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sc-8541v7854v2.rar.exe

Ivan Kostin

This program bundles adware during the download and install process using the InstaleRex pay-per-install app monetizer. The application sc-8541v7854v2.rar.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. The file has been seen being downloaded from iframe.yourfilesdatak.asia. 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:
3964e2a5ef4c19952ec85e3bd1ff1158

SHA-1:
c36bb4479935a3b2e5f323137b3f468cfe46ee3e

SHA-256:
7f9f6548aaf3ca2646045a3a5a761a1493a07eb5c58e260706a8b02c5c0f52f2

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 11:43:51 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.WebPick.Installer (M)
16.4.30.22

File size:
303.1 KB (310,368 bytes)

Product version:
1.0.0.1

Copyright:
Copyright © 2013 WinterSoft

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
WebPick InstalleRex (Tarma)

Common path:
C:\users\{user}\downloads\sc-8541v7854v2.rar.exe

Digital Signature
Signed by:
Ivan Kostin

Authority:
COMODO CA Limited

Valid from:
8/25/2013 3:00:00 AM

Valid to:
8/26/2014 2:59:59 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 10:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:LrkX6Y0JQBkQRl7174NpNUM+UHs+h43nRLFJO2t3OEhLSMwcU9P4WbXQx7bK:LrkX63yRl1uqM+gs+2RLTf+QLShvQx72

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...
 
[+]

Entropy:
7.9598

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

The file sc-8541v7854v2.rar.exe has been seen being distributed by the following URL.

http://iframe.yourfilesdatak.asia/76dcf470c673fbbd84bccca0e0e68428/bil/dl.php?id=1382634367476521070&r=http://bookmyzip.in/.../?&q=SC-8541V7854V2.rar&product_name=SC-8541V7854V2.rar&installer_file_name=SC-8541V7854V2.rar&__rnd=781178a0f00d260586c410459d733e36

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=146658770&publisher_id=466&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=439976310&external_id=0&session_id=879952620&hardware_id=1026611390&installer_file_name=sc-8541v7854v2.rar

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