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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:
2012.11.8.1120

MD5:
248ec2e7a85c9671a9a3c144c24c5a32

SHA-1:
3418a9157cf0c3d2924ce65aec1c613cd00b111d

SHA-256:
43b8fec0fdd43e16acb08021431572f6ddba1c001104185ab9a6c3a9c8b6775e

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:
4/27/2024 2:16:52 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick.NatanRis.Installer (M)
16.8.9.14

File size:
294.4 KB (301,504 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 5:30:00 AM

Valid to:
6/7/2013 5:29:59 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:
11/2/2012 3:21:06 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:XQEn9aA+NXagZei5DtsUAIkhZIK5jEgVtdwFBnzsQP6A1J1EqGy:XQW9alagZp9ieNjnIgOi

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:
7.9592

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/.../?affiliate_id=eb6

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=309003604&publisher_id=090&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=927010812&external_id=0&session_id=1854021624&hardware_id=2163025228&installer_file_name=fastdownload

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