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lemurleapuntemp.exe

LemurLeap

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application lemurleapuntemp.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 is also typically executed from the user's temporary directory. While running, it connects to the Internet address install.lemurleap.info on port 80 using the HTTP protocol.
Publisher:
LemurLeap  (signed and verified)

Version:
1.0.0.0

MD5:
6a0707f7c855971d62b839b624d7fefb

SHA-1:
e73b0c02b024ed804412e77864407b040f8a837f

SHA-256:
a63b53e8893a6b3bdb12365be9acdf9471f7e39c4ba8d7183bb5319dbbc1c5ce

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:
5/14/2024 1:10:33 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.1.28.5

File size:
529.8 KB (542,496 bytes)

Product version:
1.0.0.0

Original file name:
LemurLeap Uninstaller.exe

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\temp\lemurleapuntemp.exe

Digital Signature
Signed by:
LemurLeap

Authority:
VeriSign, Inc.

Valid from:
8/13/2013 4:30:00 AM

Valid to:
8/14/2015 4:29:59 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:
7/28/2015 6:33:38 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

.NET CLR dependent:
Yes

Entry address:
0x826AE

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:
5.9643

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

Code size:
514 KB (526,336 bytes)

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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