download.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 download.exe, “Installer for StarApp” by Yakov Cohen has been detected as adware by 33 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:
2013.7.31.1745

MD5:
98f0880a60fc8fffa248bd40ae3bb489

SHA-1:
5cc295d64ae7d85ca0089d99c91d7abd56bcbeaf

SHA-256:
2cb1c948b1a2066bf066e69343ec8e603ff4129871d94a46455455271c56ae04

Scanner detections:
33 / 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 10:15:43 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.Generic.570707
1017

Agnitum Outpost
Adware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.TSULoader
14.04.24

Avira AntiVirus
Adware/Agent.aeph.2
7.11.145.12

avast!
Win32:InstalleRex-X [PUP]
2014.9-140424

Bitdefender
Adware.Generic.570707
1.0.20.570

Bkav FE
HW32.CDB
1.3.0.4959

Clam AntiVirus
Win.Adware.560923
0.98/19073

Comodo Security
Application.Win32.InstalleRex.KG
18158

Dr.Web
Adware.Downware.1166
9.0.1.0114

Emsisoft Anti-Malware
Adware.Generic.570707
8.14.04.24.05

ESET NOD32
Win32/InstalleRex
8.9714

Fortinet FortiGate
Riskware/InstalleRex
4/24/2014

F-Secure
Adware.Generic.570707
11.2014-24-04_5

G Data
Adware.Generic.570707
14.4.24

IKARUS anti.virus
PUP.InstallRex
t3scan.1.6.1.0

K7 AntiVirus
Unwanted-Program
13.176.11861

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.3969

Malwarebytes
PUP.Optional.Installex
v2014.04.24.05

McAfee
PUP-FHQ!98F0880A60FC
5600.7151

MicroWorld eScan
Adware.Generic.570707
15.0.0.342

NANO AntiVirus
Riskware.Win32.Agent.crfilp
0.28.0.59492

nProtect
Trojan-Clicker/W32.Agent.308096
14.05.21.01

Panda Antivirus
PUP/TSUploader
14.04.24.05

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.B5
8.14.14.00

Reason Heuristics
Adware.WebPick.Installer.I
14.8.7.18

Rising Antivirus
PE:PUF.InstallRex!1.9E4C
23.00.65.14422

Sophos
InstallRex
4.98

SUPERAntiSpyware
PUP.InstallRex/Variant
10647

Vba32 AntiVirus
Downloader.AdLoad
3.12.26.0

VIPRE Antivirus
Installerex/WebPick
28562

Zillya! Antivirus
Adware.Agent.Win32.8403
2.0.0.1796

File size:
293.1 KB (300,128 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:

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:erks6Y0JQBkQRl7174NpNUM+UHs+ewmb3I1WVIOnfXsnf/AU:erks63yRl1uqM+gs+dmrIEVBfXY/3

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:
7.9570

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.

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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