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firefoxsetup.exe

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 firefoxsetup.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. 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.
Publisher:
Download Assistant  (signed and verified)

Product:
Firefox

Version:
3.0.0.125

MD5:
a30130b42de3e01c43a0871efc50fe8e

SHA-1:
3a88db07ea0cf38d6f9f4bcb09c4dcdc09d11475

SHA-256:
234cf1eeb41431271c9bde70e114b6323f6dc5675f7e1098838fda6dbff9e77e

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 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:
11/15/2024 7:20:50 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.DownloadAssistant.Bundler (M)
16.1.14.12

File size:
1.1 MB (1,129,176 bytes)

Product version:
3.0.0.125

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\inetcache\ie\{random}\firefoxsetup.exe

Digital Signature
Signed by:
Download Assistant

Authority:
Symantec Corporation

Valid from:
6/20/2015 5:00:00 PM

Valid to:
6/20/2016 4:59:59 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:
68A4319BC2FC7C8CEA600E8D68FFA326

File PE Metadata
Compilation timestamp:
1/30/2013 7:21:56 AM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:4xGEkEs6cjLoVqxoKBqB4j6i45S1cwNVD1W+9ev/AnzvF:9R6cvocGiW4jKpwc++YzvF

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:
6.9536

Developed / compiled with:
Microsoft Visual C++

Code size:
65.5 KB (67,072 bytes)

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

http://b.software-downloads1.com/v2/click/pn8b7cor/?d=http://software.every-download.com/firefox.exe&sid=Firefox-US&uid=5180493&key=a6e980db561447a379687464a4f32eb949f3b577927cffaf4a6dbd3016446a2e&affiliate_image=&product_image=https://s3.amazonaws.com/evdlimages/.../firefox-product.jpg&n=Firefox&filename=FirefoxSetup

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