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nsfa08a.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 nsfa08a.tmp by Somoto has been detected as adware by 13 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)

MD5:
936ff8e71e94139c361aee936ff4b741

SHA-1:
76167f451b783aba942789981cdc63acd7680df5

SHA-256:
00f2340bbf0d4f472ef9c04418aea87b3539d44e83685e088279211e9ac3c256

Scanner detections:
13 / 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:
12/26/2024 6:55:23 PM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
PUP/Win32.101Alemi
2014.11.21

Avira AntiVirus
APPL/Somoto.Gen2
7.11.187.220

avast!
Somoto-R [PUP]
141119-1

AVG
Generic
2015.0.3284

Baidu Antivirus
Adware.Win32.Somoto
4.0.3.141120

Dr.Web
Trojan.Packed.28357
9.0.1.05190

ESET NOD32
Win32/Somoto.G potentially unwanted application
7.0.302.0

K7 AntiVirus
Unwanted-Program
13.185.14085

Malwarebytes
PUP.Optional.Somoto.A
v2014.11.20.07

Panda Antivirus
PUP/MultiToolbar.A
14.11.20.07

Qihoo 360 Security
Win32/Virus.Downloader.192
1.0.0.1015

Reason Heuristics
PUP.Somoto.K
14.11.20.18

Sophos
Somoto BetterInstaller
4.98

File size:
279.7 KB (286,448 bytes)

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

Common path:
C:\users\{user}\appdata\local\temp\nsfa08a.tmp

Digital Signature
Signed by:
Somoto Ltd.

Authority:
Thawte, Inc.

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 8:50:46 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:Eso3G5SaGTJ72Z1IhGcH7gZCmln+Os2ZZfkyJ:M3lE+GC5mln+OXlnJ

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:
7.8926

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file nsfa08a.tmp has been seen being distributed by the following URL.

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

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