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fastdownload.exe

Setup

Artua Vladislav

This is a WebPick installer that bundles (with very minimal user consent) a number of adware browser extensions using the JustPlug.it browser framework. The application fastdownload.exe by Artua Vladislav 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 premiumsoft.info. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
Premium  (signed by Artua Vladislav)

Product:
Setup

Description:
Installer

Version:
2012.1.26.1953

MD5:
b3d9a4a696069f8062d824a57ca6c1fd

SHA-1:
ca866a2172164ab684cba50792fc75e14fa05ecf

SHA-256:
608781bed77aceb8687ddbb4d3a24387f24618674ed83ffb54f6e32fdaa4b719

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:
11/6/2024 12:27:08 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick (M)
16.7.18.21

File size:
248.6 KB (254,520 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\fastdownload.exe

Digital Signature
Signed by:
Artua Vladislav

Authority:
The USERTRUST Network

Valid from:
3/14/2011 6:00:00 PM

Valid to:
3/14/2012 5:59:59 PM

Subject:
CN=Artua Vladislav, O=Artua Vladislav, STREET=haRav Dangur 22, L=Bnei Braq, S=Israel, PostalCode=51281, C=IL

Issuer:
CN=UTN-USERFirst-Object, OU=http://www.usertrust.com, O=The USERTRUST Network, L=Salt Lake City, S=UT, C=US

Serial number:
302242B18FB354EA399140DBBA22B786

File PE Metadata
Compilation timestamp:
1/6/2012 12:12:06 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:WxK9bljwkVieLKyF0fY6URv9eyElTLBZRhwercv58grH:WxEbBwkVikIfYNRVe5TLbRhwom8grH

Entry address:
0x149F

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, 22, FF, 15, 5C, 30, 40, 00, 50, 68, A0, 32, 40, 00, E8, 8A, FB, FF, FF, 59, 59, C7, 05, 0C, 44, 40, 00, FF, 00, 00, 00, E9, F7, 01, 00, 00, 56, FF, 15, 58, 30, 40, 00, 8B, 48, 3C, 03, C8, 66, 81, 38, 4D, 5A, 0F, 85, BC, 01, 00, 00, 81...
 
[+]

Entropy:
7.9449

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://premiumsoft.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=266887702&publisher_id=668&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=800663106&external_id=0&session_id=1601326212&hardware_id=1868213914&installer_file_name=fastdownload

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