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utilysearchservice.exe

Alactro LLC

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application utilysearchservice.exe by Alactro has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It runs as a separate (within the context of its own process) windows Service named “Update ysearchservice”.
Publisher:
Alactro LLC  (signed and verified)

Version:
1.0.5617.4400

MD5:
ab2b853ab62023f3cbc2614bc8c7b2cb

SHA-1:
9d7a75d8f7a9e2a48f9dd554812f34000f8d589f

SHA-256:
7d8e4953e44c4bb9ff5769acc1683b6141debe067d28f26f6daa1a53d486080d

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:
5/4/2024 4:34:02 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
16.7.25.15

File size:
640.8 KB (656,160 bytes)

Product version:
1.0.5617.4400

Original file name:
ysearchservice2015051910.exe

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\Program Files\ysearchservice\bin\utilysearchservice.exe

Digital Signature
Signed by:
Alactro LLC

Authority:
VeriSign, Inc.

Valid from:
6/24/2013 7:00:00 PM

Valid to:
8/23/2016 6:59:59 PM

Subject:
CN=Alactro LLC, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Alactro LLC, L=Grandville, S=Michigan, 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:
018D4FCE8B07C5BF93892F3E2AB578D5

File PE Metadata
Compilation timestamp:
5/19/2015 5:26:56 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
11.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
6144:lboYVqMEyHLkICdOkeD20dPyWrMNZpd1t2abyQ1LjQQBRKDYw5WgxQgJjDkOfL6d:dDQS9X20dPyWrin1nb/8oRAPxpJjzLvE

Entry address:
0x9FE52

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, 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:
6.1676

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

Code size:
632 KB (647,168 bytes)

Service
Display name:
Update ysearchservice

Type:
Win32OwnProcess


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