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setup.exe

LemurLeap

This is the installer and setup program from the LemurLeap branded Yontoo adware web browser extension. This adware injects various forms of advertisements in the user's web browser based on the HTML content and URLs viewed. Ad include banners, in-line context text links, coupons, and search. The program will install an auto-updating background service that will update the software with additional features. The application setup.exe by LemurLeap has been detected as adware by 8 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages.
Publisher:
LemurLeap  (signed and verified)

MD5:
fb87c703b9138dbd6596b25a4ce62131

SHA-1:
85b8a8dc103c914bfe4c49924e3c7762074afa86

SHA-256:
1eb1fbf00a131fa20eb226e980027e99f3b1e2667759dd3392dbeee0ec941627

Scanner detections:
8 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
4/19/2024 5:32:08 PM UTC  (today)

Scan engine
Detection
Engine version

Dr.Web
Adware.Plugin.100
9.0.1.0357

ESET NOD32
Win32/BrowseFox
7.8944

Malwarebytes
PUP.Optional.LemurLeap.A
v2013.12.23.01

McAfee
Artemis!FB87C703B913
5600.7272

Reason Heuristics
PUP.Installer.LemurLeap.F
14.8.7.21

Sophos
LemurLeap
4.93

Trend Micro House Call
TROJ_GEN.F47V0904
7.2.357

VIPRE Antivirus
Yontoo
22594

File size:
765.3 KB (783,688 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\setup.exe

Digital Signature
Signed by:
LemurLeap

Authority:
VeriSign, Inc.

Valid from:
8/13/2013 3:00:00 AM

Valid to:
8/14/2015 2:59:59 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:
12/6/2009 1:50:41 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:YVsSdcHq/G/8JEDk5Lhew9GumfYwR+Q++/v1HsBWfDF9m4/xSdcHq/G/8i:Yu8AAhDRiYwR+Q+ss8FEY8i

Entry address:
0x30CB

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 38, 3F, 42, 00, E8, F1, 2B, 00, 00, A3, 84, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 30, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 80, 36, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9863

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

The file setup.exe has been seen being distributed by the following URL.

http://wpc.0952.edgecastcdn.net/800952/.../setup.exe

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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