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download.exe

YL production

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 download.exe, “Installer for TopApp soft” by YL production has been detected as adware by 34 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 YL production)

Product:
TopApp soft

Description:
Installer for TopApp soft

Version:
2014.5.26.2303

MD5:
00c0694c5627c08199b58dac7b5cc5f0

SHA-1:
51db064bed4ef53e7133a7a83edd33118cd8e100

SHA-256:
961fdc5e10362888fe164511d768145ae243364b96870897a35067114607ed55

Scanner detections:
34 / 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:
4/19/2024 8:04:33 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Trojan.Generic.11359083
838

Agnitum Outpost
Trojan.AntiFW
7.1.1

AhnLab V3 Security
PUP/Win32.TSULoader
2014.06.13

Avira AntiVirus
Adware/InstallRex.G
7.11.154.152

avast!
Win32:InstalleRex-BW [PUP]
141003-0

AVG
Generic
2015.0.3316

Bitdefender
Trojan.Generic.11359083
1.0.20.1460

Bkav FE
HW32.CDB
1.3.0.4959

Clam AntiVirus
Win.Trojan.Antifw-7
0.98/19445

Comodo Security
Application.Win32.InstalleRex.KG
18525

Dr.Web
Trojan.WebPick.2579
9.0.1.05190

Emsisoft Anti-Malware
Trojan.Generic.11349117
14.10.19

ESET NOD32
Win32/InstalleRex.M potentially unwanted application
7.0.302.0

Fortinet FortiGate
Riskware/Generic.AC.4161048
10/19/2014

F-Prot
W32/InstallRex.B
v6.4.6.5.141

F-Secure
Trojan.Generic.11359083
11.2014-19-10_1

G Data
Trojan.Generic.11359083
14.10.24

IKARUS anti.virus
PUA.LebDev
t3scan.1.6.1.0

K7 AntiVirus
Unwanted-Program
13.1712387

Kaspersky
Trojan.Win32.AntiFW
15.0.0.494

Malwarebytes
PUP.Optional.InstalleRex
v2014.10.19.09

McAfee
PUP-FHQ!8F8D3E8CA8BD
5600.6972

MicroWorld eScan
Trojan.Generic.11359083
15.0.0.876

NANO AntiVirus
Riskware.Win32.InfoLeak.cvgqot
0.28.0.60253

nProtect
Trojan.Generic.11359083
14.06.12.01

Panda Antivirus
PUP/TSUploader
14.10.19.09

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.A5
10.14.14.00

Reason Heuristics
Adware.WebPick.Installer.I
14.10.19.20

Rising Antivirus
PE:Trojan.AntiFW!6.17F7
23.00.65.141017

Sophos
InstallRex
4.98

Vba32 AntiVirus
Downware.TSU
3.12.26.0

VIPRE Antivirus
Threat.4150696
29708

Zillya! Antivirus
Trojan.AntiFW.Win32.221
2.0.0.1821

File size:
315 KB (322,592 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\download.exe

Digital Signature
Signed by:
YL production

Authority:
Unizeto Technologies S.A.

Valid from:
1/16/2014 7:49:26 AM

Valid to:
1/16/2015 7:49:26 AM

Subject:
E=Lebedev72@hotmail.com, CN="Open Source Developer, Yuri LEBEDEV", O=YL production, C=RU

Issuer:
CN=Certum Level III CA, OU=Certum Certification Authority, O=Unizeto Technologies S.A., C=PL

Serial number:
284B7B8274AFC7E851A73B98B619311F

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:GrYbUzkuvcBYC47l2xa6g4FhwjZd/9d1XKxlo/ecwrHs5v:GrdkuveY36kjZP/XKxlSZAH2

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 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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