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utillemurleap.exe

LemurLeap

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application utillemurleap.exe by LemurLeap 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 “Util LemurLeap”. While running, it connects to the Internet address install.lemurleap.info on port 80 using the HTTP protocol.
Publisher:
LemurLeap  (signed and verified)

Version:
1.0.5142.20701

MD5:
9d3e2d9852ee40325ba9a0e51ef0b005

SHA-1:
5caa9c235c80fee58eb4f4be41290e4582c28b91

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:
5/13/2024 8:35:46 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.2.21.18

File size:
99.8 KB (102,176 bytes)

Product version:
1.0.5142.20701

Original file name:
LemurLeap.exe

File type:
Executable application (Win32 EXE)

Digital Signature
Signed by:
LemurLeap

Authority:
VeriSign, Inc.

Valid from:
8/13/2013 1:00:00 AM

Valid to:
8/14/2015 12:59:59 AM

Subject:
CN=LemurLeap, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=LemurLeap, L=San Diego, S=California, 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:
59846B2F05AAAD396A7E942BF33F16B3

File PE Metadata
Compilation timestamp:
1/29/2014 11:30:20 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
8.0

.NET CLR dependent:
Yes

Entry address:
0x18BCA

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, 02, 00, 10, 00, 00, 00, 20, 00, 00, 80, 18, 00, 00, 00, D8, 02, 00, 80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 01, 00, 01, 00, 00, 00, 38, 00, 00, 80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 01, 00, 00, 00...
 
[+]

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

Code size:
91 KB (93,184 bytes)

Service
Display name:
Util LemurLeap

Type:
Win32OwnProcess


The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to wpc.0952.edgecastcdn.net  (68.232.34.163:80)

TCP (HTTP):
Connects to install.lemurleap.info  (70.186.131.186:80)

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