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bi_stub.exe

BI Stub

Somoto Ltd.

Somoto uses a monetization platform known as the 'Better Installer' to provide the ability of 3rd party developers to bundle various adware packages through an affiliate pay-per-install program. The application bi_stub.exe, “Powered by BetterInstaller” by Somoto has been detected as adware by 9 anti-malware scanners. The program is a setup application that uses the Somoto BetterInstaller installer. Includes the Somoto BetterInstaller, an adware installer that will bundle offers for additional third party applications, mostly adware toolbars, with legitimate softare and may be installed without adequate user consent.
Publisher:
Somoto Ltd.  (signed and verified)

Product:
BI Stub

Description:
Powered by BetterInstaller

Version:
1.0.0.0

MD5:
535204696a58499b95f8b00dcea58133

SHA-1:
452d3e67f41db7dcb30ded07f89b5861ad835397

SHA-256:
37f7488475b0c37da0f2fcef13e058bca465cc4e89a4a405a5f4dd5966ed77fc

Scanner detections:
9 / 68

Status:
Adware

Explanation:
Uses the Somoto 'BetterInstaller' to bundle additional (unwanted) software during install without adequate consent.

Description:
This is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
5/26/2024 7:25:12 AM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
APPL/Somoto.boa
7.11.137.220

avast!
Win32:Somoto-J [PUP]
2014.9-140506

Dr.Web
Adware.Somoto.16
9.0.1.0126

Malwarebytes
PUP.Optional.Somoto
v2014.05.06.08

McAfee
Artemis!535204696A58
5600.7139

Panda Antivirus
PUP/MultiToolbar.A
14.05.06.08

Reason Heuristics
PUP.BetterInstaller.Somoto.H
14.8.7.17

Sophos
Somoto BetterInstaller
4.98

VIPRE Antivirus
BetterInstaller
27520

File size:
49.1 KB (50,280 bytes)

Product version:
1.0.0

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Somoto BetterInstaller (using Nullsoft Install System)

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

Digital Signature
Signed by:
Somoto Ltd.

Authority:
COMODO CA Limited

Valid from:
9/20/2011 3:00:00 AM

Valid to:
9/20/2014 2:59:59 AM

Subject:
CN=Somoto Ltd., O=Somoto Ltd., STREET=PO Box 58096, L=Tel Aviv, S=--, PostalCode=61580, C=IL

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00841D099D16B738F34172FEEFE1D2574F

File PE Metadata
Compilation timestamp:
12/6/2009 1:50:46 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
768:i1cVhpQI2EQK0iPDh84nScF15GYbWjXO3XJ/TL9leCqg5xhc:AQpQ5EP0ijnRTXJ/TL9leCvhc

Entry address:
0x323C

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 30, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 58, 3F, 42, 00, E8, 09, 2C, 00, 00, A3, A4, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 58, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, B8, 91, 40, 00, 68, A0, 36, 42, 00, E8, BC, 28, 00, 00, FF, 15, B0, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, AA, 28, 00, 00...
 
[+]

Entropy:
7.0251

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

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

http://d1p2zvpeuweyai.cloudfront.net/sdk/.../bi_stub.exe

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