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stáhnout.exe

Alexey Kurilenko

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 stáhnout.exe, “Installer for TopApp soft” by Alexey Kurilenko has been detected as adware by 26 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 Alexey Kurilenko)

Product:
TopApp soft

Description:
Installer for TopApp soft

Version:
2014.5.26.2303

MD5:
b276d7bc4b08f9a0bd1356f71e8fc5d7

SHA-1:
20dd3414de10a89f3b2b59c55702fa0530ecb2f4

SHA-256:
4e21b364cd6ece0f4755299509119f6ecc766a0d67ba081c8605885837e1f75c

Scanner detections:
26 / 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:
4/26/2024 9:15:26 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Trojan.AntiFW
7.1.1

AhnLab V3 Security
PUP/Win32.TSULoader
2015.01.03

Avira AntiVirus
Adware/InstallRex.G
7.11.199.42

avast!
Win32:InstalleRex-AZ [PUP]
150101-1

Bkav FE
W32.FamVT.AntiFWK.Trojan
1.3.0.6267

Comodo Security
Application.Win32.InstalleRex.KG
20570

Dr.Web
Trojan.WebPick.2533
9.0.1.05190

ESET NOD32
Win32/InstalleRex.M potentially unwanted application
7.0.302.0

Fortinet FortiGate
Riskware/Generic.AC.4161048
1/2/2015

F-Prot
W32/InstallRex.B
4.6.5.141

G Data
Win32.Application.InstalleRex
15.1.24

K7 AntiVirus
Unwanted-Program
13.1814525

Kaspersky
Trojan.Win32.AntiFW
14.0.0.2701

Malwarebytes
PUP.Optional.InstalleRex
v2015.01.02.06

McAfee
Program.PUP-FHQ
16.8.708.2

NANO AntiVirus
Riskware.Win32.InfoLeak.cvgqot
0.30.0.64448

nProtect
Trojan/W32.AntiFW.323712
15.01.02.01

Panda Antivirus
PUP/TSUploader
15.01.02.06

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.A5
1.15.14.00

Reason Heuristics
Adware.WebPick.Installer.I
15.1.2.17

Rising Antivirus
PE:Trojan.DL.Win32.AntiFW.a!1075355932
23.00.65.141231

Sophos
PUA 'InstallRex'
5.09

Vba32 AntiVirus
Downware.TSU
3.12.26.3

VIPRE Antivirus
Threat.4150696
35418

Zillya! Antivirus
Trojan.AntiFW.Win32.221
2.0.0.2024

File size:
316.1 KB (323,712 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)

Common path:
C:\users\{user}\downloads\stáhnout.exe

Digital Signature
Signed by:
Alexey Kurilenko

Authority:
COMODO CA Limited

Valid from:
7/19/2013 2:00:00 AM

Valid to:
7/20/2014 1:59:59 AM

Subject:
CN=Alexey Kurilenko, O=Alexey Kurilenko, STREET="Str. Sums'ka, 28", L=Kharkiv, S=Kharkivska, PostalCode=61057, C=UA

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

Serial number:
00EC26735E2AD490D07645FA7A606FA1EE

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:PrYbUzkuvcBYC47l2xa6g4FhwjZd/9d1XKxlo/ecwrHs58:PrdkuveY36kjZP/XKxlSZAH9

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 stáhnout.exe has been seen being distributed by the following URL.

http://welovecoupon.eu/v2109?installer_file_name=Stáhnout

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=15760774&publisher_id=576&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=47282322&external_id=0&session_id=94564644&hardware_id=110325418&installer_file_name=stáhnout

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