download.exe

Sergey Petrov

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 HostIt” by Sergey Petrov has been detected as adware by 29 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.
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Publisher:
HostIt  (signed by Sergey Petrov)

Product:
HostIt

Description:
Installer for HostIt

Version:
2014.3.6.1511

MD5:
63ad32dfd2e01cf7094efebb4d295876

SHA-1:
6920608fb5740e4a5be47b2d1f3939b7db6de5fc

SHA-256:
0cc5432bfe4b35f71d87dccf043a41a665d7579105400c6c6ebff1f2d7cd390c

Scanner detections:
29 / 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:
12/3/2016 12:55:13 PM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
PUP/Win32.TSULoader
2014.06.11

Avira AntiVirus
TR/Kazy.324119.2
7.11.154.60

Antiy Labs AVL
Trojan/Win32.AntiFW.b
1.0.0.1

avast!
Win32:InstalleRex-BI [PUP]
140608-0

AVG
Trojan horse Crypt_s.GAB
2014.0.3955

Comodo Security
Application.Win32.InstalleRex.KG
18503

Dr.Web
Trojan.WebPick.29
9.0.1.05190

ESET NOD32
Win32/InstalleRex.P potentially unwanted application
7.0.302.0

F-Prot
W32/InstallRex.A
4.6.5.141

G Data
Win32.Application.EZDownloader
14.6.24

IKARUS anti.virus
PUP.InstallRex
t3scan.1.6.1.0

K7 AntiVirus
Unwanted-Program
13.1712358

K7 Gateway Antivirus
Unwanted-Program
13.1712358

Kaspersky
Trojan.Win32.AntiFW
15.0.0.463

Kingsoft AntiVirus
Win32.Troj.AntiFW.b.(kcloud)
331020.49267

Malwarebytes
PUP.Optional.Installex
v2014.06.10.04

McAfee
PUP-FHQ!63AD32DFD2E0
5600.7103

McAfee Web Gateway
PUP-FHQ!63AD32DFD2E0
7.7103

NANO AntiVirus
Riskware.Win32.Downware.cukhlv
0.28.0.60253

nProtect
Trojan/W32.AntiFW.322152
14.06.10.01

Panda Antivirus
PUP/TSUploader
14.06.10.04

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.A5
6.14.14.00

Reason Heuristics
Adware.WebPick.Installer.I
14.6.10.15

Rising Antivirus
PE:Trojan.AntiFW!6.15B9
23.00.65.14608

Sophos
InstallRex
4.98

Vba32 AntiVirus
Downware.TSU
3.12.26.0

VIPRE Antivirus
Threat.4150696
30086

Remove download.exe - Powered by Reason Core Security
File size:
314.6 KB (322,152 bytes)

Product version:
1.0.0.3

Copyright:
Copyright © 2014 HostIt

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:
8/21/2013 3:30:00 AM

Valid to:
8/22/2014 3:29:59 AM

Subject:
CN=Sergey Petrov, O=Sergey Petrov, STREET=Gaydara 13, L=Kyev, S=Kyev, PostalCode=01033, C=UA

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

Serial number:
0AD084E865D27CD546D21DB6EDF89D48

File PE Metadata
Compilation timestamp:
3/12/2013 12:21:45 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:vribUzkuvcBYC47l2xdtqsnixBzO7F3PfLwXZoBxBY27vI6wIkhC900mQ:vr7kuveY3yUFbO+Sb5wIGYF

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:
7.9542

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=6400314&publisher_id=400&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=19200942&external_id=0&session_id=38401884&hardware_id=44802198&installer_file_name=download

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