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fastdownload.exe

Setup

Natan Risman

This program bundles adware during the download and install process using the InstaleRex pay-per-install app monetizer. The application fastdownload.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:
2012.10.11.1607

MD5:
633f6bb74fae9abe6b29475b5a4f806e

SHA-1:
ff96b2d8b236b93b8cd39ff6ea70a5cf6f33ee4e

SHA-256:
04aa1e4fb0dad17979b713afabb7f025a767c829484f46ca4ca26b3a9dff849d

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:
4/16/2024 9:40:22 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick.NatanRis.Installer (M)
16.3.29.13

File size:
294.9 KB (302,000 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:
Language Neutral

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

Digital Signature
Signed by:
Natan Risman

Authority:
COMODO CA Limited

Valid from:
6/6/2012 1:00:00 AM

Valid to:
6/7/2013 12:59:59 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:
10/1/2012 1:05:52 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:NkGd1DZxlWelOlMVDrcuJSsT4/ZOrss40AJq5aGI+MZX0RoeVJEmdX6z:NkGd1XlHlOqVncoTM4ssSJY3I+fVekKz

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:
7.9558

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

The file fastdownload.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=112645444&publisher_id=126&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=337936332&external_id=0&session_id=675872664&hardware_id=788518108&installer_file_name=fastdownload

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