» 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:

644d04356d3ab5f5742eb6ca5a7036f8

SHA-1:

dcc5e23c425b82086cbc989bbefc3512d496be53

SHA-256:

525aa2e183597279f9c751865707e84fec3287c062c54f59782f9e919ac16cab

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:

12/25/2024 12:33:24 PM UTC (today)

Scan engine

Detection

Engine version

Reason Heuristics

PUP.WebPick (M)

17.3.5.7

File size:

717.5 KB (734,680 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:

7.8454 (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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