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download.exe

Yakov Cohen

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 application download.exe, “Installer for StarApp” by Yakov Cohen 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 applicationsforeveryy.asia. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
StarApp  (signed by Yakov Cohen)

Product:
StarApp

Description:
Installer for StarApp

Version:
2013.7.4.1638

MD5:
1c7ffc35ed167c753f27eae099530335

SHA-1:
12b1f8f01a510c5e1b7d509d6309c5cc679c9738

SHA-256:
71b3cfca3367a34df75f1636bd365b71f81a47192114eca4c01f0146af22e352

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 7:32:20 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware (M)
16.7.17.13

File size:
292.3 KB (299,312 bytes)

Product version:
1.0.0.1

Copyright:
Copyright © 2012 StarApp

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
WebPick InstalleRex (Tarma)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\download.exe

Digital Signature
Signed by:
Yakov Cohen

Authority:
COMODO CA Limited

Valid from:
8/1/2012 8:00:00 PM

Valid to:
8/2/2013 7:59:59 PM

Subject:
CN=Yakov Cohen, O=Yakov Cohen, STREET=Rodenski 10, L=Tel Aviv, S=Israel, PostalCode=69360, C=IL

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

Serial number:
009AF809F48BC879375BE578151D15C51C

File PE Metadata
Compilation timestamp:
3/12/2013 4:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:lrk/9uEo2S1YnQmCX492DkwNP3qpYFYjwrShcFvViiyeVMPNuyloTaTuEG8:lrk1u6/eIo4+mhcF9iiyaMPNFlo538

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:
7.9528

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://applicationsforeveryy.asia/v684?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

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=264442458&publisher_id=644&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=793327374&external_id=0&session_id=1586654748&hardware_id=1851097206&installer_file_name=download

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