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icreinstall_firefox_setup.exe

The installer utilizes InstallCore which may bundle about 3-4 offers for various ad-supported toolbars, extensions and utilities. The application icreinstall_firefox_setup.exe 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. The installer is marketed through download protals and search ads as the free Mozilla Firefox web browser but will also install additional software offers which include adware, PUPs and browser toolbars.
MD5:
21964ab2fd0333ec02ef7ae99f84d083

SHA-1:
a36ad9542bed3f7f3c12fb515dc4cb5a2f9c5808

SHA-256:
984760292e03de3d8811cc4279071d250e699a554347a8e9499fe561b3ebe9ac

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 an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
4/19/2024 5:49:54 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.InstallCore.Installer (M)
15.10.26.1

File size:
663.8 KB (679,728 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

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

File PE Metadata
Compilation timestamp:
6/19/1992 5:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:PgMJfsG6eryY0SvFVGuHmjNPNK4PDBSp1ktIJA8LE1e3bOw9z3K:PgMJfs3er/BT2K4PCSIq8w83qwg

Entry address:
0x98CC

Entry point:
55, 8B, EC, 83, C4, CC, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, FA, 97, FF, FF, E8, 01, AA, FF, FF, E8, 2C, CC, FF, FF, E8, 73, CC, FF, FF, E8, 0A, F3, FF, FF, E8, 71, F4, FF, FF, 33, C0, 55, 68, 76, 9F, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 2C, 9F, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, B0, 40, 00, E8, 9B, FE, FF, FF, E8, 26, FA, FF, FF, 8D, 55, F0, 33, C0, E8, E0, D0, FF, FF, 8B, 55, F0, B8, D8, BD, 40, 00, E8, AB, 98, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, D8, BD, 40, 00, B2, 01, B8...
 
[+]

Entropy:
7.8280

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

Code size:
36 KB (36,864 bytes)

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

http://downloader.ez-download.com/download.php?id=65c0fee9d122da246a8b965859994a415da86b32&z=0&p=eyJweSI6ImV6IiwicnMiOiJiaW5nIiwicnQiOiJzZWFyY2giLCJjIjoidXMiLCJvIjoid2ludiIsImIiOiJjaDMwIiwidV9pZCI6ImV6XzUyNTE5MGFjYTljMTY4LjA4MzcwNTQ0IiwicGFfaWQiOiIwIiwic3RfaWQiOiIwIiwic3BfaWQiOiIwMDA0LTAwMDAiLCJ0cyI6MTM4MTA3NzE2NCwia3ciOiJmaXJlZm94IGRvd25sb2FkIiwiY3UiOiJmaXJlZm94IGRvd25sb2FkIiwiY2EiOm51bGx9

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)

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