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icreinstall_vdownloader_setup.exe

Catuhacun

Setup Alpha ((New Media Holdings Ltd)

The installer utilizes InstallCore which may bundle about 3-4 offers for various ad-supported toolbars, extensions and utilities. The application icreinstall_vdownloader_setup.exe, “Catuhacun Setup ” by Setup Alpha ((New Media Holdings) 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 installCore installer. It is also typically executed from the user's temporary directory. The file has been seen being downloaded from www.vaultbytehead.com and multiple other hosts. While running, it connects to the Internet address os.solvefile.com on port 80 using the HTTP protocol.
Publisher:
Setup Alpha ((New Media Holdings Ltd)  (signed and verified)

Product:
Catuhacun

Description:
Catuhacun Setup

Version:
4.7.1.5

MD5:
4860d10470ce31edda62c1fab88e8bae

SHA-1:
c35d4e497d1be3451959aa6c859d6a416897d978

SHA-256:
a6ef2a8ff5eb05fb3c181b254cc927336a826bd630fbb4eebac8fd5d561d3c3a

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Utilizes the InstallCore download manager that may bundle various adware-type offers.

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:
5/17/2024 4:11:21 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.NewMedia.NMH.Bundler (M)
16.5.23.1

File size:
1.3 MB (1,344,856 bytes)

Product version:
3.6

Copyright:
Wizard Lite Stub

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\temp\icreinstall_vdownloader_setup.exe

Digital Signature
Signed by:
Setup Alpha ((New Media Holdings Ltd)

Authority:
GlobalSign nv-sa

Valid from:
12/17/2015 11:41:44 AM

Valid to:
5/25/2016 8:42:13 AM

Subject:
CN=Setup Alpha ((New Media Holdings Ltd), O=Setup Alpha ((New Media Holdings Ltd), L=Tel Aviv, C=IL

Issuer:
CN=GlobalSign CodeSigning CA - SHA256 - G2, O=GlobalSign nv-sa, C=BE

Serial number:
11216F55CB04783E0F0E5AC4C45115E1BCCC

File PE Metadata
Compilation timestamp:
6/19/1992 7:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:7d0glPmINSKRkXb/2JKqTnWb875uqzslsBc2qPx0hOtNj0Rpv:7qcRkXFqTWbmuq5BclHN6pv

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, 53, C9, FF, FF, E8, 9A, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

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

Code size:
37 KB (37,888 bytes)

The file icreinstall_vdownloader_setup.exe has been seen being distributed by the following 2 URLs.

http://www.vaultbytehead.com/c?x=kqWpOiyraz51SOQ39gkpNGHlanM1MJ7dticRhSiPk U=&c=JVeCh58SlUuDXTd/mQprWlE fvbPzb8RciypirEZFd9ZwzPXOgsfYKDYEphiuoal6TzCclm7md8n2nr3QXru8SMLAr8OOpR lpgEXzgS5kB8OfdTtIljkBvgQV4P1/O8&downloadAs=VDownloader_Setup.exe&fallback_url=http://.../?p=plus

http://www.vaultbytehead.com/c?x=T75hjU49SCvYj2IU BmBGckJQPy1L1wzrn72nv3wIBA=&c=0KBnNiJWmGEzlvozwAbOHyHBqqG5ygUQrgeO9xMgN86Ffv3cG s3UkoAKfeY e63D3sGgDIFQXXIFfiEEwEJkInHnMi9uBApnBjDSuJuehL2vDeJNDC1h/oPTNun /lp&downloadAs=VDownloader_Setup.exe&fallback_url=http://.../?p=plus

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to os.solvefile.com  (207.189.109.121:80)

TCP (HTTP):
Connects to cdnus.solvefile.com  (207.189.109.121:80)

TCP (HTTP):
Connects to cdneu.webfilescdn.com  (65.254.40.36:80)

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