000&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=210020412&external_id=0&session_id=420040824&hardware_id=490047628&installer_file_name=download

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