» extfs_setup.exe
Overview
Analysis
File Details
Network (1)

extfs_setup.exe

Artur Semanin

This program bundles adware during the download and install process using the InstaleRex pay-per-install app monetizer. The application extfs_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.

File name:

extfs_setup.exe

Publisher:

Artur Semanin (signed and verified)

MD5:

abb3c781b18501d0cd969fdf1dd7da2d

SHA-1:

9ad277c89f995fcee5681f0bf7bd51186684754f

SHA-256:

01fa5ab0518d6c113b53668304ce55c4b0a212cfcd0e99d3ffcb0064afe09048

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 an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:

4/23/2024 9:19:24 AM UTC (today)

Scan engine

Detection

Engine version

Reason Heuristics

PUP.WebPick (M)

17.3.5.7

File size:

717.2 KB (734,424 bytes)

File type:

Executable application (Win32 EXE)

Bundler/Installer:

WebPick InstalleRex

Common path:

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

Digital Signature

Signed by:

Artur Semanin

Authority:

COMODO CA Limited

Valid from:

8/6/2013 5:30:00 AM

Valid to:

8/7/2014 5:29:59 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 10:22:38 PM

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:

7.8467 (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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