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nstba71.tmp

Site on Spot Limited

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 nstba71.tmp by Site on Spot Limited 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.auracean.com.
Publisher:
Site on Spot Limited  (signed and verified)

Version:
1.0.0.1

MD5:
6b49273c7ed6fc6c768ea4751d4b362d

SHA-1:
9a225752726b89a62fd0aa7b5e5c6aa50fd1edad

SHA-256:
e32b5b201a048e2217f5d80333caafd8a3225d7363cd787c59e909d5a8d0f82e

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 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
5/3/2024 11:19:59 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Somoto.SiteonSpot.Bundler (M)
16.2.11.0

File size:
422.2 KB (432,352 bytes)

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

Common path:
C:\users\{user}\appdata\local\temp\nstba71.tmp

Digital Signature
Signed by:
Site on Spot Limited

Authority:
COMODO CA Limited

Valid from:
7/27/2014 5:00:00 PM

Valid to:
7/28/2015 4:59:59 PM

Subject:
CN=Site on Spot Limited, O=Site on Spot Limited, STREET=5 Daniel Samburski Street, L=Tel Aviv, S=Israel, PostalCode=69584, C=IL

Issuer:
CN=COMODO RSA Code Signing CA, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00D6B33C3BD9AFC239524BC60DB819F561

File PE Metadata
Compilation timestamp:
12/5/2009 3:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:IsxF4GAINb6EJLmEGM1JcOJ5zIihWJjZKob8U4Be1d3a/WxleVScsm:BF4GAOJLmTwhEtQobp4Bmoux4VSG

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:
7.9411

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file nstba71.tmp has been seen being distributed by the following URL.

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

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