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updateysearchservice.exe

Alactro LLC

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application updateysearchservice.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:
1.0.6079.22535

MD5:
e1359d86efb2f363bcda64d7511c90ca

SHA-1:
bed045ed30ea3257da4bc72804d87200a51960ea

SHA-256:
6cdbce4b65263a4429d9ffad8f1e52dd31dab069308be634c13c36a217651db0

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:
11/15/2024 12:25:59 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
16.9.6.18

File size:
641.8 KB (657,184 bytes)

Product version:
1.0.6079.22535

Original file name:
ysearchservice2016082320.exe

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\Program Files\ysearchservice\updateysearchservice.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:
8/23/2016 3:31:17 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
11.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
12288:XUnCXxn9TC6Ad8gFbG+1j9SU1J7xpJjzLNy:kcCtXK+1jlJ7BzLNy

Entry address:
0xA01FE

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:
6.1679

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

Code size:
633 KB (648,192 bytes)

Service
Display name:
Update ysearchservice

Type:
Win32OwnProcess


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