downloadsetup.exe

Setup

Natan Risman

This program bundles adware during the download and install process using the InstaleRex pay-per-install app monetizer. The application downloadsetup.exe by Natan Risman has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the WebPick InstalleRex (Tarma) installer. The file has been seen being downloaded from fileshare1130.depositfiles.org and multiple other hosts. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
Premium  (signed by Natan Risman)

Product:
Setup

Description:
Installer

Version:
2012.8.9.1543

MD5:
ebef12bffad35c93d699f85f959ee762

SHA-1:
c31188359d63008469649c6cb18cb89d233524f0

SHA-256:
483e7a413cf24bdb98a6b52da08c942451e6d78ad96148d0cbc0ace70ce409c2

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Uses Web-Pick's 'File Product', an Installer which wraps various products and downloads and installs it silently through the process, hosted on TusFiles.

Analysis date:
4/29/2024 6:05:09 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick.NatanRis.Installer (M)
16.3.11.11

File size:
289.8 KB (296,704 bytes)

Product version:
1.0

Copyright:
Copyright © 2010 Premium

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
WebPick InstalleRex (Tarma)

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

Digital Signature
Signed by:

Authority:
COMODO CA Limited

Valid from:
6/5/2012 5:00:00 PM

Valid to:
6/6/2013 4:59:59 PM

Subject:
CN=Natan Risman, O=Natan Risman, STREET=Gordon 6, L=Tel Aviv, S=Israel, PostalCode=63407, C=IL

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

Serial number:
34640F50A673F31E25EF247830CCA289

File PE Metadata
Compilation timestamp:
7/27/2012 7:31:25 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:5W1pwwKeFqzDNQkoSt3g3+gJHI5+/dlNbtovcj48xKjdIs0oPiEjZb:5W4wxCQEtj6o5Cdll948Q+oPiEh

Entry address:
0x14A3

Entry point:
55, 8B, EC, 81, EC, 24, 06, 00, 00, 53, 56, 33, F6, 57, 66, 89, B5, E4, FB, FF, FF, 89, 75, F4, 89, 75, FC, FF, 15, 68, 30, 40, 00, A3, 08, 44, 40, 00, FF, 15, 64, 30, 40, 00, 89, 45, F8, 68, 04, 01, 00, 00, 8D, 85, DC, F9, FF, FF, 50, 56, FF, 15, 60, 30, 40, 00, 85, C0, 75, 41, FF, 15, 5C, 30, 40, 00, 83, F8, 78, 75, 1A, 68, BC, 32, 40, 00, E8, 82, FB, FF, FF, 59, C7, 05, 0C, 44, 40, 00, FD, 00, 00, 00, E9, 13, 02, 00, 00, 50, 68, 98, 32, 40, 00, E8, 67, FB, FF, FF, 59, 59, C7, 05, 0C, 44, 40, 00, FF, 00...
 
[+]

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

The file downloadsetup.exe has been seen being distributed by the following 2 URLs.

http://fileshare1130.depositfiles.org/auth-1435365026c9c866d7d4efd99d09d5f9-190.16.32.27-2154289565-131289450-guest/.../DownloadSetup.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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