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tlglkynta.exe

Web Shield

Irrational Number Applications

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application tlglkynta.exe, “WebShield Service” by Irrational Number Applications 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 “tLgLkyNta”.
Publisher:
Irrational Number Applications  (signed and verified)

Product:
Web Shield

Description:
WebShield Service

Version:
1.0.0.0

MD5:
7bfd0bc725d099394748f5fbd0eb7468

SHA-1:
aff0d5e3bf5a16e25c8da307055d8831097e2509

SHA-256:
f1da53294e3cd3ef36d3c0e48b4f34d9a11ae63b71c3f6c8c39442dfbf983f1f

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:
1/11/2025 9:34:16 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.10.14

File size:
2.9 MB (3,000,824 bytes)

Product version:
1.0.0.0

Copyright:
Copyright © Irrational Number Applications 2015

Original file name:
WebShieldService.exe

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\ProgramData\vlutrlabeab\tlglkynta.exe

Digital Signature
Signed by:
Irrational Number Applications

Authority:
Symantec Corporation

Valid from:
1/20/2015 5:45:00 AM

Valid to:
3/21/2016 5:44:59 AM

Subject:
CN=Irrational Number Applications, O=Irrational Number Applications, L=St. James, S=St. James, C=BB

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
637F0A74512CF65B05B3A5A0241D6624

File PE Metadata
Compilation timestamp:
11/28/2015 8:28:33 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

.NET CLR dependent:
Yes

Entry address:
0x2DC44E

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...
 
[+]

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

Code size:
2.9 MB (2,991,616 bytes)

Service
Display name:
tLgLkyNta

Type:
Win32OwnProcess

Depends on:
Winmgmt CryptSvc


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