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mmpsfsg_.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 file mmpsfsg_.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. It is also typically executed from the user's temporary directory. 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:
f9f7fd205a1d58f2bd202d4572634844

SHA-1:
664a6d0ddd58fb687cfd9a2fe5930ab052947f9b

SHA-256:
9f60658947d8f75d80842e527e82eabea384c629df9be9f304f237541fa7ebb1

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 5:05:24 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick (M)
17.1.26.6

File size:
316.1 KB (323,704 bytes)

Product version:
1.0.0.3

Copyright:
Copyright © 2014 MountainApp

Original file name:
TSULoader.exe

Installer:
WebPick InstalleRex (Tarma)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\temp\mmpsfsg_.exe.part

Digital Signature
Signed by:
Oleg Korzut

Authority:
COMODO CA Limited

Valid from:
9/26/2013 7:00:00 AM

Valid to:
9/27/2014 6:59:59 AM

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 PM

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...
 
[+]

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

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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