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firefox_setup_stub.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 firefox_setup_stub.exe, “Firefox ” 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 by Download Assistant)

Product:
Firefox

Description:
Firefox

Version:
3.0.0.35

MD5:
c2c9535977198d7b45c557815352394d

SHA-1:
8aa1461eeadcacc9f1c1b3af649fbcef625850f0

SHA-256:
0d5af8a6d1321cd05ef01505211b01caa69272141569a5bc3afb414c276da40a

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 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
12/24/2024 11:47:26 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software (M)
16.7.29.6

File size:
904.3 KB (926,048 bytes)

Product version:
3.0.0.35

Copyright:
(c) Download Assistant

Original file name:
setup.exe

File type:
Executable application (Win32 EXE)

Bundler/Installer:
AirInstaller Download Manager

Language:
English (United States)

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

Digital Signature
Signed by:
Download Assistant

Authority:
VeriSign, Inc.

Valid from:
8/12/2014 8:00:00 PM

Valid to:
8/12/2016 7:59:59 PM

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

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
6BC405E8AC962C676F54816BCC4D4311

File PE Metadata
Compilation timestamp:
10/23/2014 5:14:24 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:PVSEb1IFgnVTSRuz2kSOZc8Fx+jRjKaKoXYGHtLwGL6ZIS6rYrkjnXy2euVf9Xm5:PDfnVTSgDxFx+jR9/hrsIXrtxfBPQ

Entry address:
0x4ABBF

Entry point:
E8, 6E, 07, 01, 00, E9, 89, FE, FF, FF, CC, CC, CC, CC, CC, CC, CC, 8B, 54, 24, 0C, 8B, 4C, 24, 04, 85, D2, 74, 69, 33, C0, 8A, 44, 24, 08, 84, C0, 75, 16, 81, FA, 80, 00, 00, 00, 72, 0E, 83, 3D, 40, 09, 4A, 00, 00, 74, 05, E9, D1, 07, 01, 00, 57, 8B, F9, 83, FA, 04, 72, 31, F7, D9, 83, E1, 03, 74, 0C, 2B, D1, 88, 07, 83, C7, 01, 83, E9, 01, 75, F6, 8B, C8, C1, E0, 08, 03, C1, 8B, C8, C1, E0, 10, 03, C1, 8B, CA, 83, E2, 03, C1, E9, 02, 74, 06, F3, AB, 85, D2, 74, 0A, 88, 07, 83, C7, 01, 83, EA, 01, 75, F6...
 
[+]

Entropy:
7.2084

Code size:
455.5 KB (466,432 bytes)

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

http://dl.downloadwizard.com/v2/click/eae09561/?d=https://download-installer.cdn.mozilla.net/pub/firefox/releases/32.0.2/win32/en-US/Firefox Setup Stub 32.0.2.exe&key=92c04858a31bc07f69f8368277aaa127844017988e93adeb3f039b91087e1a5b&sid=firefox-us&uid=&affiliate_image=&product_image=http://www.downloadwizard.com/.../logo_firefox_live.jpg&n=Firefox&filename=Firefox_Setup_Stub

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