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Desktop.OS.dll

Desktop

Yontoo LLC

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module Desktop.OS.dll by Yontoo has been detected as adware by 8 anti-malware scanners.
Publisher:
Yontoo LLC  (signed and verified)

Product:
Desktop

Description:
VGCDesktop.OS

Version:
1.0.0.0

MD5:
5f88d34a491a640e5b201646ad9c69d3

SHA-1:
fc4c4e89ca507e54339c39265c9b9264594bcb78

SHA-256:
b13d9537ed79b589cdafe905ef24c309111e85891c61e428e316aa3af27f9175

Scanner detections:
8 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
11/15/2024 1:02:31 AM UTC  (today)

Scan engine
Detection
Engine version

AVG
AdInject.Yontoo
2016.0.3092

Bkav FE
W32.HfsAdware
1.3.0.6379

Dr.Web
Adware.Yontoo.78
9.0.1.05190

McAfee
Artemis!5CA1D935D6BD
5600.6748

Reason Heuristics
PUP.Yontoo
15.5.31.9

Trend Micro House Call
TROJ_GEN.R047H05CA15
7.2.151

Trend Micro
TROJ_SPNV.03J713
10.465.31

VIPRE Antivirus
Yontoo
39048

File size:
62.3 KB (63,776 bytes)

Product version:
1.0.0.0

Original file name:
Desktop.OS.dll

File type:
Dynamic link library (Win32 DLL)

Language:
Language Neutral

Common path:
C:\users\{user}\desktop.os.dll

Digital Signature
Signed by:
Yontoo LLC

Authority:
VeriSign, Inc.

Valid from:
1/2/2014 6:00:00 PM

Valid to:
2/2/2015 5:59:59 PM

Subject:
CN=Yontoo LLC, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Yontoo LLC, L=Carlsbad, 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:
3AED60574343204F777D640FE767E84C

File PE Metadata
Compilation timestamp:
1/8/2014 2:43:50 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
11.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
768:XR7iImIxN0VcwZSUgVKtU9SpJJ+9C/HpCMUTsqruhLosn93Bwx5LkUJ:XRmImlqwZgK29SpJJUAJCzALtRBwx5LB

Entry address:
0xF6AE

Entry point:
FF, 25, 00, 20, 00, 10, 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, 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...
 
[+]

Entropy:
5.9313

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

Code size:
54 KB (55,296 bytes)

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