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nsf3755.tmp

Somoto Ltd

The file nsf3755.tmp by Somoto has been detected as a potentially unwanted program by 27 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) 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. The file has been seen being downloaded from sub.spirlymo.com.
Publisher:
Somoto Ltd  (signed and verified)

Version:
1.0.0.1

MD5:
9dec154012be1af115e98d471628576b

SHA-1:
0a823fc87666d0f2a4b7287e4f83c5219ec84186

SHA-256:
3d0fc5d7653d5b2569c24fdc80dfe41ea4c42fac1135f38fdf285696a03ca1a7

Scanner detections:
27 / 68

Status:
Potentially unwanted

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

Analysis date:
4/23/2024 6:25:35 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Application.Bundler.Somoto.AG
435

AhnLab V3 Security
PUP/Win32.Somoto
2015.11.27

Avira AntiVirus
PUA/Somoto.Gen2
8.3.2.4

Arcabit
Application.Bundler.Somoto.AG
1.0.0.624

AVG
AdLoad.S
2016.0.2913

Baidu Antivirus
Adware.Win32.Somoto
4.0.3.151126

Bitdefender
Application.Bundler.Somoto.AG
1.0.20.1650

Bkav FE
W32.HfsAdware
1.3.0.7383

Clam AntiVirus
Win.Adware.Somoto-2
0.98/21511

Comodo Security
Application.Win32.Somoto.GH
23662

Dr.Web
Adware.Somoto.139
9.0.1.0330

ESET NOD32
Win32/Somoto.G potentially unwanted
9.12629

F-Prot
W32/Trojan2.OUSK
v6.4.7.1.166

F-Secure
Application.Bundler.Somoto
11.2015-26-11_5

IKARUS anti.virus
PUA.Somoto
t3scan.1.9.5.0

K7 AntiVirus
Unwanted-Program
13.212.17982

Kaspersky
not-a-virus:Downloader.Win32.Somato
14.0.0.1061

Malwarebytes
PUP.Optional.Somoto
v2015.11.26.08

MicroWorld eScan
Application.Bundler.Somoto.AG
16.0.0.990

NANO AntiVirus
Riskware.Nsis.Adware.dshbbp
0.30.26.4751

Qihoo 360 Security
Win32/Virus.Downloader.9c9
1.0.0.1077

Reason Heuristics
PUP.Somoto.Installer (M)
15.11.26.20

Sophos
Somoto BetterInstaller (PUA)
4.98

SUPERAntiSpyware
PUP.Somoto/Variant
9483

Trend Micro House Call
ADW_TOMOS.SMN
7.2.330

Trend Micro
ADW_TOMOS.SMN
10.465.26

VIPRE Antivirus
Trojan.Win32.Generic
45444

File size:
420.8 KB (430,904 bytes)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\nsf3755.tmp

Digital Signature
Signed by:
Somoto Ltd

Authority:
Symantec Corporation

Valid from:
6/24/2015 2:00:00 AM

Valid to:
8/23/2016 1:59:59 AM

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

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
02FED381427052F6E66365A4627FB0ED

File PE Metadata
Compilation timestamp:
12/5/2009 11:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:TF25eKHyO0MPUJuoxN/Gt55H720qV3ZU5jlqJx:TF6eW008q6/WJqJx

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 nsf3755.tmp has been seen being distributed by the following URL.

http://sub.spirlymo.com/installers/bi_downloader/.../setup.exe

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