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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:
a6933e977ae1ca107f85a58b61238cf9

SHA-1:
77e7e333e96d2d2c345adfed3d38bae338e9d3dc

SHA-256:
4dbb3d912ab3966e8997ea299fbce1d80c222f60cbad14a7244f58a0016abc92

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 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
4/25/2024 8:13:11 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick.ArturSemanin.Bundler (M)
16.2.4.7

File size:
717.3 KB (734,552 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:BKnekrL58URIJfBUDQ9uUekpsVYn9WmbS7j69w1ILPTDr/LKlur411eDwWKT:OLirdBUltfVYn9BS69NXf/Lmh1ABs

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:
7.8426  (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=298&country=TH&ind=2137702040350335377&exid=0&ssd=4139018033561513866&hid=3835723462709313228&osid=601&channel=0&sfx=1&category_name=SaveShare&install_date=20120923

The executing file has been seen to make the following network communication in live environments.

TCP (HTTP):
Connects to r1.stylezip.info  (54.186.255.26:80)

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