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cloud system booster 2.1.0 + key+{totaly free}.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 cloud system booster 2.1.0 + key+{totaly free}.exe, “Installer for TopApp soft” 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:
TopApp soft  (signed by Stas Kosmov)

Product:
TopApp soft

Description:
Installer for TopApp soft

Version:
2014.5.26.2303

MD5:
6c0e571beba10e973f690558f5d68d48

SHA-1:
dcd701e6f63dff526f924bcb8d29f7ce955add0b

SHA-256:
fbb3e016872ae3da305c5e394a094a786e72410ef841adb6f121063819dcb73f

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:
5/7/2024 9:24:01 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Trojan.AntiFW
7.1.1

AhnLab V3 Security
PUP/Win32.TSULoader
14.06.01

Avira AntiVirus
Adware/InstallRex.G
7.11.152.70

avast!
Win32:InstalleRex-BX [PUP]
140531-1

AVG
Generic
2015.0.3457

Comodo Security
Application.Win32.InstalleRex.KG
18393

Dr.Web
Threat.Undefined
9.0.1.05190

ESET NOD32
Win32/InstalleRex.M potentially unwanted application
7.0.302.0

Kaspersky
Trojan.Win32.AntiFW
15.0.0.463

Malwarebytes
PUP.Optional.InstalleRex
v2014.06.01.12

McAfee
PUP-FHQ!6C0E571BEBA1
5600.7113

NANO AntiVirus
Riskware.Win32.InfoLeak.cvgqot
0.28.0.59921

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.A5
6.14.14.00

Reason Heuristics
Adware.WebPick.Installer.m
14.6.12.9

Rising Antivirus
PE:Trojan.AntiFW!6.17F7
23.00.65.14530

Sophos
InstallRex
4.98

Vba32 AntiVirus
Downware.TSU
3.12.26.0

VIPRE Antivirus
Threat.4150696
29800

Zillya! Antivirus
Trojan.AntiFW.Win32.221
2.0.0.1807

File size:
315.1 KB (322,664 bytes)

Product version:
1.0.0.3

Copyright:
Copyright © 2014 TopApp soft

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
WebPick InstalleRex (Tarma)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\cloud system booster 2.1.0 + key+{totaly free}.exe

Digital Signature
Signed by:
Stas Kosmov

Authority:
COMODO CA Limited

Valid from:
9/23/2013 7:00:00 PM

Valid to:
9/24/2014 6:59:59 PM

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 3:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:RrYbUzkuvcBYC47l2xa6g4FhwjZd/9d1XKxlo/ecwrHs5Ig:RrdkuveY36kjZP/XKxlSZAHa

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:
7.9540

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

The file cloud system booster 2.1.0 + key+{totaly free}.exe has been seen being distributed by the following URL.

http://applicationgrabb.net/.../Cloud System Booster 2.1.0 Key {Totaly free}.exe

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=6022088&publisher_id=022&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=18066264&external_id=0&session_id=36132528&hardware_id=42154616&installer_file_name=cloud+system+booster+2.1.0+++key+{totaly+free}

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