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nskb3f5.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 nskb3f5.tmp by Somoto has been detected as adware by 18 anti-malware scanners. The program is a setup application that uses the Somoto BetterInstaller installer. According to AVG, this software downloads additional adware offers during setup. It is also typically executed from the user's temporary directory. The file has been seen being downloaded from sub.steshik.info.
Publisher:
Somoto Ltd.  (signed and verified)

Version:
1.0.0.1

MD5:
850c7ec810bb855e10012a5a96e8ee61

SHA-1:
5ff3ee0373a5d220531e8a8cc5f7c07959761ad5

SHA-256:
84524a6bf642e5e04131470518bea7ec37d658d110b4fc27568dad8ea17a0e4e

Scanner detections:
18 / 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:
12/5/2024 1:38:43 AM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
Win-PUP/Somoto
2015.01.28

avast!
Win32:Somoto-R [PUP]
2014.9-150815

AVG
Downloader
2016.0.3016

Baidu Antivirus
Adware.Win32.Somoto
4.0.3.15815

Bkav FE
W32.HfsAdware
1.3.0.6379

Comodo Security
Application.Win32.Somoto.GDP
20870

Dr.Web
Trojan.Packed.28357
9.0.1.0227

ESET NOD32
Win32/Somoto
9.11084

K7 AntiVirus
Unwanted-Program
13.192.14775

Kaspersky
not-a-virus:Downloader.Win32.Agent
14.0.0.1575

Malwarebytes
PUP.Optional.Somoto
v2015.08.15.10

McAfee
Artemis!850C7EC810BB
5600.6672

Panda Antivirus
PUP/MultiToolbar.A
15.08.15.10

Qihoo 360 Security
Win32/Virus.Downloader.192
1.0.0.1015

Reason Heuristics
PUP.Somoto.Bundler (M)
15.8.15.22

Sophos
Somoto BetterInstaller
4.98

Trend Micro House Call
TROJ_GEN.R047H07AF15
7.2.227

VIPRE Antivirus
Trojan.Win32.Generic
37030

File size:
420.4 KB (430,536 bytes)

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

Common path:
C:\users\{user}\appdata\local\temp\nskb3f5.tmp

Digital Signature
Signed by:
Somoto Ltd.

Authority:
Thawte, Inc.

Valid from:
7/1/2014 9:00:00 PM

Valid to:
7/2/2015 8:59:59 PM

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:
12/5/2009 7:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:mFndUepOBpvjzArQfeuDdZXztn8Pz78kJU0:mFnOeEz7MrQmuZZXzd8PzYm

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...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file nskb3f5.tmp has been seen being distributed by the following URL.

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

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