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download.exe

Stas Kosmov

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 BrilliantInstaller” by Stas Kosmov has been detected as adware by 20 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:
BrilliantInstaller  (signed by Stas Kosmov)

Product:
BrilliantInstaller

Description:
Installer for BrilliantInstaller

Version:
2014.6.4.1630

MD5:
be65af4125e1bea24c2c9dd267d3c9e6

SHA-1:
9a3dad520624ec58a8f1c12222d8dbab532ae236

SHA-256:
8b5a83433e27e429e021d3204c8d8a9a19d74c6d14fec1d0f32bc6fd9adfc76a

Scanner detections:
20 / 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:
4/17/2024 11:57:52 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

Agnitum Outpost
Trojan.AntiFW
7.1.1

Avira AntiVirus
TR/AntiFW.b.114
7.11.154.144

avast!
Win32:InstalleRex-BX [PUP]
2014.9-160214

AVG
Generic
2017.0.2834

Comodo Security
Application.Win32.InstalleRex.KG
18521

Dr.Web
Threat.Undefined
9.0.1.045

ESET NOD32
Win32/InstalleRex.M potentially unwanted application
10.7.0.302.0

IKARUS anti.virus
PUA.Kosmov
t3scan.1.6.1.0

Kaspersky
Trojan.Win32.AntiFW
14.0.0.664

Malwarebytes
PUP.Optional.InstalleRex
v2016.02.14.05

McAfee
PUP-FHQ!3B92E4719053
5600.6490

NANO AntiVirus
Riskware.Win32.InfoLeak.cvgqot
0.28.0.60253

Panda Antivirus
PUP/TSUploader
16.02.14.05

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.A5
2.16.14.00

Reason Heuristics
Adware.WebPick.Installer (M)
16.2.14.5

Sophos
InstallRex
4.98

Vba32 AntiVirus
Downware.TSU
3.12.26.0

VIPRE Antivirus
Threat.4150696
29708

Zillya! Antivirus
Trojan.AntiFW.Win32.253
2.0.0.1821

File size:
315.1 KB (322,624 bytes)

Product version:
1.0.0.3

Copyright:
Copyright © 2014 BrilliantInstaller

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:
Stas Kosmov

Authority:
COMODO CA Limited

Valid from:
9/24/2013 1:00:00 AM

Valid to:
9/25/2014 12:59:59 AM

Subject:
CN=Stas Kosmov, O=Stas Kosmov, STREET=Levitana 21, L=Kiev, S=Kiev, PostalCode=03083, C=UA

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

Serial number:
7A2834207C5588F506D3CF09661E12F2

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):
6144:6r2bUzkuvcBYC47l2xib6HwzFyytCr88oDG1GI25i1snqq0EVY:6r/kuveY3dGwUECr88oDG1GIS+bq0qY

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:
7.9527

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

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=68490268&publisher_id=849&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=205470804&external_id=0&session_id=410941608&hardware_id=479431876&installer_file_name=download

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