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download.exe

Oleg Korzut

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 Oleg Korzut 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:
MountainApp  (signed by Oleg Korzut)

Product:
MountainApp

Description:
Installer for MountainApp

Version:
2014.6.12.1603

MD5:
0be24692d56696fcce99172280383d52

SHA-1:
7fe164fc8646abbfef7e3a7c9bbbbaf0964a532d

SHA-256:
abb256087ae8eda2334fbe6372cd83251b99f0a08331e397de061b50560bfddf

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:
12/26/2024 1:03:28 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware (M)
16.12.2.4

File size:
316.1 KB (323,728 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}\downloads\download.exe

Digital Signature
Signed by:
Oleg Korzut

Authority:
COMODO CA Limited

Valid from:
9/25/2013 7:00:00 PM

Valid to:
9/26/2014 6:59:59 PM

Subject:
CN=Oleg Korzut, O=Oleg Korzut, STREET=Pohyla 17, L=Kiev, S=Kiev, PostalCode=03138, C=UA

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

Serial number:
00CFEB32B2789BB03EF7190286335B1888

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

CTPH (ssdeep):
6144:tr5bUzkuvcBYC47l2xhXcDp5xikxyI3rqrupq0FNhAna9iydforD2j5:trqkuveY3fxikxyI7qSpBAna4ydfE2t

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

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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