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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. 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:
c9b4bb4d863404446333acf734867a05

SHA-1:
75ce8b343eab9fc621fd32b8a2772246430fc8b8

SHA-256:
ee2fc173829e1e6e72eea5f240cd7778c0ede717becdacf5b585bd808a745590

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:
11/2/2024 5:22:07 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick (M)
17.3.9.4

File size:
717.4 KB (734,616 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:
8/5/2013 7:00:00 PM

Valid to:
8/6/2014 6:59:59 PM

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 AM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

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:
7.8493  (probably packed)

Code size:
87.5 KB (89,600 bytes)

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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