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windows 8.1 activator.exe

Stas Kosmov

This is a WebPick installer that bundles (with very minimal user consent) a number of adware browser extensions which inject ads in the browser. The application windows 8.1 activator.exe, “Installer for TopApp soft” by Stas Kosmov has been detected as adware by 24 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:
fc4b6b062551e834b8996d4c2697b271

SHA-1:
aa3e36d93f74d572c856f164f473ad3cbd8215e9

SHA-256:
25a730c8bfb8618a692ae7729097374b2c1148f23224877a8025d41179a09f91

Scanner detections:
24 / 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:
4/23/2024 3:38:42 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Trojan.AntiFW
7.1.1

AhnLab V3 Security
PUP/Win32.TSULoader
2014.06.13

Avira AntiVirus
Adware/InstallRex.G
7.11.154.162

avast!
Win32:InstalleRex-BX [PUP]
140611-0

AVG
Generic
2015.0.3445

Comodo Security
Application.Win32.InstalleRex.KG
18527

Dr.Web
Threat.Undefined
9.0.1.05190

ESET NOD32
Win32/InstalleRex.M potentially unwanted application
7.0.302.0

G Data
Win32.Application.InstalleRex
14.6.24

IKARUS anti.virus
PUA.Kosmov
t3scan.1.6.1.0

K7 AntiVirus
Unwanted-Program
13.1712387

Kaspersky
Trojan.Win32.AntiFW
15.0.0.463

Malwarebytes
PUP.Optional.InstalleRex
v2014.06.12.07

McAfee
PUP-FHQ!FC4B6B062551
5600.7101

NANO AntiVirus
Riskware.Win32.InfoLeak.cvgqot
0.28.0.60253

Panda Antivirus
PUP/TSUploader
14.06.12.07

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.A5
6.14.14.00

Reason Heuristics
Adware.WebPick.Installer.U
14.6.12.19

Rising Antivirus
PE:Trojan.AntiFW!6.17F7
23.00.65.14610

Sophos
InstallRex
4.98

Vba32 AntiVirus
Downware.TSU
3.12.26.0

VIPRE Antivirus
Threat.4150696
29708

Zillya! Antivirus
Trojan.AntiFW.Win32.221
2.0.0.1822

File size:
315.1 KB (322,624 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\windows 8.1 activator.exe

Digital Signature
Signed by:
Stas Kosmov

Authority:
COMODO CA Limited

Valid from:
9/24/2013 2:00:00 AM

Valid to:
9/25/2014 1:59:59 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 9:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:5rYbUzkuvcBYC47l2xa6g4FhwjZd/9d1XKxlo/ecwrHs5gn9y:5rdkuveY36kjZP/XKxlSZAHjy

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...
 
[+]

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

The file windows 8.1 activator.exe has been seen being distributed by the following URL.

http://applicationgrabb.net/.../Windows 8.1 Activator.exe

The executing file has been seen to make the following network communication in live environments.

TCP (HTTP):
Connects to r1.stylezip.info  (54.186.255.26:80)

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