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download.exe

Pavel Marchenko

This is a WebPick installer that bundles (with very minimal user consent) a number of adware browser extensions which inject ads in the browser. The application download.exe, “Installer for MountainApp” by Pavel Marchenko 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. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from coupoonice.com. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
MountainApp  (signed by Pavel Marchenko)

Product:
MountainApp

Description:
Installer for MountainApp

Version:
2014.6.12.1603

MD5:
d56fe2eb121bac783f8815003128a94b

SHA-1:
334c87ea80507c95b0eb67d829e1108052ed5757

SHA-256:
42bdb973dd25e57c00a26df1655e2bb8b37f1c8796139bf44d40c8c0640b6da4

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:
4/26/2024 7:24:51 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.WebPick.Installer (M)
16.7.4.5

File size:
315 KB (322,560 bytes)

Product version:
1.0.0.3

Copyright:
Copyright © 2014 MountainApp

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
WebPick InstalleRex (Tarma)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\download.exe

Digital Signature
Signed by:
Pavel Marchenko

Authority:
COMODO CA Limited

Valid from:
9/23/2013 9:00:00 PM

Valid to:
9/24/2014 8:59:59 PM

Subject:
CN=Pavel Marchenko, O=Pavel Marchenko, STREET=Radistov 34, L=Kiev, S=Kiev, PostalCode=02089, C=UA

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

Serial number:
46402EC14719EBF7B1CB4ADAC69CC041

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:ir5bUzkuvcBYC47l2xhXcDp5xikxyI3rqrupq0FNhAna9iydforDc:irqkuveY3fxikxyI7qSpBAna4ydfEc

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://coupoonice.com/.../?&q=Download&product_name=Download&installer_file_name=Download&external_id=1402698364025662511

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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