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firefox_download.exe

Firefox Downloader

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_download.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 Downloader

Version:
3.0.0.154

MD5:
695416d990800e18fb640ef8e3288d76

SHA-1:
249e64f70c4c15619436560377375d0ef37a1058

SHA-256:
7abbf988ae45cefa45d2d2884a6bf8852351c6fbd3a188f67f7a2c1862006727

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:
11/28/2024 12:26:09 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.Download.Bundler (M)
16.4.22.0

File size:
1.1 MB (1,139,328 bytes)

Product version:
3.0.0.154

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_download.exe

Digital Signature
Signed by:
Download Assistant

Authority:
Symantec Corporation

Valid from:
3/23/2016 1:00:00 AM

Valid to:
6/23/2017 1:59:59 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:
148B902A7D1B3F28E1F8304459D901C7

File PE Metadata
Compilation timestamp:
1/30/2013 3:21:56 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:/xGfpOFK9FjVdXOWjXXWuiMv3zz8RuxPNQZq9eVNtEJak6:IRdTVdF3zGubQZK+tEJak6

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...
 
[+]

Developed / compiled with:
Microsoft Visual C++

Code size:
65.5 KB (67,072 bytes)

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

http://files.free-browsers.co/1459946255PkVkJT8rJS1kXkxNJiVGI0RkYV5ZKSwsXFJGbVJFclJFcl4vIDs/LyNeaCpfJiZaJF8vIC4mX2glL1JFciorXyYqL0FSRXIqK18mKi9BZys7LiwjPz9nJjtnPC5oJkEmVC0mQllNKiRJSCRGTCRHXk1MSUhNXktIRCpHRUVNSUUqJkhFRkcmSSVES15IJSNISSZKJEomR0lJRUsjS0gjJEhFJUdLVC4rXllydTRxcjEwZ0VNREhUPCteWURtem14ITZ1bzVISk1ITUZNJCQqRipNVCMqKis/KyMsJmcrOiMoJllUXF8vXjwlLGcrOiMoJllUO1lyK18mKi9BWHAvIDs/.../JjsjOiZZKitfJiovQWdeLyA7Py8jXg==

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