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nsyf4c1.tmp

SITE ON SPOT Ltd.

This is the Somoto BetterInstaller, an installer that bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed without consent. The file nsyf4c1.tmp by SITE ON SPOT has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the Somoto BetterInstaller installer. It is also typically executed from the user's temporary directory. The file has been seen being downloaded from sub.spirlymo.com.
Publisher:
SITE ON SPOT Ltd.  (signed and verified)

Version:
1.0.0.1

MD5:
bd0a5ee76d80220cb30329f71cc7d4ae

SHA-1:
dc4f39be26aa84d0424d70dd1abbc2828ea746ed

SHA-256:
56d89965655b36c1bbe18b0edbfbeb2780ed5d7880ef15f24a8a5e9eb244fbfa

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

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:
4/19/2024 7:40:45 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Somoto.SITEONSPOT.Bundler (M)
15.10.1.5

File size:
420.2 KB (430,312 bytes)

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

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\temp\nsyf4c1.tmp

Digital Signature
Signed by:
SITE ON SPOT Ltd.

Authority:
Thawte, Inc.

Valid from:
6/28/2013 4:00:00 AM

Valid to:
6/29/2015 3:59:59 AM

Subject:
CN=SITE ON SPOT Ltd., O=SITE ON SPOT Ltd., L=Tel Aviv, S=NA, C=IL

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

Serial number:
3EE11B140A803DE260823157A875B8C5

File PE Metadata
Compilation timestamp:
12/6/2009 2:50:46 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:hFCxh6OHErdfIWTBHrzyRDqz582KZBdeK2v:hFMhGZBZy52KfdXY

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:
7.9413

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file nsyf4c1.tmp has been seen being distributed by the following URL.

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

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