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Webfuii.FirstRun.exe

FirstRun

Webfuii

The Yontoo branded FirstRun executable is distributed as part of a Yontoo product bundle and is desigend to install components of this ad-supported (injection) program as well as 'call home' to inform the server that the extension was installed and may request additional instructions. The application Webfuii.FirstRun.exe by Webfuii has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat.
Publisher:
Webfuii  (signed and verified)

Product:
FirstRun

Version:
1.0.0.0

MD5:
39d08196e476dc7b92b7cf78b3a43f7a

SHA-1:
cbdfdcf169bb2ec7033dd8f546c8b807b9c8579b

SHA-256:
89f2533988d1e08f6f167b44a238769edb4d6774df664646e838abfc684f7826

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Part of the Yontoo ad injection web browser add-on.

Analysis date:
4/25/2024 4:24:35 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.Yontoo.Webfuii (M)
16.2.13.0

File size:
1 MB (1,091,352 bytes)

Product version:
1.0.0.0

Copyright:
Copyright © 2014

Original file name:
Webfuii.FirstRun.exe

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\Program Files\webfuii\webfuii.firstrun.exe

Digital Signature
Signed by:
Webfuii

Authority:
VeriSign, Inc.

Valid from:
10/7/2013 7:00:00 AM

Valid to:
10/8/2014 6:59:59 AM

Subject:
CN=Webfuii, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Webfuii, L=San Diego, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
658C92DE4B1AFFD7A1D69F49D0D049BA

File PE Metadata
Compilation timestamp:
2/13/2014 12:37:20 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
8.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
24576:xr3wD25ZRWj1rOLCoB6knyCX8ghasrSj6eHfaz7bPKaV5:xrBZRWj1rHSlP8gKj6eHfaz7Wan

Entry address:
0x10A3B2

Entry point:
FF, 25, 00, 20, 40, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 02, 00, 10, 00, 00, 00, 20, 00, 00, 80, 18, 00, 00, 00, 2C, 03, 00, 80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 01, 00, 01, 00...
 
[+]

Entropy:
7.9467

Developed / compiled with:
Microsoft Visual C# / Basic .NET

Code size:
1 MB (1,082,368 bytes)

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