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nst2bfd.tmp

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 file nst2bfd.tmp by Somoto has been detected as adware by 14 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)

Version:
1.0.0.1

MD5:
b492d30b6b3110ab2f7441fc992edebc

SHA-1:
ae6df69d254bace37523bc19bfa7b0560ec346cd

SHA-256:
3f590e8d3d2bac4e77f682cf8b7ec2ed9e19adca6cc592314b6e301dc15b5f49

Scanner detections:
14 / 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:
5/18/2024 4:39:12 AM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
Win-PUP/Somoto
2015.01.06

avast!
Somoto-R [PUP]
150101-1

AVG
Generic
2016.0.3238

Baidu Antivirus
Adware.Win32.Somoto
4.0.3.1516

Bkav FE
W32.HfsAdware
1.3.0.6267

Dr.Web
Trojan.Packed.28357
9.0.1.05190

ESET NOD32
Win32/Somoto.G potentially unwanted application
7.0.302.0

Kaspersky
not-a-virus:Downloader.Win32.Agent
15.0.0.543

Malwarebytes
PUP.Optional.Somoto
v2015.01.06.06

Panda Antivirus
PUP/MultiToolbar.A
15.01.06.06

Qihoo 360 Security
Win32/Virus.Downloader.192
1.0.0.1015

Reason Heuristics
PUP.Somoto.K
15.1.6.6

Sophos
PUA 'Somoto BetterInstaller'
5.09

VIPRE Antivirus
Threat.4150696
36340

File size:
420.4 KB (430,504 bytes)

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

Common path:
C:\users\{user}\appdata\local\temp\nst2bfd.tmp

Digital Signature
Signed by:
Somoto Ltd.

Authority:
Thawte, Inc.

Valid from:
7/2/2014 8:00:00 AM

Valid to:
7/3/2015 7:59:59 AM

Subject:
CN=Somoto Ltd., O=Somoto Ltd., L=Tel Aviv, S=Israel, C=IL

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
6A0C39D0252522A9C448352858ACAACB

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

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:GFsEILOnP/80+ST5jrZdPRYWHZjRfGcjW2BHzrYhe806h9:GF1IcPE0pFHvTbGcVBHgAq

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:
7.9408

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file nst2bfd.tmp has been seen being distributed by the following URL.

http://sub.abantsk.info/installers/bi_downloader/.../setup.exe

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