» ext_setup.exe
Overview
Analysis
File Details
Network (2)

ext_setup.exe

Ostap Laponov

This program bundles adware during the download and install process using the InstaleRex pay-per-install app monetizer. The application ext_setup.exe by Ostap Laponov 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 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.

File name:

ext_setup.exe

Publisher:

Ostap Laponov (signed and verified)

MD5:

20904a8b5770097a1968e3c3960c6c08

SHA-1:

21e5912a09518ed000f13f20bc8f2d1570228407

SHA-256:

c63af4801504245e03cce56e5ee1d3b6b79e606ff3fd7e89fc24ef6032fe8db8

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.

Description:

This is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:

4/23/2024 6:55:15 AM UTC (today)

Scan engine

Detection

Engine version

Reason Heuristics

PUP.WebPick (M)

17.3.14.5

File size:

1.5 MB (1,613,400 bytes)

File type:

Executable application (Win32 EXE)

Bundler/Installer:

WebPick InstalleRex

Common path:

C:\users\{user}\appdata\local\temp\{random}.tmp\addons\ext_setup.exe

Digital Signature

Signed by:

Ostap Laponov

Authority:

COMODO CA Limited

Valid from:

9/8/2013 6:00:00 PM

Valid to:

9/9/2014 5:59:59 PM

Subject:

CN=Ostap Laponov, O=Ostap Laponov, STREET=Minskаya 16, L=Kiev, S=Kiev, PostalCode=04078, C=UA

Issuer:

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

Serial number:

00EA64F94CDE70375038736C9F1C0960DF

File PE Metadata

Compilation timestamp:

12/2/2013 9:27:36 PM

OS version:

5.1

OS bitness:

Win32

Subsystem:

Windows GUI

Linker version:

10.0

Entry address:

0x10687

Entry point:

E8, 38, 3F, 00, 00, E9, 89, FE, FF, FF, 8B, FF, 55, 8B, EC, 8B, 45, 08, 33, C9, 3B, 04, CD, 28, F0, 41, 00, 74, 13, 41, 83, F9, 2D, 72, F1, 8D, 48, ED, 83, F9, 11, 77, 0E, 6A, 0D, 58, 5D, C3, 8B, 04, CD, 2C, F0, 41, 00, 5D, C3, 05, 44, FF, FF, FF, 6A, 0E, 59, 3B, C8, 1B, C0, 23, C1, 83, C0, 08, 5D, C3, E8, DC, 07, 00, 00, 85, C0, 75, 06, B8, 90, F1, 41, 00, C3, 83, C0, 08, C3, E8, C9, 07, 00, 00, 85, C0, 75, 06, B8, 94, F1, 41, 00, C3, 83, C0, 0C, C3, 8B, FF, 55, 8B, EC, 56, E8, E2, FF, FF, FF, 8B, 4D, 08... 
[+]

Entropy:

7.9435 (probably packed)

Code size:

96 KB (98,304 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=631618116&publisher_id=316&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=1894854348&external_id=0&session_id=3789708696&hardware_id=4421326812&installer_file_name=ext_setup

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