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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:
2013.7.23.2048

MD5:
0f8af18857e9514c9b058348dfe5f04f

SHA-1:
525b4dce80d0f78684a07d0464354ec47b116491

SHA-256:
55746d1ddd997f21cb579133b77d16962aca69451ae99a9cc523ea5c44faa995

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:
4/23/2024 8:11:08 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware (M)
16.7.16.19

File size:
293.8 KB (300,824 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 12:00:00 PM

Valid to:
8/2/2013 11:59:59 AM

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:
3/11/2013 8:51:45 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:grk29uEo2S1YnQmCX492DkwNP3qpYFruKBCkW1vN8d5kGZUB1mGmafKgsJkwgBgA:grkOu6/eIo4e1ivEKnmGmCBsJk9

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:
7.9542

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=263249070&publisher_id=632&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=789747210&external_id=0&session_id=1579494420&hardware_id=1842743490&installer_file_name=download

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