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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 storagenl.info. 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:
2012.8.30.1934

MD5:
597f8068d32af40c6fe21380a017f7c0

SHA-1:
ab99169ae8dff9efd5cc76deeb4db7181576e7cb

SHA-256:
e83d239183057b6152f65751f3e11b1cf1c6e91b2a9d603ab56ffbe977b11009

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:
4/19/2024 10:04:31 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick.NatanRisman.Installer (M)
16.3.7.10

File size:
296.4 KB (303,528 bytes)

Product version:
1.0

Copyright:
Copyright © 2010 Premium

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
WebPick InstalleRex (Tarma)

Language:
Swedish (Sweden)

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

Digital Signature
Signed by:
Natan Risman

Authority:
COMODO CA Limited

Valid from:
6/6/2012 2:00:00 AM

Valid to:
6/7/2013 1:59:59 AM

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:
8/22/2012 4:07:13 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:A0UFOXvx+6JQjyIgCKPcKiar9ql3iM/77NeMAcdLICvtx8:A0Gev+mNCKPcKif77DZWC1x8

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:
7.9568

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 URL.

http://storagenl.info/.../

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=92087562&publisher_id=208&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=276262686&external_id=0&session_id=552525372&hardware_id=644612934&installer_file_name=downloadsetup

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