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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:
c98522326338eb6cea89c6cd61e40fbc

SHA-1:
ebf0637e01c1c24a687f13aa0ae1fd3c20b2d4fe

SHA-256:
ea926094a11c0e24c451c2273e595063cad9df987927814c63c2a78fbc923a05

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:
4/24/2024 8:34:05 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware (M)
16.8.1.16

File size:
292.3 KB (299,304 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)

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

Digital Signature
Signed by:
Yakov Cohen

Authority:
COMODO CA Limited

Valid from:
8/1/2012 5:00:00 PM

Valid to:
8/2/2013 4:59:59 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 1:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:9rk/9uEo2S1YnQmCX492DkwNP3qpYFYjwrShcFvViiyeVMPNuyloTaTuEGq:9rk1u6/eIo4+mhcF9iiyaMPNFlo53q

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://applicationsforeveryy.asia/v944?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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=293568382&publisher_id=935&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=880705146&external_id=0&session_id=1761410292&hardware_id=2054978674&installer_file_name=download

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