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utilconstasurf.exe

ConstaSurf

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application utilconstasurf.exe by ConstaSurf has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat.
Publisher:
ConstaSurf  (signed and verified)

Version:
1.0.5399.37525

MD5:
1db392aeb0bfa1b54d731149ef750244

SHA-1:
fc01c613f5635a98105c2101532a8c9eb75a19fa

SHA-256:
0485097351e35a5b9bacde67b0dfb8afa94d3f2f080fdf043719e71e2d5732be

Scanner detections:
1 / 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:
4/24/2024 5:20:01 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.ConstaSurf (M)
16.2.14.19

File size:
510.3 KB (522,528 bytes)

Product version:
1.0.5399.37525

Original file name:
ConstaSurf.exe

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\Program Files\constasurf\bin\utilconstasurf.exe

Digital Signature
Signed by:
ConstaSurf

Authority:
VeriSign, Inc.

Valid from:
3/19/2014 7:00:00 AM

Valid to:
3/20/2015 6:59:59 AM

Subject:
CN=ConstaSurf, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=ConstaSurf, L=Santa Monica, 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:
46A82C62F93896A2C29C94EC6C4D8A3D

File PE Metadata
Compilation timestamp:
10/14/2014 11:50:54 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
6.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
12288:3vDDNJF2Gt9MujNvaCf5Rc9AQ+llEHmAuqh1HiBhZXoU:3bjfnMuNllEHmNqXUTZ

Entry address:
0x7F46A

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, 02, 00, 00, 00, 5D, 00, 00, 00, AC, F4, 07, 00, AC, D6, 07, 00, 52, 53, 44, 53, 5A, 04, 87, F3, C8, CC, BF, 4A, 91, 8F, 0B, D8, 32, 2D, 80, 75, 01, 00, 00, 00, 44, 3A, 5C, 55, 74, 69, 6C, 69, 74, 69, 65, 73, 5C, 73, 73, 34, 6C, 77, 77, 6B, 6D, 2E, 6C, 33, 62, 5C, 44, 65, 73, 6B, 74, 6F, 70, 5C, 44, 65, 73, 6B...
 
[+]

Entropy:
5.9075

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

Code size:
501.5 KB (513,536 bytes)

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