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download.exe

Boris Burkin

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 Boris Burkin 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 iframe.guidehoome.com. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
TopApp software  (signed by Boris Burkin)

Product:
TopApp software

Description:
Installer for TopApp software

Version:
2014.5.23.1127

MD5:
94f320b4cf37c140f1a1ae71ab59caaa

SHA-1:
6048310f7889d4ab2e3de001ee2dee34b7cee688

SHA-256:
af112b076f72d570c1bc658869d3d1f9b38afeb495d4fd4fb7c8764d55078bb7

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:
4/18/2024 11:55:06 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

Reason Heuristics
Adware (M)
16.8.8.10

File size:
315 KB (322,600 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)

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

Digital Signature
Signed by:
Boris Burkin

Authority:
COMODO CA Limited

Valid from:
9/19/2013 3:00:00 AM

Valid to:
9/20/2014 2:59:59 AM

Subject:
CN=Boris Burkin, O=Boris Burkin, STREET=Tankistiv 14, L=Kyiv, S=Kyivska, PostalCode=03061, C=UA

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

Serial number:
033AD040336E8286DF7ACF4D4908361F

File PE Metadata
Compilation timestamp:
3/12/2013 10:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:crYbUzkuvcBYC47l2xLnvhueEZdkKQ3+7Oj7hTOVA1HWZh:crdkuveY3CvI5Zdkj6OEu1HSh

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://iframe.guidehoome.com/4b58c50d5dd56338757bcc782a0555dc/uploadez/dl.php?id=1400917426761272101&r=http://applicationgrabb.com/.../?&q=Download&product_name=Download&installer_file_name=Download&id=1400917426761272101&d=2273&q=Download&__rnd=31bd235b81fef4f79c6989eb40523363&__rnd=3479769964171dcf04dc4e9bc55429cc

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=306340064&publisher_id=063&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=919020192&external_id=0&session_id=1838040384&hardware_id=2144380448&installer_file_name=download

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