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cs6ogpuw.exe

Ivan Kostin

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 file cs6ogpuw.exe, “Installer for WinterSoft” by Ivan Kostin 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:
WinterSoft  (signed by Ivan Kostin)

Product:
WinterSoft

Description:
Installer for WinterSoft

Version:
2013.10.21.1806

MD5:
38ab93c939c96b795e9da4878688807b

SHA-1:
fb4b0c5ad66fc9a42ed55f5a882c642f3d9e7d07

SHA-256:
9901e221d896752732183277735f688856885e6eaba59b4d028cfc27e07212a3

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 4:35:47 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick.IvanKostin.Installer (M)
16.2.14.22

File size:
303.8 KB (311,080 bytes)

Product version:
1.0.0.1

Copyright:
Copyright © 2013 WinterSoft

Original file name:
TSULoader.exe

Installer:
WebPick InstalleRex (Tarma)

Common path:
C:\users\{user}\appdata\local\temp\cs6ogpuw.exe.part

Digital Signature
Signed by:
Ivan Kostin

Authority:
COMODO CA Limited

Valid from:
8/25/2013 2:00:00 AM

Valid to:
8/26/2014 1:59:59 AM

Subject:
CN=Ivan Kostin, O=Ivan Kostin, STREET=Pobedy 33/1, L=Kyiv, S=Kyiv, PostalCode=03170, C=UA

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

Serial number:
00EB11D24CE6DDBBF752FE4DC3D683D2BF

File PE Metadata
Compilation timestamp:
3/12/2013 9:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:krkX6Y0JQBkQRl7174NpNUM+UHs+h43nRLFJO2t3OEhLSMwcU9P4WbXQx7QSV:krkX63yRl1uqM+gs+2RLTf+QLShvQx7L

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 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=69158294&publisher_id=915&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=207474882&external_id=0&session_id=414949764&hardware_id=484108058&installer_file_name=cs6ogpuw.part

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