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lmrunobyw.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 lmrunobyw.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 “lMrUNObYW”.
Publisher:
Irrational Number Applications  (signed and verified)

Product:
Web Shield

Description:
WebShield Service

Version:
1.0.0.0

MD5:
853e629612591d10719eb94b8f56d187

SHA-1:
53685cd63526854b0dae74fab36600936eda2bf6

SHA-256:
7a88ac56ac1313242559f4229183b65af285fdf3793a36c0fc4b489a02e3fa30

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:
12/24/2024 4:49:56 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.6.6

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)

Common path:
C:\ProgramData\jtdgfcuek\lmrunobyw.exe

Digital Signature
Signed by:
Irrational Number Applications

Authority:
Symantec Corporation

Valid from:
1/19/2015 9:00:00 PM

Valid to:
3/20/2016 8:59:59 PM

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:
9/28/2015 10:42:05 PM

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:
lMrUNObYW

Type:
Win32OwnProcess

Depends on:
Winmgmt CryptSvc


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