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icreinstall_z-zipsetup.exe

Nuca

The installer utilizes InstallCore which may bundle about 3-4 offers for various ad-supported toolbars, extensions and utilities. The application icreinstall_z-zipsetup.exe, “Nuca Setup ” 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, however the file is not signed with an authenticode signature from a trusted source. The setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions.
Product:
Nuca

Description:
Nuca Setup

Version:
2.4.3.5

MD5:
2e096ad53a7a8cbc91141ee253db9794

SHA-1:
d10a5f3fa1c657b8c6221981c224581e88dfb478

Scanner detections:
1 / 68

Status:
Adware

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

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:
12/26/2024 5:35:43 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.InstallCore.RE.Installer (M)
16.4.14.20

File size:
924.9 KB (947,139 bytes)

Product version:
3.1.8

Copyright:
Web lite

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

Common path:
C:\Documents and Settings\{user}\Local settings\temp\icreinstall_z-zipsetup.exe

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

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:qodzxDXLD0WJPemPbNQR0CPdJsFBD0K2QtR:qKtBWm1TpxR

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:
7.9344

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

Code size:
39.5 KB (40,448 bytes)

The file icreinstall_z-zipsetup.exe has been seen being distributed by the following 2 URLs.

http://www.buildworldfiles.com/c?x=tPcY7TBv8YTz5 RO/MCq35dvBvYA6TuovfGMng0pR/g=&c=T9ALhDP4nhB5qgToQbM/qTkGUmXf4fTUFoGZn2saIx/PJ Mb7QyP5OKk4wrqzWNXBm9qRNj4idhyxS2XYSHyF6CpFVpFoonUtr/Npeet2MCBPa4RoPrnYg4ZOUWgw9w8&downloadAs=Z-ZipSetup.exe&fallback_url=http://staticrr.z-zip.net/sdb/.../Z-ZipSetup.exe

http://www.buildworldfiles.com/c?x=GbjYXQADTKLAXyGxPY/ y8 YbKTmVWu6CeEswcngPzk=&c=KFltmN8J4oPrUgAYQWUkHyBq84Y1onB6FZdHJU1f5I2sSUxDHGrcB7H0chajpjGpmLFlLS9dqSE8ryi o2HMY/apSeh0y074I6nfYbwpY2b/jbFjNCl1THKvpNk7jJKs&downloadAs=Z-ZipSetup.exe&fallback_url=http://staticrr.z-zip.net/sdb/.../Z-ZipSetup.exe

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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