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Firefox_Setup_26.0.exe

Mozilla FireFox

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_26.0.exe by Download Assistant has been detected as adware by 9 anti-malware scanners. 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:
DownloadAsst_New  (signed by Download Assistant)

Product:
Mozilla FireFox

Version:
3.0.0.91

MD5:
5385e5a1190d123e7f9f03234ce8c117

SHA-1:
e1ae687931ab2fc2fe6634d8d3415481c54982d8

SHA-256:
41871dc0b0b746190257e9d5268a3454a0e806f4900901177a86ad188cee10eb

Scanner detections:
9 / 68

Status:
Adware

Explanation:
Bundles additional software, mostly toolbars and other potentially unwanted applications using the Vittalia monitization installer.

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:
8/4/2025 9:44:18 AM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:Adware-CKC [PUP]
150319-1

Bkav FE
W32.HfsAdware
1.3.0.6379

Comodo Security
Application.Win32.DownloadAssistant.S
21753

Dr.Web
Trojan.Vittalia.30
9.0.1.05190

ESET NOD32
Win32/DownloadAssistant.A potentially unwanted application
7.0.302.0

NANO AntiVirus
Trojan.Win32.Vittalia.dqfrig
0.30.10.952

Reason Heuristics
PUP.Bundler.Air Software
15.4.13.11

Rising Antivirus
PE:Malware.XPACK-HIE/Heur!1.9C48
23.00.65.15411

VIPRE Antivirus
Threat.4782985
38882

File size:
957.7 KB (980,656 bytes)

Product version:
3.0.0.91

Copyright:
(c) DownloadAsst_New

Original file name:
Firefox_Setup_26.0.exe

File type:
Executable application (Win32 EXE)

Bundler/Installer:
AirInstaller Download Manager

Language:
English (United States)

Common path:
C:\users\{user}\downloads\firefox_setup_26.0.exe

Digital Signature
Signed by:
Download Assistant

Authority:
Symantec Corporation

Valid from:
2/15/2015 7:00:00 PM

Valid to:
2/16/2016 6:59:59 PM

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:
3784E4CAC60231ED82FD7E8E845E8CE3

File PE Metadata
Compilation timestamp:
4/10/2015 10:45:05 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
24576:ytuoz7eimFoOwbZ2H18YPmkNNxt2ferKXT5VTJoyCj+:R8vO+Z018hkNHttKtVTJBCj+

Entry address:
0x126A

Entry point:
55, 8B, EC, 83, EC, 10, 53, 56, 57, 6A, 00, FF, 15, 08, 10, 49, 00, 8B, F8, 33, D2, 8B, CF, 8B, 5F, 3C, 03, DF, 2B, 05, 1C, 10, 40, 00, 89, 45, F4, 1B, D2, F7, D8, 89, 55, F8, 0F, B7, 73, 14, 83, D2, 00, F7, DA, 89, 75, F0, 52, 8B, 93, A0, 00, 00, 00, 50, 8B, 44, 1E, 24, 03, 05, 28, 10, 40, 00, 50, FF, B3, A4, 00, 00, 00, E8, 88, FD, FF, FF, 8B, 54, 1E, 28, 83, C4, 10, A1, 28, 10, 40, 00, 2B, D0, 83, FA, 01, 76, 0D, 8B, 4C, 1E, 24, 03, C8, 03, CF, E8, F2, FE, FF, FF, A1, 20, 10, 40, 00, 83, C6, 40, 03, F3...
 
[+]

Entropy:
7.0430

Developed / compiled with:
Microsoft Visual C++

Code size:
574.5 KB (588,288 bytes)

The file Firefox_Setup_26.0.exe has been seen being distributed by the following URL.

http://download.down1oad.org/v2/click/80af325a/?d=http://down1oad.org/.../firefox.exe&n=Mozilla FireFox&key=729765e03ba2c23c34440dbd48ea3966bbec19f3bd3fde15025c3b71e09b6e18&affiliate_image=&product_image=http://down1oad.org/.../firefox.png&sid=firefox&filename=Firefox_Setup_26.0

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