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download.exe

Anton Melnikov

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 download.exe, “Installer for TopApp software” by Anton Melnikov 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 applicationgrabb.net. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
TopApp software  (signed by Anton Melnikov)

Product:
TopApp software

Description:
Installer for TopApp software

Version:
2014.5.23.1127

MD5:
2c6d96180325a98edeacf58a73e0e639

SHA-1:
92c44829e21a0e2122433041f9e6f6dbc354174d

SHA-256:
a066ac5cdadbe098169f503925f12d66f861376e92454fba137573de82afb4d3

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:
6/17/2024 3:29:23 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware (M)
17.2.19.3

File size:
316.2 KB (323,744 bytes)

Product version:
1.0.0.3

Copyright:
Copyright © 2014 TopApp software

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
WebPick InstalleRex (Tarma)

Language:
Language Neutral

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

Digital Signature
Signed by:
Anton Melnikov

Authority:
COMODO CA Limited

Valid from:
8/26/2013 7:00:00 PM

Valid to:
8/27/2014 6:59:59 PM

Subject:
CN=Anton Melnikov, O=Anton Melnikov, STREET=Borshagovskaya 117, L=Kiev, S=Kiev, PostalCode=03058, C=UA

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

Serial number:
008EFE75FFE332B06C663189A317121232

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

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

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:
7.9537

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

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

http://applicationgrabb.net/.../Download.exe

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=598170508&publisher_id=981&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=1794511524&external_id=0&session_id=3589023048&hardware_id=4187193556&installer_file_name=download

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