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firefox_download.exe

Download-Manager

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:
Download-Manager

Version:
3.0.0.154

MD5:
89519c8a74e103a66e01199ef9ee8405

SHA-1:
185dec81ee676a677a1c39b9858f79bec7fee0ac

SHA-256:
7ba7563855a4e5f36d62fc1c61e18c462d519952fbd8c388eb61f8814bc3c4ab

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:
11/24/2024 8:03:17 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software (M)
16.7.17.13

File size:
1.1 MB (1,137,080 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\inetcache\ie\{random}\firefox_download.exe

Digital Signature
Signed by:
Download Assistant

Authority:
Symantec Corporation

Valid from:
3/12/2016 1:00:00 AM

Valid to:
6/12/2017 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:
23AA899B39C242619F149EA85DC2BF47

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:+xGHHDJdn+cb/H4QaSvUJYwZIvsvSSnMFGVDL+VrBEJak5y:DD9b/HbaSvBwZxvuW0rBEJak5y

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://dateien.jetzt-herunterladen.co/1458668571LENiIz0oIytiQElCJCUhRENiWSRXKl9fO1BEa1BDcFBDcCUuWCMkP2YpJV9BX1gqJVwuP18lXD0hJCU/ZiM6LVBDcF4oPSV8UENwXihcJV46PmUoP3xfIT09ZSQlZiU JVIrJSBXQ0hJI15LQ15LJSMjR0dHSiMkRkglSCRAQiRGIUZHQiMkSCVFRCVERyFIRSEkRSRKXkhKSUokI0lLI0NKRUBeRVJ8KCRXenptQktSLigkV3Rydm1zbkZHXkJJRUtKI0klSEJSIV5eKD0oIV8lZSgtISYlV1I7XDokLiNfZSgtISYlVypfXztQRGtQQ3BQQ3A8PDxmKSVfQV9YKiVcLj9fJVw9ISQlP2YjOi1QQ3AmXCE7KigjfFBDcDtcOiQuI19lKC0hJiVlJiU/JVwoI2Y7PyZSP1duOjw/PTohJFh3IT8hJiVcUl4oPSU/IS0lV14oXCVeOj5lJDo8Pz06ISRSJDo/JWUuXD1XKl9fO1BEa1BDcFBDcCklX0FfWColXC4/XyVcPSEkJT9mIzotUENwJDo8Pz06ISRlIzotOz0lXyVQQ3BSIyE/.../PTohJGUjOi07PSVfJVBDcFBEcCVcXDpcUERuQg==

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