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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:
1bf648e858237e99bd7950fd056621c3

SHA-1:
29823911192387430b9718da59f179d7cc3bdcf9

SHA-256:
c455aa287b7554408763bd25b8c00fcff63e73acff9af43370b84422c1ec3b61

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:
4/19/2024 10:08:14 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware (M)
16.7.30.18

File size:
315.1 KB (322,648 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:
Boris Burkin

Authority:
COMODO CA Limited

Valid from:
9/18/2013 9:00:00 PM

Valid to:
9/19/2014 8:59:59 PM

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 5:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:srYbUzkuvcBYC47l2xLnvhueEZdkKQ3+7Oj7hTOVA1HWZl:srdkuveY3CvI5Zdkj6OEu1HSl

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...
 
[+]

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/02c1e3e0d98e534bbb7b98afcf4f8fb5/assist/dl.php?id=1400894666490451307&r=http://applicationgrabb.com/.../?&q=Download&product_name=Download&installer_file_name=Download&id=1400894666490451307&d=1970&q=Download&__rnd=9d10bec024e91163f50c59fa175b7b93&affiliate_id=assistrtv&__rnd=73d1e6460cfc2f71d69eeda6deb01fd6

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=290160376&publisher_id=901&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=870481128&external_id=0&session_id=1740962256&hardware_id=2031122632&installer_file_name=download

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