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firefox_setup.exe

Firefox 2015: Foxstart Edition

Download Assistant

This is part of the Air Installer, a download manager which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed with minimal consent. The application firefox_setup.exe by Download Assistant 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 AirInstaller Download Manager 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:
Download Assistant  (signed and verified)

Product:
Firefox 2015: Foxstart Edition

Version:
3.0.0.133

MD5:
b52954ae4e38cac69e9d4d6527abf610

SHA-1:
8d6ec7560355e8b56e55bf68b736d13c88880aeb

SHA-256:
cff702e6d191113b522bd71d858869a2e3efea0dcc64a334828bb518781d3312

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:
11/24/2024 8:51:09 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.Download.Bundler (M)
16.6.24.9

File size:
1.1 MB (1,139,592 bytes)

Product version:
3.0.0.133

Copyright:
(c) Download Assistant

File type:
Executable application (Win32 EXE)

Bundler/Installer:
AirInstaller Download Manager

Language:
Language Neutral

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

Digital Signature
Signed by:
Download Assistant

Authority:
Symantec Corporation

Valid from:
10/26/2015 2:00:00 AM

Valid to:
10/26/2016 2:59:59 AM

Subject:
CN=Download Assistant, O=Download Assistant, L=Victoria, S=British Columbia, C=CA

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
2A1D11E01BC0F867CA2D021506280DBF

File PE Metadata
Compilation timestamp:
1/30/2013 4:21:56 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:gxG7EhmUt7bGT+F1G4t5FEvs74XkuPuoTClb/fd:l4hT7bn7EkMrTeb/fd

Entry address:
0x113BC

Entry point:
55, 8B, EC, 83, C4, A4, 53, 56, 57, 33, C0, 89, 45, C4, 89, 45, C0, 89, 45, A4, 89, 45, D0, 89, 45, C8, 89, 45, CC, 89, 45, D4, 89, 45, D8, 89, 45, EC, B8, 2C, 00, 41, 00, E8, E8, 51, FF, FF, 33, C0, 55, 68, 9E, 1A, 41, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 5A, 1A, 41, 00, 64, FF, 32, 64, 89, 22, A1, 48, 5B, 41, 00, E8, 16, D8, FF, FF, E8, 65, D3, FF, FF, 80, 3D, DC, 2A, 41, 00, 00, 74, 0C, E8, 2B, D9, FF, FF, 33, C0, E8, 80, 32, FF, FF, 8D, 55, EC, 33, C0, E8, E2, A3, FF, FF, 8B, 55, EC, B8, 50, 86...
 
[+]

Entropy:
6.9621

Developed / compiled with:
Microsoft Visual C++

Code size:
65.5 KB (67,072 bytes)

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

http://files.uk-download.net/v2/click/piyjs3im/?d=http://dl.uk-download.com/files/firefoxinstall_en_uk_zr.exe&key=4985607d86f94d849b49510e1d87aa921d582f449e5cd6ebb01396c449e784f4&sid=mozilla_firefox_-_1&uid=UKDLCID565de3448f5d5&affiliate_image=&product_image=http://dl.uk-download.com/graphics/product_image_newest_fs.png&n=Firefox 2015: Foxstart Edition&filename=firefox_setup&done_url=http://uk-download.com/.../&cancel_url=http://uk-download.com/.../?error=1

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