download.exe

Lior Sela

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 Lior Sela has been detected as adware by 39 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 Lior Sela)

Product:
StarApp

Description:
Installer for StarApp

Version:
2013.5.4.1122

MD5:
e6d11aeb163fcd87944978e3a06e983a

SHA-1:
bdca19eb0ed867c3c376625eea950ba3abb7a437

SHA-256:
85b0ddf7c1389db57dc3cf6d08fe0b9fad30c887f25e80d1c37323729f00c7ce

Scanner detections:
39 / 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 5:16:03 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Application.Generic.642338
764

Agnitum Outpost
Adware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.TSULoader
2014.06.21

Avira AntiVirus
ADWARE/InstallRex.Gen
7.11.155.242

avast!
Win32:InstalleRex-Q [PUP]
150101-1

AVG
Skodna.Pick
2016.0.3242

Baidu Antivirus
Adware.Win32.Agent
4.0.3.1512

Bitdefender
Application.Generic.642338
1.0.20.10

Bkav FE
HW32.CDB
1.3.0.4959

Clam AntiVirus
Win.Adware.Agent-6646
0.98/19869

Comodo Security
Application.Win32.InstalleRex.KG
18615

Dr.Web
Adware.Downware.1166
9.0.1.05190

Emsisoft Anti-Malware
Trojan.Generic.10433630
8.15.01.02.10

ESET NOD32
Win32/InstalleRex.J potentially unwanted application
7.0.302.0

Fortinet FortiGate
Riskware/InstalleRex
1/2/2015

F-Prot
W32/InstallRex.B
4.6.5.141

F-Secure
Application.Generic.642338
11.2015-02-01_6

G Data
Application.Generic.642338
15.1.24

IKARUS anti.virus
PUP.InstallRex
t3scan.1.6.1.0

K7 AntiVirus
Trojan
13.177.12109

Kaspersky
not-a-virus:AdWare.Win32.Agent
15.0.0.543

Malwarebytes
PUP.Optional.Installex
v2015.01.02.10

McAfee
Program.PUP-FHQ
16.8.708.2

MicroWorld eScan
Application.Generic.642338
16.0.0.6

NANO AntiVirus
Riskware.Win32.Agent.creefe
0.28.0.60253

Norman
Application.Generic.591791
11.20150102

nProtect
Trojan-Clicker/W32.Agent.292640
14.04.24.02

Panda Antivirus
PUP/TSUploader
15.01.02.10

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.B5
1.15.14.00

Reason Heuristics
Adware.WebPick.Installer.I
15.1.2.10

Rising Antivirus
PE:Malware.Agent!6.25
23.00.65.141231

Sophos
PUA 'InstallRex'
5.09

SUPERAntiSpyware
PUP.InstallRex/Variant
10140

Trend Micro House Call
TROJ_GEN.R0CBH07LK13
7.2.2

Trend Micro
TROJ_SPNR.08IA13
10.465.02

Vba32 AntiVirus
Downware.TSU
3.12.26.3

VIPRE Antivirus
Threat.4753027
29708

Zillya! Antivirus
Worm.Luder.Win32.749
2.0.0.1832

File size:
284.8 KB (291,608 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:
1/21/2013 7:00:00 PM

Valid to:
1/22/2014 6:59:59 PM

Subject:
CN=Lior Sela, O=Lior Sela, STREET=Moshe Sharet 46, L=Beer Sheva, S=Beer Sheva, PostalCode=84786, C=IL

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

Serial number:
00D39C56B89258E40E737B2AEDA8D3D3E5

File PE Metadata
Compilation timestamp:
3/12/2013 4:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:Crkec6Y0JQBkQRl7174NpNUM+UHs+UAw0f0AXW5LB/thRQyi:Crkx63yRl1uqM+gs+Bw0f0j9/jSyi

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:
7.9537

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 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=15744164&publisher_id=574&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=47232492&external_id=0&session_id=94464984&hardware_id=110209148&installer_file_name=download

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