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torrentdownload.exe

Nadav Kashtan

This program bundles adware during the download and install process using the InstaleRex pay-per-install app monetizer. The application torrentdownload.exe, “Installer for StarApp” by Nadav Kashtan 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 www.storebox1.info. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
StarApp  (signed by Nadav Kashtan)

Product:
StarApp

Description:
Installer for StarApp

Version:
2013.8.6.1937

MD5:
8d1fe4bee8f079269e94b1b5fa52208b

SHA-1:
d4b484d83f85b22d9a6b03a3ac26c3bb4466d539

SHA-256:
928b64f223c7540b08ad88f2bb893cb27eed777e410e85d7982e689b7b753f5c

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:
4/25/2024 9:49:18 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.WebPick.Installer.P
14.8.8.0

File size:
294.1 KB (301,144 bytes)

Product version:
1.0.0.1

Copyright:
Copyright © 2012 StarApp

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
WebPick InstalleRex (Tarma)

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

Digital Signature
Signed by:
Nadav Kashtan

Authority:
COMODO CA Limited

Valid from:
11/5/2012 1:00:00 AM

Valid to:
11/6/2013 12:59:59 AM

Subject:
CN=Nadav Kashtan, O=Nadav Kashtan, STREET=Bizron 38, L=Tel Aviv, S=center, PostalCode=67894, C=IL

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

Serial number:
00F861471B38887DE98076AFF491B1B1B3

File PE Metadata
Compilation timestamp:
3/12/2013 9:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:urkF6Y0JQBkQRl7174NpNUM+UHs+T87bUw4Ms9Cbk8rFK7S6B8ON+FU1nr15:urkF63yRl1uqM+gs+VzHp8rF2dN+FUH5

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...
 
[+]

Code size:
7.5 KB (7,680 bytes)

The file torrentdownload.exe has been seen being distributed by the following URL.

http://www.storebox1.info/v242?product_name=Windows 8 Professional Retail WMC (Windows Media Center) [x64x86] by Bukmop....&magnetlink=magnet:?xt=urn:btih:a49b1488456d6ced742035f8892082bec157d4bb&tr=udp://bt.rutor&tr=udp://tracker.openbittorrent.com:80&tr=udp://tracker.publicbt.com:80&dn=Windows 8 Professional Retail WMC (Windows Media Center) [x64x86] by Bukmop....

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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