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ysearchserviceun.exe

Alactro LLC

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application ysearchserviceun.exe by Alactro has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is the uninstaller utility registered in the Windows Control Panel for the program ysearchservice by ysearchservice.
Publisher:
Alactro LLC  (signed and verified)

Version:
1.0.0.0

MD5:
9983a8f856e2bf8f3652e2d92baf2590

SHA-1:
1e3b487b1db5e6a6e710e8dcfa24de038d24f1c4

SHA-256:
b34ae0de119f13629818c818115c4f889450158767005cec1c05a13e185b44ce

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 12:35:17 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
16.9.19.7

File size:
742.3 KB (760,096 bytes)

Product version:
1.0.0.0

Original file name:
ysearchservice Uninstaller.exe

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\Program Files\ysearchservice\ysearchserviceun.exe

Digital Signature
Signed by:
Alactro LLC

Authority:
VeriSign, Inc.

Valid from:
6/24/2013 8:00:00 PM

Valid to:
8/23/2016 7:59:59 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:
5/2/2016 3:44:18 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
12288:d83ZW51Z2wV0VdtvBQ5H64YUf4ZQr59WJP:0VehY24ZQr59WJP

Entry address:
0xB794E

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:
6.3661

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

Code size:
726.5 KB (743,936 bytes)

Program Uninstaller
Program name:
ysearchservice

Display publisher:
ysearchservice

Display version:
2015.05.14.162350

Uninstall string:
C:\Program Files (x86)\ysearchservice\ysearchserviceUn.exe OFS_


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