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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:
2013.6.19.1256

MD5:
7c9f225eae6c2331dd856e8138744150

SHA-1:
c57b78fd89f44346855179335d8e96d79584d00e

SHA-256:
561610812c46a0dcfef3ce5768e8cd106166d5314a01c6e666022c40145327cf

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:
4/19/2024 9:33:45 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Application.Bundler.InstallRex.2
409

Agnitum Outpost
Adware.Generic
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]
2014.9-151222

AVG
Skodna.Pick
2016.0.2887

Baidu Antivirus
Adware.Win32.Agent
4.0.3.151222

Bitdefender
Application.Generic.642338
1.0.20.1780

Bkav FE
HW32.CDB
1.3.0.4959

Clam AntiVirus
Win.Adware.Agent-6646
0.98/20225

Comodo Security
Application.Win32.InstalleRex.KG
17982

Dr.Web
Adware.Downware.1166
9.0.1.0356

Emsisoft Anti-Malware
Gen:Variant.Application.Bundler.InstallRex
8.15.12.22.12

ESET NOD32
Win32/InstalleRex.J potentially unwanted application
9.7.0.302.0

Fortinet FortiGate
Riskware/InstalleRex
12/22/2015

F-Prot
W32/InstallRex.B
v6.4.6.5.141

F-Secure
Riskware.Gen:Variant.Application.Bundler
11.2015-22-12_3

G Data
Application.Generic.642338
15.12.24

IKARUS anti.virus
PUP.InstallRex
t3scan.1.6.1.0

K7 AntiVirus
Trojan
13.177.12109

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.932

Malwarebytes
PUP.Optional.Installex
v2015.12.22.12

McAfee
PUP-FHQ!13921D944D6B
5600.6543

MicroWorld eScan
Application.Generic.642338
16.0.0.1068

NANO AntiVirus
Riskware.Win32.Adware.crcapm
0.28.0.58491

Norman
Application.Generic.591791
11.20151222

nProtect
Trojan-Clicker/W32.Agent.292640
14.04.24.02

Panda Antivirus
PUP/TSUploader
15.12.22.12

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.B5
12.15.14.00

Reason Heuristics
Adware.WebPick.Installer (M)
15.12.22.12

Rising Antivirus
PE:Malware.Agent!6.25
23.00.65.151220

Sophos
InstallRex
4.98

SUPERAntiSpyware
PUP.InstallRex/Variant
9432

Trend Micro House Call
TROJ_GEN.R0CBH07LK13
7.2.356

Trend Micro
TROJ_SPNR.08IA13
10.465.22

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:
286.3 KB (293,152 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:
Lior Sela

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:Urkq6Y0JQBkQRl7174NpNUM+UHs+FAk6dU+h1xSx684Ys05d7PHy:Urkq63yRl1uqM+gs+mkuUEaYb4dLy

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:
7.9549

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://superfilesdatay.asia/v684?tWV

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=39882628&publisher_id=988&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=119647884&external_id=0&session_id=239295768&hardware_id=279178396&installer_file_name=download

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