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ext_setup.exe

Artur Semanin

This program bundles adware during the download and install process using the InstaleRex pay-per-install app monetizer. The application ext_setup.exe by Artur Semanin 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. The file has been seen being downloaded from yourdepothomey.asia. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
Artur Semanin  (signed and verified)

MD5:
1d412b87e6ad12a1e61e9d8a38116281

SHA-1:
1768c5190e4b01f4e5e43bcf0927942763b67222

SHA-256:
4da6d58b8cce457d171b8c96a4d4e1b48ca54ead56ec12c74b245cb4b20db85b

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:
5/18/2024 10:15:44 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick.ArturSemanin.Bundler (M)
16.1.8.14

File size:
717.3 KB (734,488 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:
Artur Semanin

Authority:
COMODO CA Limited

Valid from:
8/6/2013 7:00:00 AM

Valid to:
8/7/2014 6:59:59 AM

Subject:
CN=Artur Semanin, O=Artur Semanin, STREET=Radishcheva 8, L=Kyiv, S=Kyiv, PostalCode=03164, C=UA

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

Serial number:
38BEDBA31B62D500B998286A80E230EB

File PE Metadata
Compilation timestamp:
7/11/2013 11:52:38 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
12288:BKnekrL5830qzy3Vw8xJzz3Y723vA84Wuih2ZlcXkoZ8oBtboV:OLi3k3Vw8ncYt5hh2ZlcXk68oB9oV

Entry address:
0xD374

Entry point:
E8, B2, 50, 00, 00, E9, 78, FE, FF, FF, 8B, FF, 55, 8B, EC, 8B, 45, 08, 33, C9, 3B, 04, CD, 38, 72, 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, 3C, 72, 41, 00, 5D, C3, 05, 44, FF, FF, FF, 6A, 0E, 59, 3B, C8, 1B, C0, 23, C1, 83, C0, 08, 5D, C3, E8, 87, 19, 00, 00, 85, C0, 75, 06, B8, A0, 73, 41, 00, C3, 83, C0, 08, C3, E8, 74, 19, 00, 00, 85, C0, 75, 06, B8, A4, 73, 41, 00, C3, 83, C0, 0C, C3, 8B, FF, 55, 8B, EC, 56, E8, E2, FF, FF, FF, 8B, 4D, 08...
 
[+]

Entropy:
7.8489  (probably packed)

Code size:
87.5 KB (89,600 bytes)

The file ext_setup.exe has been seen being distributed by the following URL.

http://yourdepothomey.asia/?e=74055d&publisher=821&country=ID&ind=14506268094902472693&exid=0&ssd=18296645852309178079&hid=5692557861393497116&osid=601&channel=0&sfx=1&category_name=SaveShare&install_date=20120924

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=44140536&publisher_id=414&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=132421608&external_id=0&session_id=264843216&hardware_id=308983752&installer_file_name=ext_setup

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