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appstudio.exe

NSB/AppStudio

NS BASIC Corporation

The application appstudio.exe, “NSB/AppStudio Setup ” by NS BASIC has been detected as a potentially unwanted program 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 Inno Setup installer. The setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. The file has been seen being downloaded from download.informer.com.
Publisher:
NS BASIC Corporation   (signed by NS BASIC Corporation)

Product:
NSB/AppStudio

Description:
NSB/AppStudio Setup

MD5:
c6dc169d2b05ad638156aaacef3aa5e7

SHA-1:
bdd7bf6fe45adeefc1459748f6a4680f7d8ecf1b

SHA-256:
106cc678185a12ea6d87420e72eb79a88732c592349ec2f587b81cc894bb8f9e

Scanner detections:
1 / 68

Status:
Potentially unwanted

Explanation:
Uses the InstallCore download manager to install additional potentially unwanted software which may include extensions such as DealPly and various toolbars.

Analysis date:
4/29/2024 4:17:40 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.InstallCore.CSH (L)
16.12.17.14

File size:
35.8 MB (37,541,576 bytes)

Copyright:
Copyright 2016 NS BASIC Corporation

File type:
Executable application (Win32 EXE)

Installer:
Inno Setup

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\low\content.ie5\{random}\appstudio.exe

Digital Signature
Signed by:
NS BASIC Corporation

Authority:
COMODO CA Limited

Valid from:
5/8/2016 4:00:00 PM

Valid to:
5/9/2017 3:59:59 PM

Subject:
CN=NS BASIC Corporation, O=NS BASIC Corporation, STREET=71 Hill Crescent, L=Toronto, S=ON, PostalCode=M1M 1J3, C=CA

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

Serial number:
00F615F44C29C3910D0E1CE8B2827C3EA4

File PE Metadata
Compilation timestamp:
6/19/1992 2:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

Entry address:
0xA5F8

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, CE, 8A, FF, FF, E8, D5, 9C, FF, FF, E8, 64, 9F, FF, FF, E8, 07, A0, FF, FF, E8, A6, BF, FF, FF, E8, 11, E9, FF, FF, E8, 78, EA, FF, FF, 33, C0, 55, 68, C9, AC, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 92, AC, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 26, F5, FF, FF, E8, 11, F1, FF, FF, 80, 3D, 34, B2, 40, 00, 00, 74, 0C, E8, 23, F6, FF, FF, 33, C0, E8, C4, 97, FF, FF, 8D, 55, F0, 33, C0, E8, B6, C5, FF, FF, 8B, 55...
 
[+]

Entropy:
8.0000

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
39.5 KB (40,448 bytes)

The file appstudio.exe has been seen being distributed by the following URL.

http://download.informer.com/.../appstudio.exe

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