firefox_setup.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.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:
Mozilla Firefox

Version:
3.0.0.105

MD5:
e8ee6141a33b70503df54930fdbcf4c8

SHA-1:
92945c5a58879c7c9c1d2532fd4bf494191acd36

SHA-256:
9c3254ff1ad10f08b0b653f9a17cc2e8ece56172060a9feb1acada3ed988035c

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:
12/26/2024 12:03:42 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.Download.Bundler (M)
16.5.17.8

File size:
960.5 KB (983,544 bytes)

Product version:
3.0.0.105

Copyright:
(c) Download Assistant

Original file name:
firefox_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.exe

Digital Signature
Authority:
Symantec Corporation

Valid from:
6/20/2015 8:00:00 PM

Valid to:
6/20/2016 7:59:59 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:
7/6/2015 5:26:04 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:Tz/x6TtpHE3v0Nh8OZRXDQgB5Z0bSIkqBWUo/RuOpUPJqTJS09fLiuahyp4AZ2FQ:nMTj7h8OigLmLkugpyEdSeTiua0sTq+U

Entry address:
0x1288

Entry point:
55, 8B, EC, 83, EC, 14, 53, 56, 57, 6A, 00, FF, 15, 08, 10, 49, 00, 8B, F8, 33, D2, 8B, CF, 8B, 5F, 3C, 03, DF, 89, 5D, FC, 0F, B7, 73, 14, 83, C6, 18, 03, F3, 2B, 05, 1C, 10, 40, 00, 89, 45, F0, 1B, D2, 89, 75, EC, F7, D8, 89, 55, F4, 83, D2, 00, F7, DA, 52, 8B, 93, A0, 00, 00, 00, 50, 8B, 46, 0C, 03, 05, 28, 10, 40, 00, 50, FF, B3, A4, 00, 00, 00, E8, C6, FD, FF, FF, 56, FF, 35, 28, 10, 40, 00, 8B, CF, E8, 42, FF, FF, FF, A1, 20, 10, 40, 00, 83, C4, 18, 83, C6, 28, 83, F8, 01, 76, 18, 56, FF, 35, 2C, 10...
 
[+]

Entropy:
7.0508

Developed / compiled with:
Microsoft Visual C++

Code size:
574.5 KB (588,288 bytes)

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

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