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firefox_setup.exe

Application

Download Stream

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application firefox_setup.exe, “Application Setup ” by Download Stream 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. With this installer, users are expecting to download the free Mozilla Firefox web browser but before that occurs they may be presented with additional offers, mostly potentially unwanted software or adware.
Publisher:
Installer   (signed by Download Stream)

Product:
Application

Description:
Application Setup

MD5:
13a8a068f258e9382397275df2542bcd

SHA-1:
9d0f5b0a35a739ed36be0e7beaa4b77c7cc56cad

SHA-256:
bacda9a1bd9bbdeb341f0981fd44320fe7b645b257bb2fa036b15c1545eafc62

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 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 5:28:07 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore (M)
16.11.4.15

File size:
775.1 KB (793,720 bytes)

Product version:
5.1

Copyright:
Generic

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\microsoft\windows\inetcache\ie\{random}\firefox_setup.exe

Digital Signature
Signed by:
Download Stream

Authority:
COMODO CA Limited

Valid from:
2/26/2015 7:00:00 PM

Valid to:
2/26/2017 6:59:59 PM

Subject:
CN=Download Stream, O=Download Stream, STREET="1930 Village Center Circle #3-1234", L=Las Vegas, S=NV, PostalCode=89134, C=US

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

Serial number:
6F743ED7A3F6BE2849D3B5B7D2D51E3A

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):
24576:4+diEOyQNgrvMKdM1bjr2xqjABc6EGOiHMRO7bR:4BRyBv0mS6E4MROJ

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:
7.8771

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

Code size:
39.5 KB (40,448 bytes)

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

http://cdn.downloadzonefiles.org/c?x=hjOP0mfW6sGDJ675RYjMy6KMOXicXtKOBrH8YrGHNp4=&c=yINRigDAp35xZd3liRQclTitJzJOOlYsSVcVdtlsUFG2qezCkG8e78tHn9FoA8Uxi4doP71FcXjsnfOpqois1zS2Qr aS1bwQ Cr8D QqFsr7wfzt1vJxXXkIvHt/C1O&fallback_url=http://download-installer.cdn.mozilla.net/pub/firefox/releases/34.0.5/win32/.../Firefox Setup Stub 34.0.5.exe&downloadAs=Firefox_Setup.exe

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