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downloadmanager.exe

Moshe Caspi

This program bundles adware during the download and install process using the InstaleRex pay-per-install app monetizer. The application downloadmanager.exe, “Installer for StarApp” by Moshe Caspi 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 Moshe Caspi)

Product:
StarApp

Description:
Installer for StarApp

Version:
2013.6.19.1256

MD5:
112fec0aeafcd5968ef72c8e9a0a3cbc

SHA-1:
a49f6875035b3362f23fb9c874087ccc26ae4f1e

SHA-256:
93a687bc6140bc2050511e6951cc450e365cf1015531de2071074602b6f802b8

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 9:02:57 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.WebPick.Installer (M)
16.5.26.3

File size:
286.5 KB (293,392 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)

Language:
Language Neutral

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

Digital Signature
Signed by:
Moshe Caspi

Authority:
COMODO CA Limited

Valid from:
8/1/2012 7:00:00 PM

Valid to:
8/2/2013 6:59:59 PM

Subject:
CN=Moshe Caspi, O=Moshe Caspi, STREET=Hashuk 39, L=Tel Aviv, S=Israel, PostalCode=66067, C=IL

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

Serial number:
00B1B859272556EC39AF8F0E4A626C2ADC

File PE Metadata
Compilation timestamp:
3/12/2013 2:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:Yrkq6Y0JQBkQRl7174NpNUM+UHs+FAk6dU+h1xSx684Ys05d7PHh:Yrkq63yRl1uqM+gs+mkuUEaYb4dLh

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:
7.9550

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

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

http://www.storebox1.info/v1160?product_name=Uploaded&product_title=Uploaded&filesize=216503348&installer_file_name=DownloadManager&product_file_name=SpN.7x04.avi&product_download_url=http://fra-7m20-stor01.uploaded.net/.../bd255922-d68b-42bd-88b2-86c068c98590

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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